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gas turbine - translation to ελληνικό
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![Boeing Jetfoil 929-100-007 ''Urzela'' of [[TurboJET]]](https://commons.wikimedia.org/wiki/Special:FilePath/20091105-TurboJET Urzela.jpg?width=200 "Boeing Jetfoil 929-100-007 ''Urzela'' of [[TurboJET]]")
![Marines from 1st Tank Battalion load a [[Honeywell AGT1500]] multi-fuel turbine back into an M1 Abrams tank at Camp Coyote, Kuwait, February 2003](https://commons.wikimedia.org/wiki/Special:FilePath/AGT1500 engine and M1 tank.JPEG?width=200 "Marines from 1st Tank Battalion load a [[Honeywell AGT1500]] multi-fuel turbine back into an M1 Abrams tank at Camp Coyote, Kuwait, February 2003")
![The [[Brayton cycle]]](https://commons.wikimedia.org/wiki/Special:FilePath/Brayton cycle.svg?width=200 "The [[Brayton cycle]]")
![GM Firebird I]]](https://commons.wikimedia.org/wiki/Special:FilePath/FirebirdI.jpg?width=200 "GM Firebird I]]")
![GE H series power generation gas turbine: in [[combined cycle]] configuration, its highest [[thermodynamic efficiency]] is 62.22%](https://commons.wikimedia.org/wiki/Special:FilePath/GE H series Gas Turbine.jpg?width=200 "GE H series power generation gas turbine: in [[combined cycle]] configuration, its highest [[thermodynamic efficiency]] is 62.22%")
![gas-fired power station]] in California, uses two GE 7F.04 combustion turbines to burn [[natural gas]].](https://commons.wikimedia.org/wiki/Special:FilePath/Gateway Generating Station rectified.jpg?width=200 "gas-fired power station]] in California, uses two GE 7F.04 combustion turbines to burn [[natural gas]].")
![An LM6000 in an electrical [[power plant]] application](https://commons.wikimedia.org/wiki/Special:FilePath/General Electric LM6000.jpg?width=200 "An LM6000 in an electrical [[power plant]] application")
![A 1968 [[Howmet TX]], the only turbine-powered race car to have won a race](https://commons.wikimedia.org/wiki/Special:FilePath/Howmet TX Daytona.jpg?width=200 "A 1968 [[Howmet TX]], the only turbine-powered race car to have won a race")
![J85]], sectioned for display. Flow is left to right, multistage compressor on left, combustion chambers center, two-stage turbine on right](https://commons.wikimedia.org/wiki/Special:FilePath/J85 ge 17a turbojet engine.jpg?width=200 "J85]], sectioned for display. Flow is left to right, multistage compressor on left, combustion chambers center, two-stage turbine on right")
![[[MAZ-7907]], a [[transporter erector launcher]] with a [[turbine-electric transmission]]](https://commons.wikimedia.org/wiki/Special:FilePath/MZKT open day 2019 p06.jpg?width=200 "[[MAZ-7907]], a [[transporter erector launcher]] with a [[turbine-electric transmission]]")
![Rover]] JET1](https://commons.wikimedia.org/wiki/Special:FilePath/Rover.jet1.jpg?width=200 "Rover]] JET1")
![The 1967 ''STP Oil Treatment Special'' on display at the [[Indianapolis Motor Speedway]] Hall of Fame Museum, with the [[Pratt & Whitney]] gas turbine shown](https://commons.wikimedia.org/wiki/Special:FilePath/STP Turbine.jpg?width=200 "The 1967 ''STP Oil Treatment Special'' on display at the [[Indianapolis Motor Speedway]] Hall of Fame Museum, with the [[Pratt & Whitney]] gas turbine shown")
 Gas Turbine.jpg?width=200 "6}}")
![blue]] [[flame]] colour, meaning complete combustion, as with other gas appliances.](https://commons.wikimedia.org/wiki/Special:FilePath/Gas oven flame.jpg?width=200 "blue]] [[flame]] colour, meaning complete combustion, as with other gas appliances.")
![Early gas stoves produced by Windsor. From ''[[Mrs Beeton's Book of Household Management]]'', 1904.](https://commons.wikimedia.org/wiki/Special:FilePath/Gas stove 1851.jpg?width=200 "Early gas stoves produced by Windsor. From ''[[Mrs Beeton's Book of Household Management]]'', 1904.")
.jpg?width=200 "A built-in Japanese three burner gas stove with a fish grill. Note the thermistor buttons protruding from the gas burners, which cut off the flame if the temperature exceeds 250{{nbsp}}°C.")
![Langen]] gas engine 1867.](https://commons.wikimedia.org/wiki/Special:FilePath/Enginy Otto-langen 1867.jpg?width=200 "Langen]] gas engine 1867.")
.jpg?width=200 "1905 National company's ordinary gas engine of 36 hp")
.jpg?width=200 "1903 Körting gas engine")
.jpg?width=200 "Backus upright gas engine")
.jpg?width=200 "Otto horizontal gas engine")
.jpg?width=200 "Otto vertical gas engine")
.jpg?width=200 "Westinghouse gas engine")
.jpg?width=200 "Crossley gas engine and dynamo")
.jpg?width=200 "Premier twin gas engine electric generating plant")
.jpg?width=200 "125 hp gas engine and dynamo")
.jpg?width=200 "Premier tandem scavenging high-power gas engine")
.jpg?width=200 "Blast furnace gas engine with blowing cylinder")
.jpg?width=200 "Stockport gas engine and belt-driven dynamo")
Ορισμός
Βικιπαίδεια
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A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the direction of flow:
- a rotating gas compressor
- a combustor
- a compressor-driving turbine.
Additional components have to be added to the gas generator to suit its application. Common to all is an air inlet but with different configurations to suit the requirements of marine use, land use or flight at speeds varying from stationary to supersonic. A propelling nozzle is added to produce thrust for flight. An extra turbine is added to drive a propeller (turboprop) or ducted fan (turbofan) to reduce fuel consumption (by increasing propulsive efficiency) at subsonic flight speeds. An extra turbine is also required to drive a helicopter rotor or land-vehicle transmission (turboshaft), marine propeller or electrical generator (power turbine). Greater thrust-to-weight ratio for flight is achieved with the addition of an afterburner.
The basic operation of the gas turbine is a Brayton cycle with air as the working fluid: atmospheric air flows through the compressor that brings it to higher pressure; energy is then added by spraying fuel into the air and igniting it so that the combustion generates a high-temperature flow; this high-temperature pressurized gas enters a turbine, producing a shaft work output in the process, used to drive the compressor; the unused energy comes out in the exhaust gases that can be repurposed for external work, such as directly producing thrust in a turbojet engine, or rotating a second, independent turbine (known as a power turbine) that can be connected to a fan, propeller, or electrical generator. The purpose of the gas turbine determines the design so that the most desirable split of energy between the thrust and the shaft work is achieved. The fourth step of the Brayton cycle (cooling of the working fluid) is omitted, as gas turbines are open systems that do not reuse the same air.
Gas turbines are used to power aircraft, trains, ships, electrical generators, pumps, gas compressors, and tanks.
