Evanescent waves
From EM Drive
As proposed by Aero on the NSF forums, the possibility that the thrust is occurring as a result of the generation/leakage of evanescent waves.
Contents
Status
No longer considered a viable source of thrust.
Evidence
Initial calculations by Aero were showing an efficiency rating 2-3 times that of a perfect photon drive, which is beneath the observed ratings of Q-thruster test articles.[1]
Utilizing MEEP, the conclusion was that due to rapid dropoff at the frustum surface, evanescent waves were of insufficient magnitude to explain the observed thrust.[2]. See details about @aero's MEEP control file.
Relevant Papers
- Electromagnetic fields and transmission properties in tapered hollow metallic waveguides
Xiahui Zeng and Dianyuan Fan. Optics Express Vol. 17, Issue 1, pp. 34-45 (2009) •doi: 10.1364/OE.17.0
- "Extraordinary momentum and spin in evanescent waves" by Konstantin Y. Bliokh, Aleksandr Y. Bekshaev, and Franco Nori - See Supplementary Table 1.
- "Superluminal propagation of evanescent modes as a quantum effect" by Zhi-Yong Wang, Cai-Dong Xiong, Bing He.
- http://wwwsis.lnf.infn.it/pub/INFN-FM-00-04.pdf - I like Appendix B
- http://arxiv.org/pdf/1211.0530v2.pdf - This one just hints at our situation.
- http://bit.ly/1Ja6QLV - Again, hints
- http://tuttle.merc.iastate.edu/ee439/topics/tunneling.pdf - Tunneling and evanescent wave math are very similar.
- http://en.wikipedia.org/wiki/Maxwell_stress_tensor - Not quite sure why this is here, maybe the stress-energy tensor derivation?
