ADC Nimbus

The ADC Nimbus was a British inline aero engine that first ran in 1926. The Nimbus was developed from the Siddeley Puma aero engine by Frank Halford of the Aircraft Disposal Company, the goal was to develop the Puma to produce its intended power output which Halford eventually achieved. The Nimbus was further developed into an air-cooled version known as the ADC Airsix which did not enter production and was not flown.[1]

Nimbus
Type Liquid-cooled inline piston engine
National origin United Kingdom
Manufacturer Aircraft Disposal Company
First run 1926
Major applications Airco DH.9
Vickers Vendace
Developed from Siddeley Puma

Applications

Specifications (Nimbus)

Data from Lumsden [2]

General characteristics

  • Type: Six-cylinder, inline, liquid-cooled, upright piston engine
  • Bore: 6.0 in (152 mm)
  • Stroke: 7.5 in (190 mm)
  • Displacement: 1,150.3 cu in (18.85 L)
  • Length: 70 in (1,778 mm)
  • Width: 17.5 in (444 mm)
  • Height: 44 in (1,118 mm)
  • Dry weight: 670 lb (304 kg)
  • Designer: Frank Halford

Components

  • Valvetrain: 1 inlet and 2 exhaust valve per cylinder
  • Fuel system: Carburettor
  • Fuel type: 74 octane
  • Cooling system: Air-cooled
  • Reduction gear: Direct drive, right hand tractor

Performance

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See also

Related development

Comparable engines

Related lists

References

Notes
  1. Lumsden 2003, p. 55.
  2. Lumsden 2003, p.276.

Bibliography
  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
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