Reactionless drive

agreed, I tried to find the EM drive on this site. could not....
Here's a few, that like one or two other threads on that general topic, got heated and nasty, thanks to in particular one now departed poster:

If you wish to continue, either post in one of those, or start a new thread.
All linked articles in #22 are irrelevant to thread topic, but then so many posts in so many threads are similarly irrelevant, and besides few care either way here at random content SF.