A gas turbine engine is an air-dependent, thermal jet propulsion
device that uses exhaust-gas-driven turbine wheels to drive a
compressor, making continuous operation of the engine possible.
Although the gas turbine engine differs radically in
construction from the conventional four-stroke, five-event cycle
reciprocating engine, both operate on the same principle. In the
piston (reciprocating) engine, the functions of intake,
compression, combustion, and exhaust all take place in the same
combustion chamber therefore, each must completely occupy the
chamber during its respective part of the combustion cycle. In
the gas turbine engine, a separate section is devoted to each
function; all functions are performed at the same time without
interruption. These sections are the air-inlet section the
compressor section, the combustion section, and a turbine and
exhaust section. The compressor brings in compresses, and forces
air into the combustion section. Fuel is then injected into the
combustion area, where it mixe