Difference between revisions of "Theory"
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=== Debunking 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.'' | ''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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| + | ==== Energy Conservation == | ||
| + | If the EM Drive produces constant-acceleration it will violate [[Energy Conservation]]. | ||
==== Exact Standing Wave Solution of Maxwell's Equations ==== | ==== Exact Standing Wave Solution of Maxwell's Equations ==== | ||
Revision as of 09:59, 30 May 2015
This page will outline some candidate theories of operation (or non-operation).
Contents
Proponent Theories
- Roger Shawyer's, EM Drive creator's theory
- Prof. Juan Yang's theory
- Dr. Harold Sonny White's Quantum vacuum plasma thruster model (QVP thruster)
- Evanescent waves[1]
- Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules [2]
- @notsosureofit Hypothesis
- Mike McCulloch's MiHsC Theory
- Curving Rf beams[3] - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.
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 Conservation
If the EM Drive produces constant-acceleration it will violate Energy 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 Artifact
- Measuring error
- Thermal effects
- Mechanical vibration
- Magnetic effects with environment
These are discussed in more detail at Possible Error Sources.
References
- ↑ 2/2/15 post by @aero modeled evanescent waves using MEEP. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.
- ↑ http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392
- ↑ Post by @aero
