http://emdrive.echothis.com/api.php?action=feedcontributions&feedformat=atom&user=TheTraveller 2026-09-10T13:51:11Z User contributions MediaWiki 1.41.1 http://emdrive.echothis.com/index.php?title=Potential_EMDrive_solar_system_explorer_ship&diff=1143 2015-07-27T02:24:02Z

<p>TheTraveller: </p> <hr /> <div>Mark Rademaker, working with Dr. White of NASA Eagleworks has created a vision of a EMDrive powered solar system explorer ship.<br /> <br /> [https://m.flickr.com/#/photos/yard2380 IXS Clark]<br /> <br /> [[File:IXSClark2.jpg]]<br /> <br /> The name is Clarke. Sir Arthur C. Clarke. (deltaMass)<br /> <br /> 10 of 20 EMDrive pods<br /> <br /> [[File:EMDrivePodsx10.jpg]]<br /> <br /> Based on Dr. Whites other data, IXS Clark data is:<br /> <br /> 1) 90t or 90,000kgs<br /> <br /> 2) 2MWe nuclear generator in the aft section of the ship. That is a max electricity availability of 2MWh of electricity every hour or 2,000kWh per hour.<br /> <br /> 3) 20 EMDrive propellantless force generators rated at 4N of force generation per kW of applied microwave power. (4N/kW) Each of the 20 EMDrives (100kW energy usage each) will probably be driven by its own dual redundant 2 x 100kW microwave Rf generators.<br /> <br /> 4) Total force generation of 8,000N being 2,000 kW of power at 4N per kW. 2,000kW * 4N/kW = 8,000 Newtons of force to drive the 90t ship. 8,000N is approx 816kg of force.<br /> <br /> 5) Continual acceleration will then be A = F/M or 0.088m/s^2 = 8,000N/90,000kgs<br /> <br /> 6) The IXS Clark's 90t breaks down as follows: 50t cargo, 20t EMDrives and support systems (microwave generators, cooling, etc), 20t nuclear generator.<br /> <br /> Which means that as long as the nuclear generator on the IXS Clark can generate 2,000kW of electricity, the ship will continue to accelerate at 9.1milli-g<br /> <br /> <br /> == CofE velocity violation Paradox ==<br /> <br /> Dr White has discussed the CofE Paradox in (Appendix A):<br /> <br /> [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140013174.pdf Human Outer Solar System Exploration via Q-Thruster Technology] <br /> <br /> <br /> deltaMass and Todd &quot;WarpTech&quot; have shown in NSF EM Drive Thread 2 that Dr. White's derivation contains an error in the integration. frobnicat has discussed in NSF EM Drive Threads 1 and 2 other flaws in this analysis. For the ion rocket consideration, the kinetic energy of the propellant needs to be properly taken into account.<br /> <br /> == These are the potential voyages of the IXS Clark ==<br /> <br /> Please use the right hand 4N/kW transit examples.<br /> <br /> '''Mars'''<br /> <br /> [[File:ISXClarkMars.jpg]]<br /> <br /> <br /> <br /> '''Jupiter'''<br /> <br /> [[File:IXSClarkJupiter.jpg]]<br /> <br /> <br /> <br /> '''Saturn'''<br /> <br /> [[File:IXSClarkSaturn.jpg]]<br /> <br /> <br /> <br /> '''Titan/Enceladus'''<br /> <br /> Note based on 0.4N/kW and not 4N/kW<br /> 0.91milli-g acceleration and not 9.1milli-g acceleration<br /> <br /> [[File:IXSClarkTitanEnceladusMissìon.png]]<br /> <br /> <br /> <br /> '''Uranus'''<br /> <br /> [[File:IXSClarkUranus.jpg]]<br /> <br /> <br /> <br /> <br /> <br /> '''Neptune'''<br /> <br /> [[File:IXSClarkNeptune.jpg]]<br /> <br /> <br /> <br /> '''Pluto'''<br /> <br /> [[File:IXSClarkPluto.jpg]]<br /> <br /> <br /> <br /> '''1,000 AU Deep Space'''<br /> <br /> [[File:IXSClark1000AUDeepSpace.jpg]]<br /> <br /> <br /> <br /> '''Proxima Centauri'''<br /> <br /> [[File:IXSClarkProximaCentauri.jpg]]<br /> <br /> <br /> '''Someone responds:'''<br /> <br /> A lot more effort and reputation of advanced concepts research could be wasted on illusory claims. There is ongoing outright intellectual dishonesty with the proponents insisting on selling an effect enabling extravagant deep space deltaVs at clearly overunity discount energetic costs and insisting on non overunity of the effect.<br /> <br /> Going straight trajectory for simplicity : 0.0023g (2.25e-2 m/s²) for 6.2 month (1.6e7 s) is a deltaV (at half travel) of 360 km/s.