I think we're getting on a tangent. But here's your answer. http://www.radartutorial.eu/03.linetheory/tl11.en.html
Quote from: SleeperService on 02/18/2015 03:09 pmQuote from: Giovanni DS on 02/18/2015 03:06 pmA feedback circuit would be required in order to keep the VCO on the resonant frequency. If such a feedback is possible then a simple MCU could be programmed to do that using an ADC as output, it would not be a PLL anyway but more similar to an FLL.Where does the feedback signal come from?This is the problem I do understand controls and realtime systems but microwaves and resonant cavities are not my field. How do you know it is resonating?In theory the thrust could be your feedback, you tune the VCO in order to maximize that.
Quote from: Giovanni DS on 02/18/2015 03:06 pmA feedback circuit would be required in order to keep the VCO on the resonant frequency. If such a feedback is possible then a simple MCU could be programmed to do that using an ADC as output, it would not be a PLL anyway but more similar to an FLL.Where does the feedback signal come from?
A feedback circuit would be required in order to keep the VCO on the resonant frequency. If such a feedback is possible then a simple MCU could be programmed to do that using an ADC as output, it would not be a PLL anyway but more similar to an FLL.
Higher thrust at lower Q seems to hint at heating/other reasons unfortunately...
Dr. Rodal,What do you think about the false maxima that we could get in the thrust of the EM Drive?
Quote from: SleeperService on 02/18/2015 04:20 pmDr. Rodal,What do you think about the false maxima that we could get in the thrust of the EM Drive?Need you to elaborate further: false because...it is a local maximum and not the true maxima...false because of error...false because of lag...
Not really my expertise field, but can somebody tell me if the volumetric resonance patterns are static or dynamic?iow, does the combination of internal frustrum shape and wavelength(s) cause the resonance pattern to shift left or right (Is that the "reverse" ppl were talking about?), or does it stay immobile (static) once the interference patterns are established ??I understand that the shape and aspect of the resonance pattern is very very sensitive and can easily change aspect (and direction?) caused by the slightest change (either wavelength or geometry of the frustrum).As some of you talked about dielectric materials possibly improving performance, I suppose a force could be generated from the high intensity microwave resonance spots colliding with the frustrum? Am I correct on this assumption?If that is the case, and looking at it from a distance, shouldn't we speak of a "magnetic pulse engine" as the high-intesity magnetic fields slam into frustrum wall, pushing it forward ?or.. am i talking completely BS here? Just trying to understand while feeling very much out of comfort zone...
we have found that the chiral molecule acquires a kineticmomentum during the switching of the external magnetic field as a result of itsinteraction with the vacuum field. On the other hand we have shown that, as aresult of the conservation of the total momentum K, there exists a transfer of linearmomentum from the vacuum field to the molecule.
Moreover, the same effect is expected in quantum vacuum.
Strong H field at dielectric disc. Just like theory suggests. Quotewe have found that the chiral molecule acquires a kineticmomentum during the switching of the external magnetic field as a result of itsinteraction with the vacuum field. On the other hand we have shown that, as aresult of the conservation of the total momentum K, there exists a transfer of linearmomentum from the vacuum field to the molecule.http://arxiv.org/pdf/1404.5990v1.pdfhttp://arxiv.org/abs/1304.6767But it isn't JUST chiral molecules, as I've shown experimental evidence of the observation of magneto-electric non-reciprocity in molecular nitrogen gas. https://hal.archives-ouvertes.fr/hal-00551421v1/documenthttp://arxiv.org/abs/1101.0712 Which means that air confined to a resonant cavity falls into their magneto-electric metric too. Any condition which creates a chiral electromagnetic vacuum environment works.Which explains why unloaded cavities tested by the Chinese and Shawyer work too.This implies that a magneto-electric directionally anisotropic electromagnetic environment also absolutely implies an anisotropic vacuum environment, as the authors suggest is true and aim to measure.QuoteMoreover, the same effect is expected in quantum vacuum.Only I found evidence last night that the vacuum anisotropy experiment has already been done in the 80s.http://heart-c704.uibk.ac.at/LV/Quantenoptik/Kapitel_8/Jhe_etal_PRL_58_666_%281987%29.pdfThis Emdrive operates exactly as I have suggested and existing theory supports. I've beat this dead horse enough.
Folks:While you all talk about various ways to accomplish the E&M simulations of these frustum cavities, I thought you might like to take a look at the COMSOL derived resonances of the Eagleworks Lab's copper frustum resonant cavity driven with a ~16mm OD loop antenna located 15% up the side wall of the frustum from the large OD end of the cavity. BTW, the EMPower amplifiers were delivered to the Lab yesterday and I'll be calibrating the power metering for one that was installed yesterday on the torque pendulum.Best, Paul M,
@ RODALCan you generate a dispersion relation from the exact solution ?