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The Napier Gazelle Aircraft Engine

The Napier Gazelle was an axial flow turbo-shaft engine designed in the early 1950's to replace piston engines in Helicopters. The Napier Gazelle first ran in 1955 and was used in the RAF's Westland Wessex HAS1, Westland Wessex HAS2 and the twin rotor Bristol Belvedere Helicopters. When in 1962 Rolls-Royce acquired Napier Aero Engines Ltd, they decided to cease development of the engine in favour of there own Rolls Royce Gnome engine.

Napier Gazelle Aircraft Engine


Gazelle NGa.1 Specifications:

  • Type: Axial flow turbo-shaft Helicopter engine
  • Length: 70 in
  • Diameter: 33.5 in
  • Dry weight: 780 lb
  • Compressor: 11-stage axial flow
  • Combustors: 6 flame tubes
  • Turbine: 3-stage

Gazelle NGa.1 Performance:

  • Maximum power output: 1,260 shp at 20,400 rpm
  • Specific fuel consumption: 0.708

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    Napier Gazelle Aircraft Engine picture and Specifications


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