<br /> 2MW generator power for 6.2 month : cost = 3.2e13 J (32 terajoules)<br /> 90 t at 360km/s, .5*m*v² : benefit = 5.8e15 J (5800 terajoules)<br /> <br /> 180 times more kinetic energy out than energy that was put in. <br /> <br /> This is not something we could do even if solar system were paved from Sun to Pluto and we had tyres to pull on that ground at 100% efficiency. So this extravagant claim of Pluto at 12.4 month is not dependant on cheap momentum, it is entirely, utterly, irremediably dependant on cheap energy. <br /> <br /> This is something we could do if solar system were crossed by a conveyor belt that happen to move from sun outward to Pluto at above 360km/s and our ship could drag on that flow. Solar wind fits the bill, but it is not of high enough density (and clearly can't explain results down in earth labs). If EM drive is possible and enables such deep space transit times, then the problem is not that it respects CoE or not, the problem is how it could respect CoE when we see the required energy leverage ratio : this makes it closer to sailing than driving. And no proponent claiming both those transit times (implicitly overunity energy) and respect of CoE have ever cared to publish the slightest remark or experimental sidereal time check about a possible preferred frame to sail on (heliocentric ? galactocentric ? CMBcentric ?). They clearly don't believe in such possibility despite being the only way to reconcile both short transit times and serious CoE (short of plain ZPF energy extraction).<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> The image I posted was from the 188 run of the SPR Demonstrator rotary test. Same test run as the video.<br /> <br /> What I read from that rotary test experimental data is there is no overunity as magnetron Power is dropping as Velocity is increasing. Shawyer has explained this happens because acceleration shifts the cavity resonant frequency, Q drops from some of the EM wave cavity energy being converted into kinetic, increasing cavity losses, Force generated drops, stopping overunity operation.<br /> <br /> Shawyer has been saying this for years and in the graphic we can see it actually happening.<br /> <br /> Sorry but there is no overunity as multiple acceleration related effects inside the cavity stop OU happening.&gt;&gt;<br /> <br /> <br /> '''Someone responds:'''<br /> <br /> So why in hell are you never ever applying those purported OU limiting effect with mission profiles ? How can you decently say &quot;1N/kW =&gt; Pluto in a year&quot; in a post and &quot;there is no overunity as magnetron Power is dropping as Velocity is increasing&quot; the following post ? Please apply those purported OU protecting effect in the sold mission profiles. Otherwise it's like saying that your Unicorn can find shortcuts through fairyland in one post, and saying that of course fairies don't exist the next one. Hope you understand why this feels dishonest, and why a number of contributors will always strongly object as long as such canards are sold as perfectly all right.<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> The transit time examples above are not mine. They were calculated by Dr. White, the head of NASA Eagleworks. If you have an issue with them I suggest you take it up with Dr. White.<br /> <br /> I now believe, having worked through solenoid magnetic coil examples, some of the initial, before acceleration, cavity energy is used to supply the initial energy used to start the acceleration. As that energy drain lowers the cavity Q, it also alters the cavity impedance and affects the power drawn at the start. What I suspect is that sometime later a equilibrium condition will be reached, when there is no more excess, to the lower Q cavity, energy to be used to support acceleration. Then the power consumed will increase and reach a steady state, matching cavity surface losses and cavity kinetic conversion losses versus cavity input energy and Rf generator consumed energy.<br /> <br /> Then I expect to see steady state acceleration following A = F/M and constant power supply energy consumption.<br /> <br /> So don't panic just yet. We only have data for the 1st few pages of a much longer 1st chapter.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Potential_EMDrive_solar_system_explorer_ship&diff=1142 2015-07-27T02:20:50Z

