| 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
[edit]- 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
[edit]
- Avia BH-2
- Avro Avis
- Beardmore Wee Bee
- Bristol Brownie
- Cranwell CLA.2
- Cranwell CLA.3
- Cranwell CLA.4
- Dart Pup
- Everson Evo III
- Granger Archaeopteryx
- Halton Mayfly
- Halton Minus
- Hawker Cygnet
- Johnson Twin 60
- Lippisch Delta 1
- Messerschmitt M17
- Meyers Midget
- Mignet HM.14 Pou-du-Ciel
- Parnall Pixie
- Pander DB two Pices
- Powell Racer
- RAE Scarab
- RAE Hurricane
- Short Cockle
- Short Satellite
- Stout Amphibian
- Supermarine Sparrow
- Vickers Vagabond
- Westland Woodpigeon
- Westland-Hill Pterodactyl
Survivors
[edit]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
[edit]A preserved Bristol Cherub is on static display at the Shuttleworth Collection, Old Warden, Bedfordshire.
Specifications (Cherub III)
[edit]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
- Power output: 36 hp (24 kW) at 3,200 rpm
- Compression ratio: 5.75:1
- Fuel consumption: 2.5 imp. gallons per hour
- Power-to-weight ratio: 0.36 hp/lb
See also
[edit]Comparable engines
Related lists
References
[edit]Notes
[edit]- ^ Guttery 1969, p.80.
- ^ Lumsden 2003, p.101.
- ^ EADS - Messerschmitt M17[permanent dead link] Retrieved: 9 August 2009
- ^ Lumsden 2003, p.102.
Bibliography
[edit]- 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.
External links
[edit]
Wikimedia Commons has media related to Bristol Cherub.