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STRAIGHTFORWARD EMDRIVE SETUP USING A MICROWAVE CONTACTLESS TRANSITION: FIRST RESULTS ON FRUSTUM CAVITIES

By H. Peyre, J. Sokoloff, O. Pascal, O. Pigaglio, and N. Raveu

Full Article PDF (412 KB)

Abstract:
This paper presents the work of the LAPLACE Electromagnetism Research Group to build an experimental setup able to measure tiny forces that may appear in microwave cavities, in the context of EMDrive investigations. It is based on a commercial balance in the range of 0.1 mN sensitivity, a contactless feeding for more than 150~W RF power, and self calibrating device process. It requires a double cavity system in mirror configuration and is here experimented with frustum cavities, different from the NASA one [1]. The global setup can make force measurement and calibration in less than two seconds. Investigating two different cavities and various electromagnetic modes for the biggest, no force is reported while the 0.1 mN sensitivity is demonstrated.

Citation:
H. Peyre, J. Sokoloff, O. Pascal, O. Pigaglio, and N. Raveu, "Straightforward EMDrive Setup Using a Microwave Contactless Transition: First Results on Frustum Cavities," Progress In Electromagnetics Research M, Vol. 95, 45-52, 2020.
doi:10.2528/PIERM20052905
http://www.jpier.org/pierm/pier.php?paper=20052905

References:
1. White, H., P. March, J. Lawrence, J. Vera, A. Sylvester, D. Brady, and P. Bailey, "Measurement of impulsive thrust from a closed radio-frequency cavity in vacuum," Journal of Propulsion and Power, Vol. 33, 830841, Jul. 2017.

2. McCulloch, M. E., "Propellant-less propulsion from quantized inertia," Journal of Space Exploration, Vol. 7, 1-7, 2018.

3. Koßling, M., M. Monette, M. Weikert, and M. Tajmar, "The spacedrive project — Thrust balance development and new measurements of the mach-effect and emdrive thrusters," Acta Astronautica, Vol. 161, 139152, Aug. 2019.
doi:10.1016/j.actaastro.2019.05.020

4. Sokoloff, J., O. Pascal, O. Pigaglio, N. Raveu, and H. Peyre, "Proposal of a handy setup for discriminating parasitic effects for the measurement of impulsive thrust from a microwave cavity," Progress In Electromagnetics Research C, Vol. 98, 269-281, 2020.
doi:10.2528/PIERC19090507

5. Peyre, H., O. Pascal, J. Sokoloff, K. Elis, O. Pigaglio, and N. Raveu, "High power transmission using contactless microwave transition on an emdrive setup," Progress In Electromagnetics Research Letters, Vol. 90, 15-20, 2020.
doi:10.2528/PIERL19110504

6. McDonald, M. S., M. W. Nurnberger, and L. T. Williams, "Preparations for thrust measurement and error discussion of the impulse resonant microwave cavity," Journal of the British Interplanetary Society, Vol. 70, 415-424, 2017.


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