<p>TheTraveller: </p> <hr /> <div>Mark Rademaker, working with Dr. White of NASA Eagleworks has created a vision of a EMDrive powered solar system explorer ship.<br /> <br /> [https://m.flickr.com/#/photos/yard2380 IXS Clark]<br /> <br /> [[File:IXSClark2.jpg]]<br /> <br /> The name is Clarke. Sir Arthur C. Clarke. (deltaMass)<br /> <br /> 10 of 20 EMDrive pods<br /> <br /> [[File:EMDrivePodsx10.jpg]]<br /> <br /> Based on Dr. Whites other data, IXS Clark data is:<br /> <br /> 1) 90t or 90,000kgs<br /> <br /> 2) 2MWe nuclear generator in the aft section of the ship. That is a max electricity availability of 2MWh of electricity every hour or 2,000kWh per hour.<br /> <br /> 3) 20 EMDrive propellantless force generators rated at 4N of force generation per kW of applied microwave power. (4N/kW) Each of the 20 EMDrives (100kW energy usage each) will probably be driven by its own dual redundant 2 x 100kW microwave Rf generators.<br /> <br /> 4) Total force generation of 8,000N being 2,000 kW of power at 4N per kW. 2,000kW * 4N/kW = 8,000 Newtons of force to drive the 90t ship. 8,000N is approx 816kg of force.<br /> <br /> 5) Continual acceleration will then be A = F/M or 0.088m/s^2 = 8,000N/90,000kgs<br /> <br /> 6) The IXS Clark's 90t breaks down as follows: 50t cargo, 20t EMDrives and support systems (microwave generators, cooling, etc), 20t nuclear generator.<br /> <br /> Which means that as long as the nuclear generator on the IXS Clark can generate 2,000kW of electricity, the ship will continue to accelerate at 9.1milli-g<br /> <br /> <br /> == CofE velocity violation Paradox ==<br /> <br /> Dr White has discussed the CofE Paradox in (Appendix A):<br /> <br /> [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140013174.pdf Human Outer Solar System Exploration via Q-Thruster Technology] <br /> <br /> <br /> deltaMass and Todd &quot;WarpTech&quot; have shown in NSF EM Drive Thread 2 that Dr. White's derivation contains an error in the integration. frobnicat has discussed in NSF EM Drive Threads 1 and 2 other flaws in this analysis. For the ion rocket consideration, the kinetic energy of the propellant needs to be properly taken into account.<br /> <br /> == These are the potential voyages of the IXS Clark ==<br /> <br /> Please use the right hand 4N/kW transit examples.<br /> <br /> '''Mars'''<br /> <br /> [[File:ISXClarkMars.jpg]]<br /> <br /> <br /> <br /> '''Jupiter'''<br /> <br /> [[File:IXSClarkJupiter.jpg]]<br /> <br /> <br /> <br /> '''Saturn'''<br /> <br /> [[File:IXSClarkSaturn.jpg]]<br /> <br /> <br /> <br /> '''Titan/Enceladus'''<br /> <br /> Note based on 0.4N/kW and not 4N/kW<br /> 0.91milli-g acceleration and not 9.1milli-g acceleration<br /> <br /> [[File:IXSClarkTitanEnceladusMissìon.png]]<br /> <br /> <br /> <br /> '''Uranus'''<br /> <br /> [[File:IXSClarkUranus.jpg]]<br /> <br /> <br /> <br /> <br /> <br /> '''Neptune'''<br /> <br /> [[File:IXSClarkNeptune.jpg]]<br /> <br /> <br /> <br /> '''Pluto'''<br /> <br /> [[File:IXSClarkPluto.jpg]]<br /> <br /> <br /> <br /> '''1,000 AU Deep Space'''<br /> <br /> [[File:IXSClark1000AUDeepSpace.jpg]]<br /> <br /> <br /> <br /> '''Proxima Centauri'''<br /> <br /> [[File:IXSClarkProximaCentauri.jpg]]<br /> <br /> <br /> '''Someone responds:'''<br /> <br /> A lot more effort and reputation of advanced concepts research could be wasted on illusory claims. There is ongoing outright intellectual dishonesty with the proponents insisting on selling an effect enabling extravagant deep space deltaVs at clearly overunity discount energetic costs and insisting on non overunity of the effect.<br /> <br /> Going straight trajectory for simplicity : 0.0023g (2.25e-2 m/s²) for 6.2 month (1.6e7 s) is a deltaV (at half travel) of 360 km/s.<br /> 2MW generator power for 6.2 month : cost = 3.2e13 J (32 terajoules)<br /> 90 t at 360km/s, .5*m*v² : benefit = 5.8e15 J (5800 terajoules)<br /> <br /> 180 times more kinetic energy out than energy that was put in. <br /> <br /> This is not something we could do even if solar system were paved from Sun to Pluto and we had tyres to pull on that ground at 100% efficiency. So this extravagant claim of Pluto at 12.4 month is not dependant on cheap momentum, it is entirely, utterly, irremediably dependant on cheap energy. <br /> <br /> This is something we could do if solar system were crossed by a conveyor belt that happen to move from sun outward to Pluto at above 360km/s and our ship could drag on that flow. Solar wind fits the bill, but it is not of high enough density (and clearly can't explain results down in earth labs). If EM drive is possible and enables such deep space transit times, then the problem is not that it respects CoE or not, the problem is how it could respect CoE when we see the required energy leverage ratio : this makes it closer to sailing than driving. And no proponent claiming both those transit times (implicitly overunity energy) and respect of CoE have ever cared to publish the slightest remark or experimental sidereal time check about a possible preferred frame to sail on (heliocentric ? galactocentric ? CMBcentric ?). They clearly don't believe in such possibility despite being the only way to reconcile both short transit times and serious CoE (short of plain ZPF energy extraction).<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> The image I posted was from the 188 run of the SPR Demonstrator rotary test. Same test run as the video.<br /> <br /> What I read from that rotary test experimental data is there is no overunity as magnetron Power is dropping as Velocity is increasing. Shawyer has explained this happens because acceleration shifts the cavity resonant frequency, Q drops from some of the EM wave cavity energy being converted into kinetic, increasing cavity losses, Force generated drops, stopping overunity operation.<br /> <br /> Shawyer has been saying this for years and in the graphic we can see it actually happening.<br /> <br /> Sorry but there is no overunity as multiple acceleration related effects inside the cavity stop OU happening.&gt;&gt;<br /> <br /> <br /> '''Someone responds:'''<br /> <br /> So why in hell are you never ever applying those purported OU limiting effect with mission profiles ? How can you decently say &quot;1N/kW =&gt; Pluto in a year&quot; in a post and &quot;there is no overunity as magnetron Power is dropping as Velocity is increasing&quot; the following post ? Please apply those purported OU protecting effect in the sold mission profiles. Otherwise it's like saying that your Unicorn can find shortcuts through fairyland in one post, and saying that of course fairies don't exist the next one. Hope you understand why this feels dishonest, and why a number of contributors will always strongly object as long as such canards are sold as perfectly all right.<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> I now believe, having worked through solenoid magnetic coil examples, some of the initial, before acceleration, cavity energy is used to supply the initial energy used to start the acceleration. As that energy drain lowers the cavity Q, it also alters the cavity impedance and affects the power drawn at the start. What I suspect is that sometime later a equilibrium condition will be reached, when there is no more excess, to the lower Q cavity, energy to be used to support acceleration. Then the power consumed will increase and reach a steady state, matching cavity surface losses and cavity kinetic conversion losses versus cavity input energy and Rf generator consumed energy.<br /> <br /> Then I expect to see steady state acceleration following A = F/M and constant power supply energy consumption.<br /> <br /> So don't panic just yet. We only have data for the 1st few pages of a much longer 1st chapter.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Potential_EMDrive_solar_system_explorer_ship&diff=1141 2015-07-27T02:20:00Z

