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Bristol Cherub

From Wikipedia, the free encyclopedia

Cherub
Preserved Bristol Cherub engine
Type Piston aircraft engine
Manufacturer Bristol Aeroplane Company
First run 1923
Major applications Bristol Brownie
Hawker Cygnet

The Bristol Cherub is a British two-cylinder, air-cooled, aircraft engine designed and built by the Bristol Aeroplane Company. Introduced in 1923 it was a popular engine for ultralight and small aircraft in the 1930s.[1]

Variants

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Cherub I
Initial direct drive version introduced in 1923. Bore and stroke of 3.35 by 3.8 inches (85 mm × 97 mm) for a displacement of 67 cu in (1.095 L). 32 horsepower (24 kW) at 2,500 rpm.[2]
Cherub II
Geared down (2:1) version of the Cherub I.
Cherub III
An improved and slightly larger (1.228 L) direct drive version introduced in 1925.

Applications

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Cherub-powered Short Satellite

Survivors

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An airworthy Messerschmitt M17 replica is owned and operated by the EADS Heritage Flight at Manching and is powered by an original Bristol Cherub III.[3]

Engines on display

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A preserved Bristol Cherub is on static display at the Shuttleworth Collection, Old Warden, Bedfordshire.

Specifications (Cherub III)

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Data from Lumsden.[4]

General characteristics

  • Type: 2-cylinder air-cooled, horizontally opposed, left-hand tractor
  • Bore: 3.54 in (90 mm)
  • Stroke: 3.8 in (96.5 mm)
  • Displacement: 75 in³ (1.228 L)
  • Width: 25.6 in (650 mm)
  • Dry weight: 98 lb (39.5 kg)

Components

  • Valvetrain: Overhead valve
  • Oil system: Dry sump
  • Cooling system: Air-cooled

Performance

See also

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Comparable engines

Related lists

References

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Notes

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  1. ^ Guttery 1969, p.80.
  2. ^ Lumsden 2003, p.101.
  3. ^ EADS - Messerschmitt M17[permanent dead link] Retrieved: 9 August 2009
  4. ^ Lumsden 2003, p.102.

Bibliography

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  • Guttery, T.E. The Shuttleworth Collection. London: Wm. Carling & Co, 1969. ISBN 0-901319-01-5
  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
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