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Armstrong Siddeley Leopard was a British 14-cylinder twin-row air-cooled radial aero engine developed in 1927 by Armstrong Siddeley. It was the most powerful radial engine in the world when introduced. [1 ]
Variants [ edit ]
700 hp, medium supercharged. Direct drive propeller.
700 hp, geared epicyclic drive.
800 hp, two-valve cylinder head, direct drive.
800 hp, geared epicyclic drive.
Applications [ edit ]
Specifications (Leopard I) [ edit ]
Data from [3 ]
Type: 14-cylinder twin-row air-cooled radial engine
Bore: 6.0 in (152.4 mm)
Stroke: 7.5 in (190.5 mm)
Displacement: 2,970 cu in (48.6 L)
Length: 60.85 in (1546 mm)
Diameter: 58 in (1473 mm)
Dry weight: 1,466 lb (665 kg)
Overhead valve, four valves per cylinder Valvetrain:
Fuel type: Petrol
Cooling system: Air-cooled
See also [ edit ]
References [ edit ]
^ Smith 1981, p.112.
^ Single engine version only
^ Lumsden 2003, p.69.
Bibliography [ edit ]
Aircraft Piston Engines. New York, New York: McGraw-Hill, 1981. ISBN 0-07-058472-9.
British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.