<p>TheTraveller: </p> <hr /> <div>Mark Rademaker, working with Dr. White of NASA Eagleworks has created a vision of a EMDrive powered solar system explorer ship.<br /> <br /> [https://m.flickr.com/#/photos/yard2380 IXS Clark]<br /> <br /> [[File:IXSClark2.jpg]]<br /> <br /> The name is Clarke. Sir Arthur C. Clarke. (deltaMass)<br /> <br /> 10 of 20 EMDrive pods<br /> <br /> [[File:EMDrivePodsx10.jpg]]<br /> <br /> Based on Dr. Whites other data, IXS Clark data is:<br /> <br /> 1) 90t or 90,000kgs<br /> <br /> 2) 2MWe nuclear generator in the aft section of the ship. That is a max electricity availability of 2MWh of electricity every hour or 2,000kWh per hour.<br /> <br /> 3) 20 EMDrive propellantless force generators rated at 4N of force generation per kW of applied microwave power. (4N/kW) Each of the 20 EMDrives (100kW energy usage each) will probably be driven by its own dual redundant 2 x 100kW microwave Rf generators.<br /> <br /> 4) Total force generation of 8,000N being 2,000 kW of power at 4N per kW. 2,000kW * 4N/kW = 8,000 Newtons of force to drive the 90t ship. 8,000N is approx 816kg of force.<br /> <br /> 5) Continual acceleration will then be A = F/M or 0.088m/s^2 = 8,000N/90,000kgs<br /> <br /> 6) The IXS Clark's 90t breaks down as follows: 50t cargo, 20t EMDrives and support systems (microwave generators, cooling, etc), 20t nuclear generator.<br /> <br /> Which means that as long as the nuclear generator on the IXS Clark can generate 2,000kW of electricity, the ship will continue to accelerate at 9.1milli-g<br /> <br /> <br /> == CofE velocity violation Paradox ==<br /> <br /> Dr White has discussed the CofE Paradox in (Appendix A):<br /> <br /> [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140013174.pdf Human Outer Solar System Exploration via Q-Thruster Technology] <br /> <br /> <br /> deltaMass and Todd &quot;WarpTech&quot; have shown in NSF EM Drive Thread 2 that Dr. White's derivation contains an error in the integration. frobnicat has discussed in NSF EM Drive Threads 1 and 2 other flaws in this analysis. For the ion rocket consideration, the kinetic energy of the propellant needs to be properly taken into account.<br /> <br /> == These are the potential voyages of the IXS Clark ==<br /> <br /> Please use the right hand 4N/kW transit examples.<br /> <br /> '''Mars'''<br /> <br /> [[File:ISXClarkMars.jpg]]<br /> <br /> <br /> <br /> '''Jupiter'''<br /> <br /> [[File:IXSClarkJupiter.jpg]]<br /> <br /> <br /> <br /> '''Saturn'''<br /> <br /> [[File:IXSClarkSaturn.jpg]]<br /> <br /> <br /> <br /> '''Titan/Enceladus'''<br /> <br /> Note based on 0.4N/kW and not 4N/kW<br /> 0.91milli-g acceleration and not 9.1milli-g acceleration<br /> <br /> [[File:IXSClarkTitanEnceladusMissìon.png]]<br /> <br /> <br /> <br /> '''Uranus'''<br /> <br /> [[File:IXSClarkUranus.jpg]]<br /> <br /> <br /> <br /> <br /> <br /> '''Neptune'''<br /> <br /> [[File:IXSClarkNeptune.jpg]]<br /> <br /> <br /> <br /> '''Pluto'''<br /> <br /> [[File:IXSClarkPluto.jpg]]<br /> <br /> <br /> <br /> '''1,000 AU Deep Space'''<br /> <br /> [[File:IXSClark1000AUDeepSpace.jpg]]<br /> <br /> <br /> <br /> '''Proxima Centauri'''<br /> <br /> [[File:IXSClarkProximaCentauri.jpg]]<br /> <br /> <br /> '''Some unnamed person responds:'''<br /> <br /> A lot more effort and reputation of advanced concepts research could be wasted on illusory claims. There is ongoing outright intellectual dishonesty with the proponents insisting on selling an effect enabling extravagant deep space deltaVs at clearly overunity discount energetic costs and insisting on non overunity of the effect.<br /> <br /> Going straight trajectory for simplicity : 0.0023g (2.25e-2 m/s²) for 6.2 month (1.6e7 s) is a deltaV (at half travel) of 360 km/s.<br /> 2MW generator power for 6.2 month : cost = 3.2e13 J (32 terajoules)<br /> 90 t at 360km/s, .5*m*v² : benefit = 5.8e15 J (5800 terajoules)<br /> <br /> 180 times more kinetic energy out than energy that was put in. <br /> <br /> This is not something we could do even if solar system were paved from Sun to Pluto and we had tyres to pull on that ground at 100% efficiency. So this extravagant claim of Pluto at 12.4 month is not dependant on cheap momentum, it is entirely, utterly, irremediably dependant on cheap energy. <br /> <br /> This is something we could do if solar system were crossed by a conveyor belt that happen to move from sun outward to Pluto at above 360km/s and our ship could drag on that flow. Solar wind fits the bill, but it is not of high enough density (and clearly can't explain results down in earth labs). If EM drive is possible and enables such deep space transit times, then the problem is not that it respects CoE or not, the problem is how it could respect CoE when we see the required energy leverage ratio : this makes it closer to sailing than driving. And no proponent claiming both those transit times (implicitly overunity energy) and respect of CoE have ever cared to publish the slightest remark or experimental sidereal time check about a possible preferred frame to sail on (heliocentric ? galactocentric ? CMBcentric ?). They clearly don't believe in such possibility despite being the only way to reconcile both short transit times and serious CoE (short of plain ZPF energy extraction).<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> The image I posted was from the 188 run of the SPR Demonstrator rotary test. Same test run as the video.<br /> <br /> What I read from that rotary test experimental data is there is no overunity as magnetron Power is dropping as Velocity is increasing. Shawyer has explained this happens because acceleration shifts the cavity resonant frequency, Q drops from some of the EM wave cavity energy being converted into kinetic, increasing cavity losses, Force generated drops, stopping overunity operation.<br /> <br /> Shawyer has been saying this for years and in the graphic we can see it actually happening.<br /> <br /> Sorry but there is no overunity as multiple acceleration related effects inside the cavity stop OU happening.&gt;&gt;<br /> <br /> <br /> '''Some unnamed person responds:'''<br /> <br /> So why in hell are you never ever applying those purported OU limiting effect with mission profiles ? How can you decently say &quot;1N/kW =&gt; Pluto in a year&quot; in a post and &quot;there is no overunity as magnetron Power is dropping as Velocity is increasing&quot; the following post ? Please apply those purported OU protecting effect in the sold mission profiles. Otherwise it's like saying that your Unicorn can find shortcuts through fairyland in one post, and saying that of course fairies don't exist the next one. Hope you understand why this feels dishonest, and why a number of contributors will always strongly object as long as such canards are sold as perfectly all right.<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> I now believe, having worked through solenoid magnetic coil examples, some of the initial, before acceleration, cavity energy is used to supply the initial energy used to start the acceleration. As that energy drain lowers the cavity Q, it also alters the cavity impedance and affects the power drawn at the start. What I suspect is that sometime later a equilibrium condition will be reached, when there is no more excess, to the lower Q cavity, energy to be used to support acceleration. Then the power consumed will increase and reach a steady state, matching cavity surface losses and cavity kinetic conversion losses versus cavity input energy and Rf generator consumed energy.<br /> <br /> Then I expect to see steady state acceleration following A = F/M and constant power supply energy consumption.<br /> <br /> So don't panic just yet. We only have data for the 1st few pages of a much longer 1st chapter.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Potential_EMDrive_solar_system_explorer_ship&diff=1140 2015-07-27T02:17:45Z

