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Walter Minor Engine
Country of origin: Czechoslovakia
Built: Prague, Czechoslovakia, c. 1950
Manufacturer: Walter Aircraft Engines
Engine: 65hp (48.5 kW) four-cylinder air-cooled piston engine
Type: Piston engine
Note: Used in Rotorcraft / Cierva Grasshopper helicopter
de Havilland Gipsy Major Engine
Country of origin: UK
Built: Leavesden, Herts, England, c. 1958
Manufacturer: de Havilland Engine Company
Engine: 200 hp (149 kW) four-cylinder, air-cooled, inverted inline engine.
Type: Piston engine
Note: Used in Tiger Moth biplanes and Saunders-Roe Skeeter helicopters
Lycoming TVO-435 Engine
Country of origin: USA
Built: Williamsport Pennsylvania, USA, c. 1965
Manufacturer: Lycoming Engines
Engine: 212 hp (158 kW) six-cylinder horizontally-opposed piston engine
Type: Turbocharged piston engine
Note: Used in Bell 47 helicopters
Turbomeca Artouste Engine
Country of origin: UK
Built: Leavesden, Herts, England, c. 1958
Manufacturer: Turbomeca / Bristol Siddeley Engines
Engine: 400 shp (300 kW) turboshaft engine with 3-stage turbine
Type: Turboshaft engine
Note: Used in Sud Aviation / Aerospatiale Alouette helicopters
Napier Gazelle Engine
Country of origin: UK
Built: Acton, Middlesex, England, c. 1961
Manufacturer: Napier Aero Engines
Engine: 1,650 shp (1,230 kW) two-stage gas powered turbine + 1-stage free power turbine
Type: Turboshaft engine
Note: Used in Bristol Belvedere and early marks of Westland Wessex Helicopters
Turbomeca / Bristol Siddeley Nimbus Engine
Country of origin: UK
Built: Leavesden, Herts, England, c. 1958
Manufacturer: Turbomeca / Bristol Siddeley Engines
Engine: 968 shp (722kW) two-stage axial gas generator, single-stage power
Type: Turboshaft engine
Note: Used in Saunders Roe / Westland Scout and Wasp helicopters.
de Havilland Gnome Engine
Country of origin: UK
Built: Leavesden, Herts, England, c. 1960
Manufacturer: de Havilland / Bristol Siddeley Engines
Engine: 1,500 shp (1,119 kW) Dual-stage compressor turbine, and one-stage free power turbine
Type: Turboshaft engine
Note: Used in later Westland Whirlwinds, later marks of Wessex and in Sea King helicopters
Rolls-Royce Gem Engine
Country of origin: UK
Built: Leavesden, Herts, England, c. 1974
Manufacturer: Rolls Royce Engines
Engine: 1,000 shp (746 kW) 4-stage axial LP, single-stage centrifugal HP, and 2-stage power turbine
Type: Turboshaft engine
Note: Used in Westland Lynx helicopters
Turbomeca Turmo Engine
Country of origin: UK
Built: Leavesden, Herts, England, c. 1972
Manufacturer: Turbomeca / Rolls Royce Engines
Engine: 1,575 hp (1,175 kW) Single-stage axial centrifugal two-stage compressor, and two-stage power turbine
Type: Turboshaft engine
Note: Used in Super Felon and Puma helicopters
General Electric CT7-6 Engine
Country of origin: USA
Built: Evendale, Ohio, USA, c. 1988
Manufacturer: General Electric Aviation
Engine: 1920 shp 5 stage axial, 1 stage centrifugal, 2 stage gas generator and 2 stage power turbine
Type: Turboshaft engine
Note: Used in Westland EH101, Sikorsky Black Hawk, Sea Hawk and Boeing Apache helicopters
Autogyro Engine
Country of origin: Germany
Built: Wolfsburg, Germany, c. 1980
Manufacturer: Volkswagen
Engine: 75hp Volkswagen 4 piston engine
Type: Piston engine
Note: Used in many types of vehicles, light aircraft and autogyros
Rolls-Royce Gem 41 Engine
Country of origin: UK
Built: Leavesden, Herts, England, c. 1980
Manufacturer: Rolls Royce Engines
Engine: 1,135 shp 5 stage axial, 1 stage centrifugal, 2 stage gas generator and 2 stage power turbine
Type: Turboshaft engine
Note: Used in Westland Lynx 3 and WG-30 helicopters