Roger Shawyer Interviewed about the EmDrive: Sees his Invention Transforming Transportation in a Decade

The most effective device working on this principle would be a photon rocket and there are rather strict constrains of thrust/input power efficiency of such device. The mass energy equivalence simply produces too small momentum for to explain some usable thrust. So I'm pretty sure, that the EMDrive cannot utilize the momentum of electromagnetic waves only (not to say about fact, that no EM wave is actually leaving the resonator, which Shawyer ignores completely).

https://blog.xkcd.com/2008/02/15/the-laser-elevator/

You can imagine the EMDrive like the boat without bottom (bottomless wooden washtub so to say), which is floating at the water surface. We're not allowed to use the paddles: everything what we can do are the ripples inside the resonator. But these ripples cannot escape from it, so how they could contribute to the reactive force?

http://i.filmot.org/Qg25uML.gif

The explanation can be based on fact, that making splash inside the boat would also generate the sound in underwater, which could leave the bottomless vessel already. In this water surface analogy it's therefore the underwater sound wave, not the surface ripples what propels the EMDrive forward. Every ripple has its scalar density associated with it and this density would be proportional to the wave frequency. The resonator is conical, we can therefore have ripples of different wavelength at both ends of it and generate mass density gradient (actually artificial gravity field) inside the resonator, which would propel the EMDrive forward.

https://www.researchgate.net/p…THEORY_-_GRAVITY_IN_A_CAN

This theory could be verified experimentally, because the flux of scalar waves escaping from EMDrive should exhibit both the mechanical forces to specific detectors (including asymmetric capacitor or another EMDrive unit), both it should lead into distortions of space-time observable with White–Juday warp-field interferometer.

http://i.imgur.com/BrqftvF.gif

Another theory is bringing more insight in Shawyer device. It proposes, that the photons resonating inside the cavity of EMDrive get polarized by their reflection and they materialize into a stream of subtle invisible particles (dark matter or scalar waves) which can pass the walls of resonator freely and which generate thrust by classical reactive force.

http://www.sciencealert.com/ne…ewton-s-3rd-law-after-all

This theory could explain the inconsistencies, which the replications of EMDrive face. If the photons wouldn't get polarized with reflection under proper Brewster angle, if the number of photons of opposite spin wouldn't be equal, if the photons of the opposite spin wouldn't materialize at one side of resonator in sufficient yield, then the drag cannot be actually formed.

This theory can also explain, why the former attempts for EMDrive replication (Tajmar & all) failed once the researchers connected the EMdrive to a magnetron at random place of resonator through single wide window. If you take a look at the original device of Shawyer you'll realize, it's connected to magnetron in much sophisticated way: through a pair of narrow coaxial waveguides, which enter the resonator in exact locations in pinpoint manner. Only the standing waves from such pin-point sources can interfere inside the resonator in defined way. The principle of EMDrive may be therefore more subtle & complex, than it looks at the first sight.

http://i.filmot.org/JAY8gav.jpg