Special Terms. Gas Turbine Engine:An internal combustion engine in which combustion drives a turbine with blades similar to those of a steam turbine

Gas Turbine Engine: An internal combustion engine in which combustion drives a turbine with blades similar to those of a steam turbine.

Turboprop Engine: A gas turbine engine in which the turbine drives a shaft that turns a propeller.

Turbojet Engine: An engine in which gases pass through a turbine and are expelled from the rear of the engine; this thrust pushes the machine forward. Also known as a jet.

Blower: Adevice for the intake and compression of air in gas turbine and some kinds of jet engines.

Fanjet Engine: The common type of jet engine in commercial aircraft; the blower is a complex version of an electric fan.

Pulsejet Engine: A jet engine with an air intake using lateral valves that pulse or vibrate.

Ramjet Engine: Ajet engine in which air is forced in under extremely high pressure.

Petrochemical Products: Products made from petroleum by chemical processes, including some kinds of plastics.

Nuclear Fission: The splitting or fusion of the nucleus, the central part of an atom; a result of the fusion is energy.

Nuclear Fusion: The joining or fusion of the nuclei of different atoms; a result of the process is release of a great deal of energy.

Hot-air Engine: An engine using heated air to push down a piston also known as the Stirling engine.

Rotary Engine: An internal combustion engine producing rotary in­stead of reciprocating motion; the best known type is called the Wankel engine after its inventor.

Rotor: A machine component which revolves, thereby producing rotary motion.