A reaction engine is a type of combustion engine that uses the reactive effect of the substance exiting the engine to move it in the opposite direction (law of action and reaction).

This article will briefly examine how a reaction engine works, its history, and possible types.

A rocket engine is a type of reactive engine that is not affected by the external environment, thanks to the fact that it carries fuel and an oxidizer in its reservoir.

This article will briefly examine how a rocket engine works, its history, and possible types.