napier gazelle helicopter engine
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.
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
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