How a jet engine on a jet plane works?

A jet engine works basically the same as any engine. It compresses air, then injects fuel and ignites it with the result that the fuel/air burns and expands which produces work.

Air is brought in the engine and turning blades compress the air and pushes it further back. When it gets to the combustion chamber, fuel is injected and the gas is ignited. The fuel/air burns and expands and flows faster out the back. As it does, it turns the turbine blades which are connected by a shaft to the front blades and keeps the engine turning.