Longman Dictionary of Contemporary English
alt. An internal combustion engine consisting of a compressor, a combustion chamber and a turbine, where the turbine mechanically powers the compressor. n. An internal combustion engine consisting of a compressor, a combustion chamber and a turbine, where the turbine mechanically powers the compressor.
n. 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 turbine
The basic operation of the gas turbine is similar to that of the steam power plant except that air is used instead of water. Fresh atmospheric air flows through a compressor that brings it to higher pressure. Energy is then added by spraying fuel into the air and igniting it so the combustion generates a high-temperature flow. This high-temperature high-pressure gas enters a turbine, where it expands down to the exhaust pressure, producing a shaft work output in the process. The turbine shaft work is used to drive the compressor and other devices such as an electric generator that may be coupled to the shaft. The energy that is not used for shaft work comes out in the exhaust gases, so these have either a high temperature or a high velocity. The purpose of the gas turbine determines the design so that the most desirable energy form is maximized. Gas turbines are used to power aircraft, trains, ships, electrical generators, and tanks.
Usage examples of "gas turbine".
When they develop that film spool they'll find it contains micro photos - about a hundred - of line drawings of a prototype gas turbine engine.
Launched in the late 1990s, the vessel displaces forty-two hundred tons and features two gas turbine engines rated at 45,000 horsepower.
As the mooring lines were slackened off, the wind and the auxiliary power units located on the hull directly under the bridge pushed James's bow into the clear, then the gas turbine engines moved her forward into the channel.
Launched in the late 1990s, the vesseldisplaces forty-two hundred tons and features two gas turbine enginesrated at 45,000 horsepower.
All were either gas turbine or diesel engine driven, steam plants having long given way to more efficient means of propulsion.
The gas turbine ships required only five minutes to light off, while the diesels took slightly longer.
He walked around the shiny, compact gas turbine and its connected generator, and over to the control panel.
Two of her powerful gas turbine engines were disabled by the blast, and she lost steering control.
One was probably the auxiliary power unit, the gas turbine in the rear of the fuselage which provided power when the plane was on the ground, and backup power in the event of electrical failure during flight.