No, that's the EM drive. This engine is less or more a particle accelerator shooting high velocity noble gas. It's like a rocket (less or more), but instead of using a lot of slow matter, it use a little, but very fast, matter. It still requires a supply of matter to trow from the back of the spacecraft, it just uses it in a way to minimize the amount required (by trading it by silly amount of power).
It's based on the classic `F=m*a` Newtonian second law. But uses high `a` instead of high `m`.
The Hall and Ion engines just replace chemical energy with electricity.
Edit: Added the `F=ma` part. Edit2: Added that it still requires matter.
It's based on the classic `F=m*a` Newtonian second law. But uses high `a` instead of high `m`.
The Hall and Ion engines just replace chemical energy with electricity.
Edit: Added the `F=ma` part. Edit2: Added that it still requires matter.