Propulsion – I have been watching the stories in the media on the EM Drive for a while now. If you are new to this, the EM Drive is a resonant cavity thruster. In simple terms, it is an electrically powered thruster that requires no fuel. It was proposed by Roger Shawyer in 2001. Most consider the EM Drive to be impossible as it defies currently known physics.
Previous tests of an EM Drive prototype by NASA showed some success. The EM Drive was subjected to more strict testing by a team at the Dresden University of Technology in Germany led by Martin Tajmar. They presented their results at the Aeronautics and Astronautics Association of France’s Space Propulsion conference on May 16, 2018. Their tests are not supportive of the claims made for the EM Drive.
The results presented by Tajmar is reviewed in the video above by Scott Manley. Tajmar and his team had not totally given up on the EM Drive at the time of their report. They plan further testing, but the prospect of this being the solution to propulsion hoped for is dim.