List of Suggested Experiments - Revision history

Bob: /* Design/Shape Modifications */

2017-02-21T10:52:26Z

Design/Shape Modifications

← Older revision		Revision as of 03:52, 21 February 2017
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	# Use accelerometer for rotational feedback on the Gunn diode bias to optimize for chamber resonance		# Use accelerometer for rotational feedback on the Gunn diode bias to optimize for chamber resonance
	# In consideration of <ref>[https://www.sciencedaily.com/releases/2016/08/160822152626.htm]</ref> suggest filling the EMdrive cavitity with pure hydrogen to see if the thrust changes.		# In consideration of <ref>[https://www.sciencedaily.com/releases/2016/08/160822152626.htm]</ref> suggest filling the EMdrive cavitity with pure hydrogen to see if the thrust changes.
			# Insert fibre optic cable. Hook up to photon counter and/or spectrum analyzer.

	== Virtual Frustum EMDrive ==		== Virtual Frustum EMDrive ==

Terry1094 at 22:16, 23 August 2016

2016-08-23T22:16:12Z

← Older revision		Revision as of 15:16, 23 August 2016
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	# Link two magnetrons together in a "slaved" configuration to amplify the Rf signal to an EmDrive.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401433#msg1401433 Forum post by ElizabethGreene]</ref>		# Link two magnetrons together in a "slaved" configuration to amplify the Rf signal to an EmDrive.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401433#msg1401433 Forum post by ElizabethGreene]</ref>
	# Use accelerometer for rotational feedback on the Gunn diode bias to optimize for chamber resonance		# Use accelerometer for rotational feedback on the Gunn diode bias to optimize for chamber resonance
			# In consideration of <ref>[https://www.sciencedaily.com/releases/2016/08/160822152626.htm]</ref> suggest filling the EMdrive cavitity with pure hydrogen to see if the thrust changes.

	== Virtual Frustum EMDrive ==		== Virtual Frustum EMDrive ==

127.0.0.1 at 17:30, 14 December 2015

2015-12-14T17:30:48Z

@@ Line 19: / Line 19: @@
 # Link two magnetrons together in a "slaved" configuration to amplify the Rf signal to an EmDrive.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401433#msg1401433 Forum post by ElizabethGreene]</ref>
 # Use accelerometer for rotational feedback on the Gunn diode bias to optimize for chamber resonance
 == Experimental Measurement Setups ==

127.0.0.1: Undo revision 1315 by 127.0.0.1 (talk)

2015-12-14T17:30:03Z

Undo revision 1315 by 127.0.0.1 (talk)

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127.0.0.1 at 17:29, 14 December 2015

2015-12-14T17:29:14Z

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127.0.0.1: /* Design/Shape Modifications */

2015-09-16T22:23:15Z

Design/Shape Modifications

← Older revision		Revision as of 15:23, 16 September 2015
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	# Test the EmDrive at both 50hz and 60Hz duty cycles for the Rf input, as well as a 100% on duty cycle.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401341#msg1401341 Forum post by TheTraveller]</ref>		# Test the EmDrive at both 50hz and 60Hz duty cycles for the Rf input, as well as a 100% on duty cycle.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401341#msg1401341 Forum post by TheTraveller]</ref>
	# Link two magnetrons together in a "slaved" configuration to amplify the Rf signal to an EmDrive.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401433#msg1401433 Forum post by ElizabethGreene]</ref>		# Link two magnetrons together in a "slaved" configuration to amplify the Rf signal to an EmDrive.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401433#msg1401433 Forum post by ElizabethGreene]</ref>
			# Use accelerometer for rotational feedback on the Gunn diode bias to optimize for chamber resonance

