EXPERIMENTS ON EMDRIVE ENGINES
April 7, 2021
The EmDrive is a hypothetical rocket that proponents claim can generate thrust with no exhaust. This would violate all known physics. In 2016, a team at NASA's Eagleworks lab claimed to measure thrust from an EmDrive device, the news of which caused quite a stir. The latest attempt to replicate the shocking results has resulted in a simple answer: The Eagleworks measurement was from heating of the engine mount, not any new physics.
Michael Mendelbaum (Ph.D., specialist in "converting energy sources")
POSSIBLE THEORETICAL BACKGROUND FOR THE EMDRIVE (pdf, in Russian)
The article shows that how, in the experiments with the EmDrive engine, the uncompensated mechanical moment of the measured value occurs due to electrical interaction between the polarized (by the external very high frequency electrical field) surface layers of metal in the combustion chamber, and the polarization field.
Roger Shawyer C.Eng MIET
@ Satellite Propulsion Research (SPR) Ltd, 2006
A THEORY OF MICROWAVE PROPULSION FOR SPACECRAFT (pdf)
A new principle of electric propulsion for spacecraft is introduced, using microwave technology to achieve direct conversion of d.c. power to thrust without the need for propellant.
A simplified illustrative description of the principles of operation is given, followed by the derivation, from first principles, of an equation for the thrust from such a device. The implications of the law of conservation of energy are examined for both static and dynamic operation of the device.
with narration from Roger Shawyer, explaining the basic science behind EmDrive