Armstrong_Siddeley_Tiger

Armstrong Siddeley Tiger

Armstrong Siddeley Tiger

1930s British piston aircraft engine

For the 1920 V12 engine, see Siddeley Tiger.

The Armstrong Siddeley Tiger was a British 14-cylinder air-cooled aircraft radial engine developed by Armstrong Siddeley in the 1930s from their Jaguar engine. The engine was built in a number of different versions but performance and dimensions stayed relatively unchanged. The Tiger VIII was the first British aircraft engine to use a two-speed supercharger.[1][2]

Quick Facts Tiger, Type ...

Applications

Engines on display

A preserved Armstrong Siddeley Tiger is on display at the Science Museum (London).

Specifications (Tiger VIII)

Data from Lumsden.[3]

General characteristics

  • Type: 14-cylinder supercharged two-row air-cooled radial engine
  • Bore: 5.5 in (139.7 mm)
  • Stroke: 6.0 in (152.4 mm)
  • Displacement: 1,995 in³ (32.7 L)
  • Length: 64.6 in (1,641 mm)
  • Diameter: 50.8 in (1,290 mm)
  • Dry weight: 1,287 lb (584 kg)

Components

Performance

  • Power output:
  • 907 hp (677 kW) at 2,375 rpm for takeoff
  • 850 hp (634 kW) at 2,450 rpm at 7,150 ft (2,180 m) – first supercharger gear
  • 771 hp (575 kW) at 2,450 rpm at 16,240 ft (4,950 m) – second supercharger gear
  • 582 hp (434 kW) at 2,200 rpm economy cruise
  • Specific power: 0.45 hp/in³ (20.7 kW/L)
  • Compression ratio: 6.25:1
  • Specific fuel consumption: 0.49 lb/(hp•h) (294 g/(kW•h))
  • Oil consumption: 0.21–0.42 oz/(hp•h) (8–16 g/(kW•h))
  • Power-to-weight ratio: 0.70 hp/lb (1.16 kW/kg)

See also

Related development

Related lists

References

Notes

  1. [1]
    Lumsden 2003, p.78.
  2. [2]
    Gunston 1989, p.18.
  3. [3]
    Lumsden 2003, p.79.

Bibliography

  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
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