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Engine Noise Supression

  •  Aircraft powered by gas turbine engines sometimes require noise suppression for the engine exhaust gases when operating from airports located in or near highly populated areas.
  • Several types of noise suppressors are used.
  • A common type of noise suppressor is an integral, airborne part of the aircraft engine installation or engine exhaust nozzle.
  •  Engine noise comes from several sources on the engine, the fan, or compressor, and the air discharge from the core of the engine.
  • There are three sources of noise involved in the operation of a gas turbine engine.
  • The engine air intake and vibration from the engine housing are sources of some noise, but the noise generated does not compare in magnitude with that produced by the engine exhaust.

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