	== Experimental Measurement Setups ==		== Experimental Measurement Setups ==

Sfrank: /* Design/Shape Modifications */

2015-07-08T13:42:37Z

Design/Shape Modifications

← Older revision		Revision as of 06:42, 8 July 2015
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	# Place two vent tubes for heated expanding air that bisect equal volumes on the resonating cavity. When air heats up it is exhausted perpendicular to thrust and displaces air volume equally so as to eliminate thrust from pressure gradients. <ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1385064#msg1385064 Forum post by dustinthewind], A suggested experiment modification</ref>		# Place two vent tubes for heated expanding air that bisect equal volumes on the resonating cavity. When air heats up it is exhausted perpendicular to thrust and displaces air volume equally so as to eliminate thrust from pressure gradients. <ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1385064#msg1385064 Forum post by dustinthewind], A suggested experiment modification</ref>
	# Test the EmDrive's inertial reaction to an outside force by using a known mass on to pull agains the EmDrive while it is powered.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1387190#msg1387190 Forum post by arc]</ref>		# Test the EmDrive's inertial reaction to an outside force by using a known mass on to pull agains the EmDrive while it is powered.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1387190#msg1387190 Forum post by arc]</ref>
			# Test the EmDrive at both 50hz and 60Hz duty cycles for the Rf input, as well as a 100% on duty cycle.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401341#msg1401341 Forum post by TheTraveller]</ref>
			# Link two magnetrons together in a "slaved" configuration to amplify the Rf signal to an EmDrive.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1401433#msg1401433 Forum post by ElizabethGreene]</ref>

	== Experimental Measurement Setups ==		== Experimental Measurement Setups ==

Sfrank: /* Design/Shape Modifications */

2015-06-10T15:18:32Z

Design/Shape Modifications

← Older revision		Revision as of 08:18, 10 June 2015
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	# Test a pillbox-shaped cavity similar to the Cannae drive and compare results to an EmDrive frustum tested with the same experimental setup.		# Test a pillbox-shaped cavity similar to the Cannae drive and compare results to an EmDrive frustum tested with the same experimental setup.
	# Place two vent tubes for heated expanding air that bisect equal volumes on the resonating cavity. When air heats up it is exhausted perpendicular to thrust and displaces air volume equally so as to eliminate thrust from pressure gradients. <ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1385064#msg1385064 Forum post by dustinthewind], A suggested experiment modification</ref>		# Place two vent tubes for heated expanding air that bisect equal volumes on the resonating cavity. When air heats up it is exhausted perpendicular to thrust and displaces air volume equally so as to eliminate thrust from pressure gradients. <ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1385064#msg1385064 Forum post by dustinthewind], A suggested experiment modification</ref>
			# Test the EmDrive's inertial reaction to an outside force by using a known mass on to pull agains the EmDrive while it is powered.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1387190#msg1387190 Forum post by arc]</ref>

	== Experimental Measurement Setups ==		== Experimental Measurement Setups ==

Sfrank at 19:31, 8 June 2015

2015-06-08T19:31:24Z

Dustinthewind: /* Design/Shape Modifications */

2015-06-07T01:52:23Z

Design/Shape Modifications

← Older revision		Revision as of 18:52, 6 June 2015
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	# Measure the force on two cylindrical resonant wave guides (lowest transverse electric mode) tuned to resonate at the same frequency (one is adjustable) with their flat plates separated by a quarter wavelength. The current in cavity one is out of phase with cavity two by 90 degrees. <ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1375365#msg1375365 Forum post by dustinthewind], A suggested experiment.</ref>		# Measure the force on two cylindrical resonant wave guides (lowest transverse electric mode) tuned to resonate at the same frequency (one is adjustable) with their flat plates separated by a quarter wavelength. The current in cavity one is out of phase with cavity two by 90 degrees. <ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1375365#msg1375365 Forum post by dustinthewind], A suggested experiment.</ref>
	# Test a pillbox-shaped cavity similar to the Cannae drive and compare results to an EmDrive fustrum tested with the same experimental setup.		# Test a pillbox-shaped cavity similar to the Cannae drive and compare results to an EmDrive fustrum tested with the same experimental setup.
			# Place two vent tubes for heated expanding air that bisect equal volumes on the resonating cavity. When air heats up it is exhausted perpendicular to thrust and displaces air volume equally so as to eliminate thrust from pressure gradients. <ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1385064#msg1385064 Forum post by dustinthewind], A suggested experiment modification</ref>

	== Experimental Measurement Setups ==		== Experimental Measurement Setups ==

← Older revision		Revision as of 12:31, 8 June 2015
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	This page compiles suggestions for as-yet untested variations in experiment designs for EmDrive testing. When possible, links to the original suggestion and a brief description of the justification for this test are provided.		This page compiles suggestions for as-yet untested variations in experiment designs for EmDrive testing. When possible, links to the original suggestion and a brief description of the justification for this test are provided.