<p>TheTraveller: </p> <hr /> <div>Mark Rademaker, working with Dr. White of NASA Eagleworks has created a vision of a EMDrive powered solar system explorer ship.<br /> <br /> [https://m.flickr.com/#/photos/yard2380 IXS Clark]<br /> <br /> [[File:IXSClark2.jpg]]<br /> <br /> The name is Clarke. Sir Arthur C. Clarke. (deltaMass)<br /> <br /> 10 of 20 EMDrive pods<br /> <br /> [[File:EMDrivePodsx10.jpg]]<br /> <br /> Based on Dr. Whites other data, IXS Clark data is:<br /> <br /> 1) 90t or 90,000kgs<br /> <br /> 2) 2MWe nuclear generator in the aft section of the ship. That is a max electricity availability of 2MWh of electricity every hour or 2,000kWh per hour.<br /> <br /> 3) 20 EMDrive propellantless force generators rated at 4N of force generation per kW of applied microwave power. (4N/kW) Each of the 20 EMDrives (100kW energy usage each) will probably be driven by its own dual redundant 2 x 100kW microwave Rf generators.<br /> <br /> 4) Total force generation of 8,000N being 2,000 kW of power at 4N per kW. 2,000kW * 4N/kW = 8,000 Newtons of force to drive the 90t ship. 8,000N is approx 816kg of force.<br /> <br /> 5) Continual acceleration will then be A = F/M or 0.088m/s^2 = 8,000N/90,000kgs<br /> <br /> 6) The IXS Clark's 90t breaks down as follows: 50t cargo, 20t EMDrives and support systems (microwave generators, cooling, etc), 20t nuclear generator.<br /> <br /> Which means that as long as the nuclear generator on the IXS Clark can generate 2,000kW of electricity, the ship will continue to accelerate at 9.1milli-g<br /> <br /> <br /> == CofE velocity violation Paradox ==<br /> <br /> Dr White has discussed the CofE Paradox in (Appendix A):<br /> <br /> [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140013174.pdf Human Outer Solar System Exploration via Q-Thruster Technology] <br /> <br /> <br /> deltaMass and Todd &quot;WarpTech&quot; have shown in NSF EM Drive Thread 2 that Dr. White's derivation contains an error in the integration. frobnicat has discussed in NSF EM Drive Threads 1 and 2 other flaws in this analysis. For the ion rocket consideration, the kinetic energy of the propellant needs to be properly taken into account.<br /> <br /> == These are the potential voyages of the IXS Clark ==<br /> <br /> Please use the right hand 4N/kW transit examples.<br /> <br /> '''Mars'''<br /> <br /> [[File:ISXClarkMars.jpg]]<br /> <br /> <br /> <br /> '''Jupiter'''<br /> <br /> [[File:IXSClarkJupiter.jpg]]<br /> <br /> <br /> <br /> '''Saturn'''<br /> <br /> [[File:IXSClarkSaturn.jpg]]<br /> <br /> <br /> <br /> '''Titan/Enceladus'''<br /> <br /> Note based on 0.4N/kW and not 4N/kW<br /> 0.91milli-g acceleration and not 9.1milli-g acceleration<br /> <br /> [[File:IXSClarkTitanEnceladusMissìon.png]]<br /> <br /> <br /> <br /> '''Uranus'''<br /> <br /> [[File:IXSClarkUranus.jpg]]<br /> <br /> <br /> <br /> <br /> <br /> '''Neptune'''<br /> <br /> [[File:IXSClarkNeptune.jpg]]<br /> <br /> <br /> <br /> '''Pluto'''<br /> <br /> [[File:IXSClarkPluto.jpg]]<br /> <br /> <br /> <br /> '''1,000 AU Deep Space'''<br /> <br /> [[File:IXSClark1000AUDeepSpace.jpg]]<br /> <br /> <br /> <br /> '''Proxima Centauri'''<br /> <br /> [[File:IXSClarkProximaCentauri.jpg]]<br /> <br /> A lot more effort and reputation of advanced concepts research could be wasted on illusory claims. There is ongoing outright intellectual dishonesty with the proponents insisting on selling an effect enabling extravagant deep space deltaVs at clearly overunity discount energetic costs and insisting on non overunity of the effect.<br /> <br /> Going straight trajectory for simplicity : 0.0023g (2.25e-2 m/s²) for 6.2 month (1.6e7 s) is a deltaV (at half travel) of 360 km/s.<br /> 2MW generator power for 6.2 month : cost = 3.2e13 J (32 terajoules)<br /> 90 t at 360km/s, .5*m*v² : benefit = 5.8e15 J (5800 terajoules)<br /> <br /> 180 times more kinetic energy out than energy that was put in. <br /> <br /> This is not something we could do even if solar system were paved from Sun to Pluto and we had tyres to pull on that ground at 100% efficiency. So this extravagant claim of Pluto at 12.4 month is not dependant on cheap momentum, it is entirely, utterly, irremediably dependant on cheap energy. <br /> <br /> This is something we could do if solar system were crossed by a conveyor belt that happen to move from sun outward to Pluto at above 360km/s and our ship could drag on that flow. Solar wind fits the bill, but it is not of high enough density (and clearly can't explain results down in earth labs). If EM drive is possible and enables such deep space transit times, then the problem is not that it respects CoE or not, the problem is how it could respect CoE when we see the required energy leverage ratio : this makes it closer to sailing than driving. And no proponent claiming both those transit times (implicitly overunity energy) and respect of CoE have ever cared to publish the slightest remark or experimental sidereal time check about a possible preferred frame to sail on (heliocentric ? galactocentric ? CMBcentric ?). They clearly don't believe in such possibility despite being the only way to reconcile both short transit times and serious CoE (short of plain ZPF energy extraction).<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> The image I posted was from the 188 run of the SPR Demonstrator rotary test. Same test run as the video.<br /> <br /> What I read from that rotary test experimental data is there is no overunity as magnetron Power is dropping as Velocity is increasing. Shawyer has explained this happens because acceleration shifts the cavity resonant frequency, Q drops from some of the EM wave cavity energy being converted into kinetic, increasing cavity losses, Force generated drops, stopping overunity operation.<br /> <br /> Shawyer has been saying this for years and in the graphic we can see it actually happening.<br /> <br /> Sorry but there is no overunity as multiple acceleration related effects inside the cavity stop OU happening.&gt;&gt;<br /> <br /> <br /> So why in hell are you never ever applying those purported OU limiting effect with mission profiles ? How can you decently say &quot;1N/kW =&gt; Pluto in a year&quot; in a post and &quot;there is no overunity as magnetron Power is dropping as Velocity is increasing&quot; the following post ? Please apply those purported OU protecting effect in the sold mission profiles. Otherwise it's like saying that your Unicorn can find shortcuts through fairyland in one post, and saying that of course fairies don't exist the next one. Hope you understand why this feels dishonest, and why a number of contributors will always strongly object as long as such canards are sold as perfectly all right.<br /> <br /> <br /> '''TheTraveller responds:'''<br /> <br /> I now believe, having worked through solenoid magnetic coil examples, some of the initial, before acceleration, cavity energy is used to supply the initial energy used to start the acceleration. As that energy drain lowers the cavity Q, it also alters the cavity impedance and affects the power drawn at the start. What I suspect is that sometime later a equilibrium condition will be reached, when there is no more excess, to the lower Q cavity, energy to be used to support acceleration. Then the power consumed will increase and reach a steady state, matching cavity surface losses and cavity kinetic conversion losses versus cavity input energy and Rf generator consumed energy.<br /> <br /> Then I expect to see steady state acceleration following A = F/M and constant power supply energy consumption.<br /> <br /> So don't panic just yet. We only have data for the 1st few pages of a much longer 1st chapter.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1132 2015-07-24T09:28:35Z

