EmDrive - Wikipedia
https://en.wikipedia.org/wiki/EmDriveEmDrive. In 2001, Shawyer founded Satellite Propulsion Research Ltd, to work on the EmDrive, which he said used a resonant cavity to produce thrust without propellant.The company was backed by a SMART award grant from the UK Department of Trade and Industry. In December 2002, he loosely described a prototype which he alleged had produced a thrust of 0.02 newtons …