	Note: For purposes of this list, the baseline for experimentation is considered to be a copper ~~fustrum~~ with either a magnetron or coaxial RF feed operated at approximately 2.45Ghz, similar to Shawyer's Feasability Study		Note: For purposes of this list, the baseline for experimentation is considered to be a copper frustum with either a magnetron or coaxial RF feed operated at approximately 2.45Ghz, similar to Shawyer's Feasability Study

	== Design/Shape Modifications ==		== Design/Shape Modifications ==
	# Replace solid endplates with a circular grid design similar to the endplates used by Cullen in his 1950's waveguide experiments,<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1370479#msg1370479 Forum post by Rodal]</ref> or a mesh as the one used for the glass windows in home-microwave-ovens, having a spacing between mesh or grids small enough such that only wavelengths smaller than that can get through.<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1376108#msg1376108 Forum post by demofsky]</ref> Purpose: to allow convection through the ~~fustrum~~, eliminate buoyancy, thermal jet effects, natural thermal convection currents, and other gas effects.		# Replace solid endplates with a circular grid design similar to the endplates used by Cullen in his 1950's waveguide experiments,<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1370479#msg1370479 Forum post by Rodal]</ref> or a mesh as the one used for the glass windows in home-microwave-ovens, having a spacing between mesh or grids small enough such that only wavelengths smaller than that can get through.<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1376108#msg1376108 Forum post by demofsky]</ref> Purpose: to allow convection through the frustum, eliminate buoyancy, thermal jet effects, natural thermal convection currents, and other gas effects.
	# Place [http://en.wikipedia.org/wiki/Ferrite_(magnet) ferrite beads] in the ~~fustrum~~, either one large one next to an endplate or a pattern of them along a line in the longitudinal direction. Purpose: to increase attenuation gradient in TE modes, having an axial magnetic field.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1380265#msg1380265 Forum post by Rodal] summarizing several prior posts.</ref>		# Place [http://en.wikipedia.org/wiki/Ferrite_(magnet) ferrite beads] in the frustum, either one large one next to an endplate or a pattern of them along a line in the longitudinal direction. Purpose: to increase attenuation gradient in TE modes, having an axial magnetic field.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1380265#msg1380265 Forum post by Rodal] summarizing several prior posts.</ref>
	# Build Large end plate out of [http://en.wikipedia.org/wiki/Permeability_%28electromagnetism%29#Values_for_some_common_materials Metglas] or a similar material with high magnetic permeability like cast iron or any ferrite.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1381091#msg1381091 Forum post by Flyby] referencing earlier posts.</ref> Purpose: to test de Aquino's conjecture regarding the effect of power dissipation at the end faces of the truncated cone.		# Build Large end plate out of [http://en.wikipedia.org/wiki/Permeability_%28electromagnetism%29#Values_for_some_common_materials Metglas] or a similar material with high magnetic permeability like cast iron or any ferrite.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1381091#msg1381091 Forum post by Flyby] referencing earlier posts.</ref> Purpose: to test de Aquino's conjecture regarding the effect of power dissipation at the end faces of the truncated cone.
	# Place a ruby inside near one of the ends to emit at 2.4 GHz as used in solid state Masers.		# Place a ruby inside near one of the ends to emit at 2.4 GHz as used in solid state Masers.
	# Fill the ~~fustrum~~ with ammonia gas to emit at 24GHz. Purpose: To produce maser-like amplification inside the ~~fustrum~~.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379801#msg1379801 Forum post by aero], in response to [http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379763#msg1379763 Rodal's explanation of the history of maser development].</ref> '''Warning:''' If using ammonia, please follow [http://en.wikipedia.org/wiki/Ammonia#Safety_precautions appropriate safety procedures][https://www.health.ny.gov/environmental/emergency/chemical_terrorism/ammonia_tech.htm][http://chemm.nlm.nih.gov/ammonia_hospital_mmg.htm].		# Fill the frustum with ammonia gas to emit at 24GHz. Purpose: To produce maser-like amplification inside the frustum.<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379801#msg1379801 Forum post by aero], in response to [http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379763#msg1379763 Rodal's explanation of the history of maser development].</ref> '''Warning:''' If using ammonia, please follow [http://en.wikipedia.org/wiki/Ammonia#Safety_precautions appropriate safety procedures][https://www.health.ny.gov/environmental/emergency/chemical_terrorism/ammonia_tech.htm][http://chemm.nlm.nih.gov/ammonia_hospital_mmg.htm].