<p>TheTraveller: Undo revision 1131 by TheTraveller (talk)</p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> <br /> :'''Someone unknown posted''': <br /> :deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :'''TheTraveller responds'''<br /> :deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> :[[File:CullenYang.jpg]]<br /> <br /> :'''So we have Cullen (backed by experimental data), Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong and it is related to phase velocity, which in a waveguide is above c and nothing travels above c.'''<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1131 2015-07-24T09:28:06Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> <br /> :'''Someone unknown posted''': <br /> :deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :'''TheTraveller responds'''<br /> :deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> [[File:CullenYang.jpg]]<br /> <br /> :'''So we have Cullen (backed by experimental data), Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong and it is related to phase velocity, which in a waveguide is above c and nothing travels above c.'''<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1130 2015-07-24T09:26:54Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> <br /> :'''Someone unknown posted''': <br /> :deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :'''TheTraveller responds'''<br /> :deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> :[[File:CullenYang.jpg]]<br /> <br /> :'''So we have Cullen (backed by experimental data), Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong and it is related to phase velocity, which in a waveguide is above c and nothing travels above c.'''<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1129 2015-07-24T09:26:03Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> <br /> ::'''Someone unknown posted''': <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> ::'''TheTraveller responds'''<br /> ::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> ::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> ::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> ::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> ::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> ::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> ::The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> ::[[File:CullenYang.jpg]]<br /> <br /> ::'''So we have Cullen (backed by experimental data), Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong and it is related to phase velocity, which in a waveguide is above c and nothing travels above c.'''<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1128 2015-07-24T09:25:04Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> <br /> ::'''Someone unknown posted''': <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds'''<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> :::'''So we have Cullen (backed by experimental data), Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong and it is related to phase velocity, which in a waveguide is above c and nothing travels above c.'''<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1127 2015-07-24T06:18:35Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds'''<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> :::'''So we have Cullen (backed by experimental data), Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong and it is related to phase velocity, which in a waveguide is above c and nothing travels above c.'''<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1126 2015-07-24T06:16:41Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds'''<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> :::'''So we have Cullen (backed by experimental data), Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong.'''<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1125 2015-07-24T06:14:38Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds'''<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation used by Shawyer and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> :::So we have Cullen, Shawyer and NWPU all saying the level of the reflected Force on an endplate, in a waveguide, is related to guide wavelength / group velocity. Yet deltaMass says they are all wrong.<br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1124 2015-07-24T05:50:42Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds'''<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> <br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1123 2015-07-24T05:49:50Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds'''<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> :::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1122 2015-07-24T05:48:12Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds''':<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> :::''Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!''<br /> :::''Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:''<br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1121 2015-07-24T05:45:32Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::'''TheTraveller responds''':<br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1120 2015-07-24T05:44:34Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> :::deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> :::[http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> :::Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> :::[[File:1951_Cullen15.jpg]]<br /> <br /> <br /> :::The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> :::[[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1119 2015-07-24T05:43:43Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> ::deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> <br /> The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> [[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1118 2015-07-24T05:19:15Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by deltaMass.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> <br /> The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> [[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1117 2015-07-24T05:18:19Z

