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Combustor

Combustor on Rolls-Royce Nene turbojet

A combustor is a part or area of a gas turbine, ramjet, or scramjet engine where combustion takes place. It is also known as a burner, combustion chamber or flame holder. In a gas turbine engine, the combustor or combustion chamber is fed high pressure air by the compression system.[1] The combustor then heats this air at constant pressure.[1] After heating, air passes from the combustor through the vanes to the turbine.[1] In the case of a ramjet or scramjet engines, the air is directly fed to a nozzle.[2]

Components

Combustor Media

  • Combustor diagram componentsPNG

  • Fuel injectors of a swirl-can combustor on a Pratt & Whitney JT9D turbofan

  • Diagram of air flow paths in a gas turbine combustor.

  • Arrangement of can-type combustors for a gas turbine engine, looking axis on, through the exhaust. Teal color (dark cyan) indicates the cooling-air flow path, orange the combustion gas flow path.

  • Cannular combustor for a gas turbine engine, viewing axis on, through the exhaust

  • Annular combustor for a gas turbine engine, viewed axis on looking through the exhaust. The small yellow circles are the fuel injection nozzles, while the larger orange ring is the continuous liner for the combustion zone.

  • Diagram illustrating a scramjet engine. Notice the isolator section between the compression inlet and combustion chamber. (Illustration from The Hy-V Scramjet Flight Experiment.)

References

  1. ↑ 1.0 1.1 1.2 Klaus Hünecke, Jet Engines: Fundamentals of Theory, Design, and Operation (Osceola, WI: Motorbooks International, 1997), pp. 4–6
  2. ↑ E T Curran, 'Scramjet Propulsion', Progress in Aastronautics and Aeronautics, Vol. 189 (2000), p. 5

Other websites

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