turbojet engine

n (Aeronautics) a gas turbine in which the exhaust gases provide the propulsive thrust to drive an aircraft

tur′bojet en`gine

n. a jet-propulsion engine in which air is compressed for combustion by a turbine-driven compressor. [1940–45]

Thesaurus

Noun

turbojet engine - a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrustfanjet engine, turbofan engine, turbojet, turbofan, fanjet, fan-jetafterburner - a device injects fuel into a hot exhaust for extra thrustfanjet, fan-jet, turbofan, turbojet - an airplane propelled by a fanjet enginegas turbine - turbine that converts the chemical energy of a liquid fuel into mechanical energy by internal combustion; gaseous products of the fuel (which is burned in compressed air) are expanded through a turbinejet engine - a gas turbine produces a stream of hot gas that propels a jet plane by reaction propulsionpropjet, turboprop, turbo-propeller plane - an airplane with an external propeller that is driven by a turbojet engine

Turbojet Engine

an aircraft gas-turbine engine in which thrust is developed by a gas jet flowing from a jet nozzle. Turbojet engines are used as propulsion engines in supersonic aircraft or as lifting engines in vertical takeoff and landing aircraft.

Atmospheric air that enters a turbojet engine in flight is compressed in an air intake and further compressed in a turbocom-pressor. The compressed air is supplied to a combustion chamber into which a liquid chemical fuel, usually aviation kerosene, is injected. The gases produced during combustion are partially expanded in a turbine, which turns the compressor; the final expansion of the gases occurs in the jet nozzle.

Figure 1. Schematic of a two-spool turbojet engine with an afterburner for supersonic aircraft: (1) air intake, (2) axial-flow compressor, (3) combustion chamber, (4) turbine, (5) afterburner, (6) jet nozzle

The thrust of a turbojet engine may be augmented substantially (about 30–40 percent) by the additional combustion of fuel in an afterburner, which is located between the turbine and the jet nozzle. In order to increase the range of stable operation of the compressor in turbojet engines with and without an afterburner, the engines may be built in a two-spool configuration. In two-spool engines the turbocompressor consists of two tandem sections that are not mechanically connected.

A promising use of turbojet engines is in the first stages of aerospace planes. (See alsoAIRCRAFT ENGINE.)

V. I. BAKULEV

turbojet engine

Related to turbojet engine: turbofan engine, ramjet engine, Turboprop engine, Turboshaft engine

noun

Synonyms for turbojet engine

noun a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust

Synonyms

fanjet engine
turbofan engine
turbojet
turbofan
fanjet
fan-jet

Related Words

afterburner
fanjet
fan-jet
turbofan
turbojet
gas turbine
jet engine
propjet
turboprop
turbo-propeller plane