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                                    napier gazelle helicopter engine

Picture
The Napier Gazelle was a British designed axial flow turbo shaft engine and manufactured by D Napier and Son in the mid 1950s.
In 1961, production was nominally transferred to a joint venture with Rolls Royce called Napier  Aero Engines Ltd. This venture closed down two years later.

​The Gazelle engine was built in nineteen variants for helicopters, and was mainly used in the Westland Wessex and the twin engine Westland Belvedere machines.

TECHNICAL DATA - Gazelle 501/Mk101
Type                                      Helicopter turboshaft engine
Length                                  70.oin (1,778mm)
Diameter                              33.5in (851mm)
Dry weight                            830lbs (376kg)
Compressor                          Eleven stage axial flow
Combusters                          Six combustion tubes
Power turbine                       Two stage gas generator, plus a one stage free power turbine
Oil system                             Pressure
Fuel                                       AVTUR
Maximum power                 1,650shp @ 3,000 output shaft rpm (2 mins max)
Pressure ratio                        6.25/1
Air mass flow                        16.8lb/sec
Power to weight ratio           1.458shp/lb
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  • Home
  • ABOUT
    • News
    • History
  • Community Engagement
    • Legends of The Skies
  • Birthdays & Functions
  • Our Collection
    • CATEGORIES >
      • ENGINES
      • COMMONWEALTH AIRCRAFT CORPORATION
      • D.A.P / G.A.F.
      • R.A.A.F. / R.A.N. / ARMY
      • COMMERCIAL AIRCRAFT
      • KIT AIRCRAFT
      • OTHER AIRCRAFT
      • GLIDERS
  • membership
  • ONLINE SHOP
  • Support the Museum
    • Donations
    • EMPLOYEE GIVING
    • Our Supporters
  • Getting There
  • Contact