Evanescent waves: Difference between revisions
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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.<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1313876#msg1313876 Initial calculations by aero.]</ref> | 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.<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1313876#msg1313876 Initial calculations by aero.]</ref> | ||
Utilizing [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP], the conclusion was that due to rapid dropoff at the frustum surface, evanescent waves were of insufficient magnitude to explain the observed thrust.<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 this post by @aero on modeled evanescent waves]</ref> | Utilizing [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP], the conclusion was that due to rapid dropoff at the frustum surface, evanescent waves were of insufficient magnitude to explain the observed thrust.<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 this post by @aero on modeled evanescent waves]</ref>. See details about @aero's [http://forum.nasaspaceflight.com/index.php?topic=37642.msg1382078#msg1382078 MEEP control file]. | ||
== Relevant Papers == | == Relevant Papers == | ||
Revision as of 13:55, 30 May 2015
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.
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.<ref>Initial calculations by aero.</ref>
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.<ref>this post by @aero on modeled evanescent waves</ref>. See details about @aero's MEEP control file.
Relevant Papers
This list was assembled by Aero<ref>Forum post by @aero</ref>
- http://arxiv.org/pdf/1308.0547.pdf - See Supplementary Table 1.
- http://arxiv.org/pdf/0712.0347.pdf
- 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?
References
<references />