>Are there already atmosphere-breathing engines that do this and what are they called? Generally this kind of engine is called Magnetohydrodynamic drive. I'm n

>Are there already atmosphere-breathing engines that do this and what are they called? Generally this kind of engine is called Magnetohydrodynamic drive. I'm not sure about atmospheric engines, but according to wiki[1] there are prototypes that uses water as working fluid. [1] https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive