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De Havilland Gipsy Twelve

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De Havilland Gipsy Twelve httpsuploadwikimediaorgwikipediacommonsthu

The de Havilland Gipsy Twelve was a British aero engine developed by the de Havilland Engine Company in 1937. Approximately 95 were manufactured. It was known as the Gipsy King in Royal Air Force service.

Contents

Applications

  • de Havilland DH.91 Albatross
  • de Havilland DH.93 Don

    • Engines on display

    Preserved de Havilland Gipsy Twelve engines are on public display at the following museums:

  • de Havilland Aircraft Heritage Centre
  • London Science Museum.

    • Specifications (Gipsy King I)

    Data from Lumsden

    General characteristics

  • Type: Inverted 60 degree V-12 inline piston engine
  • Bore: 4.646 in (118 mm)
  • Stroke: 5.512 in (140 mm)
  • Displacement: 1121.3 cu in (18.3 L)
  • Length: 82.6 in (2,098 mm)
  • Width: 31.5 in (800 mm)
  • Height: 37.4 in (950 mm)
  • Dry weight: 1,058 lb (480 kg)

    • Components

  • Valvetrain: Overhead valve
  • Supercharger: Single speed
  • Fuel type: 87 Octane petrol
  • Cooling system: Air cooled
  • Reduction gear: Spur geared, reduction ratio 0.667:1

    • Performance

  • Power output: 425 hp at 2,450 rpm at 0 psi boost (five minutes maximum)
  • Compression ratio: 6:1
  • Power-to-weight ratio: 0.4 hp/lb

    • References

    De Havilland Gipsy Twelve Wikipedia
    (Text) CC BY-SA


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