Armstrong Siddeley Leopard

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The Armstrong Siddeley Leopard is an aircraft engine that the British manufacturer Armstrong Siddeley built from 1927. The two-row 14-cylinder radial engine has a displacement of 48,670 cm³. When it was first introduced, it was the world's most powerful radial engine for aviation.

variants

Leopard i
700 bhp (522 kW), four valve cylinder head, medium pressure compressor, direct drive.
Leopard II
700 bhp (522 kW), like Leopard I, but with a reduction gear.
Leopard III
800 bhp (597 kW), two-valve cylinder head, direct drive.
Leopard IIIA
800 bhp (597 kW), like Leopard III, but with a reduction gear.

Aircraft with Armstrong Siddeley Leopard

Data (Leopard I)

General

  • Two-row 14-cylinder radial engine, air-cooled, with compressor
  • Bore: 152.4 mm
  • Stroke: 190.5 mm
  • Displacement: 48,670 cm³
  • Length: 1546 mm
  • Diameter: 1473 mm
  • Weight: 665 kg

Components

  • Valve train: four overhead valves per cylinder
  • Compressor: medium pressure
  • Mixture preparation: carburettor
  • Fuel: gasoline
  • Cooling: air
  • Reduction gear: no

power

  • Power: 700 bhp (522 kW) at 1650 rpm. at a height of 0 m
  • Output per liter: 10.73 kW / l
  • Compression: 5: 1
  • Gasoline consumption: 169 l / h at cruising speed
  • Power-to-weight ratio : 1.274 kg / kW

Individual evidence

  1. ^ Herschel Smith: Aircraft Piston Engines . McGraw-Hill, New York 1981. ISBN 0-07-058472-9 . P. 112.
  2. ^ Alec Lumsden: British Piston Engines and their Aircraft . Airlife Publishing, Marlborough, Wiltshire 2003. ISBN 1-85310-294-6 . P. 69.

literature

  • Alec Lumsden: British Piston Engines and their Aircraft . Airlife Publishing, Marlborough, Wiltshire 2003. ISBN 1-85310-294-6
  • Herschel Smith: Aircraft Piston Engines . McGraw-Hill, New York 1981. ISBN 0-07-058472-9

Web links