Somebody correct me if I'm wrong, but group velocity is the velocity of a wavefront, or per Wiki, the modulation or envelope of a wave. It is a velocity, but it is not a velocity of something, that is, it is not a velocity of mass. It is also not the velocity of a signal carrying information, which is also something less than or equal to c.Backing up to the Wiki article, the matter wave group velocity is also just a velocity, not a velocity of matter. How does Shawyer get work done, when all he is using is a velocity on which to hang his theory?
And when I looked later the Onion Drive's home pagehttp://www.stargate-chronicles.com/oniondrive/onion.htmon the botton of the site was written something about the Schauberger's "Repulsine" and the Searl levity disc. Both of the crafts - are they a deception? Somewhere I've read that the IGV has been tested by some Air Force guys back in the 1970s. Was it realy airborne?
Sith:The nuclear bomb based Project Orion propulsion approach had plenty power, but its Isp was "only" around 10,000 seconds. The worst MLT on the other hand has an equivalent Isp measured in the tera-seconds and it works rapidly up from there as the delivered thrust increases.
I have been studying Mahood's thesis on and off over the last several weeks. He admits that the ORNL refutation of his experimental work has some validity, but insists that further experimentation will validate his results. Could someone post a more recent PDF of Mahood and Woodward's math and experimental work?Mahood's math is gnarly for me, but I'm working thru the equations in his thesis appendix one by one, in case anybody is wondering, or even cares.However, thrust efficiency is a major stumbling block, if the current (1999) readings are taken as accurate. If my tentative suggestion of newtons per watt as a unit of measure is acceptable, the power supply for such a thruster would be distressingly large for the amount of thrust generated.
In addition, he is ignoring local gravitational effects, such as the planet Earth, in favor of distant gravitational effects, which are several orders of magnitude smaller. I don't understand the derivation of his justification for this.
Further, the thesis offers no insight as to what I understand to be the tapping of some other energy source to provide momentum. This has to do mass fluctuations in excess of 100%, so there seems to be more recent math which I would appreciate reviewing.
Finally, the mass fluctuations of the Ti ion appear to take place at non-relativistic speeds. What is the math behind this assertion?
What about the Onion Drive? I saw it's theory in the aiaa presentation 2008. http://www.aiaa-la.org/flyers/Adv%20Space%20Propulsion%20for%20Interstellar%20Travel%20-%20GMeholic%20042408.pdfSlide 34/55Is it equal to the MLT thruster?
About the MLT drive - for example it works several days in space, at 1g, without stopping, but suddenly it stops. Would the craft "drop out of warp" or the speed will remain the same to the point it stoped?
What his prediction indicate is that the phase of the laser light passing through the M-E induced spacetime distortion in the PZT ring would change in reference to the laser beam passing through the flat spacetime outside the PZT ring in the same way as the moving aether was suppose to affect the light beam in the M&M tests. See: http://en.wikipedia.org/wiki/Michelson-Morley_experiment