<p>TheTraveller: Undo revision 1116 by TheTraveller (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1116 2015-07-24T05:17:52Z

<p>TheTraveller: </p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[File:EmDrive Basic Theory.ppt]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1115 2015-07-24T05:14:31Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass' assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by mistaken deltaMass.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> <br /> The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> [[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1114 2015-07-24T05:13:16Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity and not the phase velocity as claimed by mistaken deltaMass.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> <br /> The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> [[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1113 2015-07-24T05:12:14Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> <br /> The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> [[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1112 2015-07-24T05:10:42Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> [[File:CullenYang.jpg]]<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=File:CullenYang.jpg&diff=1111 2015-07-24T05:10:11Z

<p>TheTraveller: </p> <hr /> <div></div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1110 2015-07-24T05:09:17Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> The researchers at NWPU also agree with the Cullen 15 equation and use it in their own calculations.<br /> <br /> <br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1109 2015-07-24T05:07:57Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity.<br /> <br /> [[File:1951_Cullen15.jpg]]<br /> <br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=File:1951_Cullen15.jpg&diff=1108 2015-07-24T05:06:10Z

<p>TheTraveller: </p> <hr /> <div></div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1107 2015-07-24T05:05:24Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> Additionally Cullen has shown the reflection force generated on an endplate inside a waveguide is related to the guide wavelength or group velocity.<br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1106 2015-07-24T05:03:18Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> <br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1105 2015-07-24T05:02:48Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1104 2015-07-24T05:02:26Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1103 2015-07-24T05:01:45Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> <br /> deltaMass assumption is just plain wrong as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1102 2015-07-24T05:01:07Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. <br /> deltaMass has shown that Shawyer does not even understand that momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong. <br /> deltaMass assumption is incorrect as inside a waveguide, phase velocity is above c and momentum is governed by the group velocity or the guide waveguide:<br /> [http://www.microwaves101.com/encyclopedias/waveguide-mathematics#velocity Group Velocity Rules Inside a Waveguide]<br /> <br /> The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/EmDrive this subreddit] has active discussion.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1097 2015-07-18T11:58:19Z

<p>TheTraveller: Undo revision 1095 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1094 2015-07-18T08:22:56Z

<p>TheTraveller: Undo revision 1093 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1058 2015-07-16T02:53:18Z

<p>TheTraveller: Undo revision 1056 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1055 2015-07-16T01:28:29Z

<p>TheTraveller: </p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1054 2015-07-16T01:27:27Z

<p>TheTraveller: Undo revision 1053 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1052 2015-07-16T00:52:41Z

<p>TheTraveller: Undo revision 1036 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1051 2015-07-16T00:51:16Z

<p>TheTraveller: Undo revision 1042 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> <br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * Roger Shawyer's EMDrive &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;&lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt; deltaMass has shown that Shawyer is incorrect: momentum is governed by the phase velocity, not the group velocity. Therefore any explanations for thrust (like Shawyer's) which are based on a difference between group velocities, are just plain wrong.<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1034 2015-07-15T04:38:08Z

<p>TheTraveller: Undo revision 1030 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1029 2015-07-14T09:58:27Z

<p>TheTraveller: Undo revision 1007 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> * Roger Shawyer's EMDrive full theory paper &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;<br /> * Roger Shawyer's EMDrive basic theory &lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Prof Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Theory&diff=1028 2015-07-14T09:57:36Z

<p>TheTraveller: Undo revision 1008 by 127.0.0.1 (talk)</p> <hr /> <div>This page will outline some candidate theories of operation (or non-operation).<br /> <br /> == Proponent Theories ==<br /> <br /> * Prof. Juan Yang's theory &lt;ref&gt;[http://www.emdrive.com/yang-juan-paper-2012.pdf Pro Juan Yang EMDrive Theory and Results]&lt;/ref&gt;<br /> * Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)<br /> * [[Evanescent waves]]&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/ref&gt;<br /> * Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules &lt;ref&gt;http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 &lt;/ref&gt;<br /> * [[@notsosureofit Hypothesis]]<br /> * [[Mike McCulloch's MiHsC Theory]]<br /> * Roger Shawyer's EMDrive &lt;ref&gt;[http://www.emdrive.com/theorypaper9-4.pdf Roger Shawyer EMDrive Theory]&lt;/ref&gt;&lt;ref&gt;[[File:EmDrive Basic Theory.ppt]]&lt;/ref&gt;<br /> * [[Todd Desiato (@WarpTech)'s Evanescent Wave Theory]]<br /> * Curving Rf beams&lt;ref&gt;[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]&lt;/ref&gt; - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.<br /> <br /> == Debunking Theories ==<br /> ''These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.''<br /> <br /> === Energy and Momentum Conservation ===<br /> If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]].<br /> <br /> It may also violate [[Momentum Conservation]].<br /> <br /> === Exact Standing Wave Solution of Maxwell's Equations ===<br /> <br /> On 8/5/14, Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html posted an exact solution] for the resonant modes (for modes having constant electromagnetic field variation in the azimuthal direction, such that m=0) of a cavity in the shape of a truncated cone with spherical ends. Egan also calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations (assuming no sources or sinks in the cavity).<br /> <br /> === Experimental Artifacts ===<br /> <br /> This assertion is that all positive experimental results are results of artifacts, such as:<br /> <br /> * Measuring error<br /> * Thermal effects<br /> * Mechanical vibration<br /> * Magnetic effects with environment<br /> <br /> These are discussed in more detail at [[Possible Error Sources]].<br /> <br /> == References ==<br /> &lt;references /&gt;</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1005 2015-07-04T02:35:10Z

