Engine

Engine is mechanical device that converted force into motion. In most cases the work is supplied by exerting the torque, which is used to operate other machinery, generate electricity, pump water or compressed gases. Types of internal combustion engine include reciprocating engine, gas turbine, jet engine, turbo propeller engine, pulse jet, pulse detonation engine ,hot bulb engine, diesel engine, gasoline engine. Internal Combustion Engine is air breathing engine that use the oxygen in atmospheric air to burn the fuel carried rather than carrying an oxidiser as in rocket. Theoretically, this should result in a better spesific impulse than for rocket engine.