Basic ideas of aircraft Engines An aircraft engine is the component of the propulsion system for an a/c that generates power. Aircraft engines are almost always either lightweight piston engines or gas turbine engines.

Aircraft piston engines

Radial Engines Rotary Engines

Turbo prop & Turbo shaft

Turbojet & Turbofan

Use of Propeller

Forces on propeller

Jet Engine and Thrust Production

Principle of Operation of Rockets A rocket  is a missile, spacecraft, aircraft or other vehicle that obtains thrust  from a rocket engine. Rocket engine exhaust is formed entirely from propellant carried within the rocket before use. Rocket engines work by action and reaction. Rocket engines push rockets forward by expelling their exhaust in the opposite direction at high speed. Rockets rely on momentum, airfoils, auxillary reaction engines , gimballed thrust, momentum wheels, deflection of the exhaust stream, propellant flow, spin, and/or gravity to help control flight.

Types of Rockets

Exploration into space