Difference between revisions of "Theory"

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m (Energy Conservation: added link to Momentum Conservation)
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This page will outline some candidate theories of operation (or non-operation).
 
This page will outline some candidate theories of operation (or non-operation).
  
=== Proponent Theories ===
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== Proponent Theories ==
 
* Roger Shawyer's, EM Drive creator's theory
 
* Roger Shawyer's, EM Drive creator's theory
 
* Prof. Juan Yang's theory
 
* Prof. Juan Yang's theory
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* Curving Rf beams<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]</ref> - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.
 
* Curving Rf beams<ref>[http://forum.nasaspaceflight.com/index.php?topic=37642.msg1379281#msg1379281 Post by @aero]</ref> - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.
  
=== Debunking Theories ===
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== Debunking Theories ==
 
''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.''
 
''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.''
  
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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).
 
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).
  
=== Experimental Artifact ===
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=== Experimental Artifacts ===
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This assertion is that all positive experimental results are results of artifacts, such as:
 +
 
 
* Measuring error
 
* Measuring error
 
* Thermal effects
 
* Thermal effects

Revision as of 10:20, 30 May 2015

This page will outline some candidate theories of operation (or non-operation).

Proponent Theories

Debunking Theories

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.

Energy and Momentum Conservation

If the EM Drive produces constant-acceleration it will violate Energy Conservation.

It may also violate Momentum Conservation.

Exact Standing Wave Solution of Maxwell's Equations

On 8/5/14, Greg Egan 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).

Experimental Artifacts

This assertion is that all positive experimental results are results of artifacts, such as:

  • Measuring error
  • Thermal effects
  • Mechanical vibration
  • Magnetic effects with environment

These are discussed in more detail at Possible Error Sources.

References