Future --- Air-Breathing Rocket --- The Engine of the Air-Breathing Rocket

Instead of using liquid oxidizer, an air-breathing rocket will take air from the atmosphere. The oxygen will then combine with the fuel to create combustion and provide force.
An air-breathing rocket engine, also called a rocket-based, combined cycle engine, is very similar to a jet engine. In a jet engine, air is sucked in by the turbine. The engine then compress the air, which combine with a fuel, and burns the product which expands and provide force.

The Engine of the Air-Breathing Rocket Lift-off