	# Place a dielectric next to the Small end, as done by NASA Eagleworks, who found extruded HDPE to be slightly better than extruded PTFE. Do not use molded (instead of extruded) polymers. NASA Eagleworks found that Neoprene rubber performed poorly as a dielectric in the EM Drive, as it resulted in considerably less thrust.		# Place a dielectric next to the Small end, as done by NASA Eagleworks, who found extruded HDPE to be slightly better than extruded PTFE. Do not use molded (instead of extruded) polymers. NASA Eagleworks found that Neoprene rubber performed poorly as a dielectric in the EM Drive, as it resulted in considerably less thrust.
	# Separate resonance and attenuation chambers. Purpose: Proposed by WarpTech as a test of [[Todd Desiato (@WarpTech)'s PV Model Theory\| his theory]].		# Separate resonance and attenuation chambers. Purpose: Proposed by WarpTech as a test of [[Todd Desiato (@WarpTech)'s PV Model Theory\| his theory]].
	# Apply a silver or gold coating to the inside of a copper ~~fustrum~~. Purpose: The increase microwave reflectivity, and therefore increase Q factor.		# Apply a silver or gold coating to the inside of a copper frustum. Purpose: The increase microwave reflectivity, and therefore increase Q factor.
	# Measure the force on two cylindrical resonant wave guides (lowest transverse electric mode) tuned to resonate at the same frequency (one is adjustable) with their flat plates separated by a quarter wavelength. The current in cavity one is out of phase with cavity two by 90 degrees. <ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1375365#msg1375365 Forum post by dustinthewind], A suggested experiment.</ref>		# Measure the force on two cylindrical resonant wave guides (lowest transverse electric mode) tuned to resonate at the same frequency (one is adjustable) with their flat plates separated by a quarter wavelength. The current in cavity one is out of phase with cavity two by 90 degrees. <ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1375365#msg1375365 Forum post by dustinthewind], A suggested experiment.</ref>
	# Test a pillbox-shaped cavity similar to the Cannae drive and compare results to an EmDrive ~~fustrum~~ tested with the same experimental setup.		# Test a pillbox-shaped cavity similar to the Cannae drive and compare results to an EmDrive frustum tested with the same experimental setup.
	# Place two vent tubes for heated expanding air that bisect equal volumes on the resonating cavity. When air heats up it is exhausted perpendicular to thrust and displaces air volume equally so as to eliminate thrust from pressure gradients. <ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1385064#msg1385064 Forum post by dustinthewind], A suggested experiment modification</ref>		# Place two vent tubes for heated expanding air that bisect equal volumes on the resonating cavity. When air heats up it is exhausted perpendicular to thrust and displaces air volume equally so as to eliminate thrust from pressure gradients. <ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1385064#msg1385064 Forum post by dustinthewind], A suggested experiment modification</ref>

	== Experimental Measurement Setups ==		== Experimental Measurement Setups ==
	# Use smokesticks to test for out-gassing and hot air jets from the ~~fustrum~~<ref>Credit to @Seeshells</ref>		# Use smokesticks to test for out-gassing and hot air jets from the frustum<ref>Credit to @Seeshells</ref>
	# Test on a zero-g simulator flight.		# Test on a zero-g simulator flight.
	# Cavendish Pendulum<ref>http://web.archive.org/web/20080508011932/http://www.sas.org/tcs/weeklyIssues_2005/2005-07-01/feature1/index.html</ref>		# Cavendish Pendulum<ref>http://web.archive.org/web/20080508011932/http://www.sas.org/tcs/weeklyIssues_2005/2005-07-01/feature1/index.html</ref>