<p>TheTraveller: Undo revision 1004 by TheTraveller (talk)</p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/Futurology/comments/34cq1b/the_facts_as_we_currently_know_them_about_the/ this page] has a summary.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1004 2015-07-04T02:34:10Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/Futurology/comments/34cq1b/the_facts_as_we_currently_know_them_about_the/ this page] has a summary.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1003 2015-07-04T02:33:36Z

<p>TheTraveller: Undo revision 1001 by Saucyjack (talk)</p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/Futurology/comments/34cq1b/the_facts_as_we_currently_know_them_about_the/ this page] has a summary.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Frequently_Asked_Questions&diff=1000 2015-07-03T06:18:54Z

<p>TheTraveller: </p> <hr /> <div>; [http://emdrive.com/faq.html EMDrive/SPR web site FAQ]<br /> <br /> ; What are the experimental results regarding the EM Drives?<br /> : See [[Experimental Results]].<br /> <br /> ; Does the EM Drive violate momentum- or energy-conservation?<br /> : See [[Energy Conservation]] and [[Momentum Conservation]].<br /> <br /> ; How does an EM Drive work?<br /> : This a graph showing how R. Shawyer describes the operation of the EM Drive. The EM Drive researchers at NASA Eagleworks and Prof. Yang's team at Northwestern Polytechnical University (NWPU) in Xi'anin, China, have different theories of its operation:<br /> <br /> &lt;img src=&quot;http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=629593;image&quot; style=&quot;width:25%&quot;&gt;<br /> <br /> [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309818#msg1309818 Image of EmDrive thrust direction in posts attachment.]<br /> <br /> See the [[Theory]] page for a list of additional theories purporting to explain how the EmDrive works.<br /> <br /> == External Links ==<br /> <br /> * [http://en.wikipedia.org/wiki/EmDrive Wikipedia] has a lot of technical background.<br /> * On Reddit, [http://www.reddit.com/r/Futurology/comments/34cq1b/the_facts_as_we_currently_know_them_about_the/ this page] has a summary.</div>

TheTraveller http://emdrive.echothis.com/index.php?title=Potential_EMDrive_solar_system_explorer_ship&diff=999 2015-07-03T06:17:58Z

<p>TheTraveller: </p> <hr /> <div>Mark Rademaker, working with Dr. White of NASA Eagleworks has created a vision of a EMDrive powered solar system explorer ship.<br /> <br /> [https://m.flickr.com/#/photos/yard2380 IXS Clark]<br /> <br /> [[File:IXSClark2.jpg]]<br /> <br /> 10 of 20 EMDrive pods<br /> <br /> [[File:EMDrivePodsx10.jpg]]<br /> <br /> Based on Dr. Whites other data, IXS Clark data is:<br /> <br /> 1) 90t or 90,000kgs<br /> <br /> 2) 2MWe nuclear generator in the aft section of the ship. That is a max electricity availability of 2MWh of electricity every hour or 2,000kWh per hour.<br /> <br /> 3) 20 EMDrive propellantless force generators rated at 4N of force generation per kW of applied microwave power. (4N/kW) Each of the 20 EMDrives (100kW energy usage each) will probably be driven by its own dual redundant 2 x 100kW microwave Rf generators.<br /> <br /> 4) Total force generation of 8,000N being 2,000 kW of power at 4N per kW. 2,000kW * 4N/kW = 8,000 Newtons of force to drive the 90t ship. 8,000N is approx 816kg of force.<br /> <br /> 5) Continual acceleration will then be A = F/M or 0.088m/s^2 = 8,000N/90,000kgs<br /> <br /> 6) The IXS Clark's 90t breaks down as follows: 50t cargo, 20t EMDrives and support systems (microwave generators, cooling, etc), 20t nuclear generator.<br /> <br /> Which means that as long as the nuclear generator on the IXS Clark can generate 2,000kW of electricity, the ship will continue to accelerate at 9.1milli-g<br /> <br /> <br /> == These are the potential voyages of the IXS Clark ==<br /> <br /> Please use the right hand 4N/kW transit examples.<br /> <br /> '''Mars'''<br /> <br /> [[File:ISXClarkMars.jpg]]<br /> <br /> <br /> <br /> '''Jupiter'''<br /> <br /> [[File:IXSClarkJupiter.jpg]]<br /> <br /> <br /> <br /> '''Saturn'''<br /> <br /> [[File:IXSClarkSaturn.jpg]]<br /> <br /> <br /> <br /> '''Titan/Enceladus'''<br /> <br /> Note based on 0.4N/kW and not 4N/kW<br /> 0.91milli-g acceleration and not 9.1milli-g acceleration<br /> <br /> [[File:IXSClarkTitanEnceladusMissìon.png]]<br /> <br /> <br /> <br /> '''Uranus'''<br /> <br /> [[File:IXSClarkUranus.jpg]]<br /> <br /> <br /> <br /> <br /> <br /> '''Neptune'''<br /> <br /> [[File:IXSClarkNeptune.jpg]]<br /> <br /> <br /> <br /> '''Pluto'''<br /> <br /> [[File:IXSClarkPluto.jpg]]<br /> <br /> <br /> <br /> '''1,000 AU Deep Space'''<br /> <br /> [[File:IXSClark1000AUDeepSpace.jpg]]<br /> <br /> <br /> <br /> '''Proxima Centauri'''<br /> <br /> [[File:IXSClarkProximaCentauri.jpg]]</div>

TheTraveller