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Armstrong Siddeley Tiger

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Armstrong 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.

Contents

Applications

  • Armstrong Whitworth A.W.19
  • Armstrong Whitworth AW.23
  • Armstrong Whitworth A.W.29
  • Armstrong Whitworth Ensign
  • Armstrong Whitworth Whitley
  • Blackburn B-6
  • Blackburn B-7
  • Blackburn Shark
  • Blackburn Ripon
  • Fairey G4/31
  • Handley Page H.P.51
  • Short Calcutta

    • Engines on display

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

    Specifications (Tiger VIII)

    Data from Lumsden.

    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

  • Valvetrain: Two pushrod-actuated valves per cylinder
  • Supercharger: Two-speed centrifugal type supercharger, first gear ratio 5.34:1, second gear 7.96:1.
  • Fuel system: Claudel-Hobson carburettor
  • Fuel type: 87 octane rating petrol
  • Cooling system: Air-cooled
  • Reduction gear: Spur, 0.594:1

    • 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)

    • References

    Armstrong Siddeley Tiger Wikipedia
    (Text) CC BY-SA