Clerget 9B
| 9B | |
|---|---|
| |
| Preserved Clerget 9B engine on display at the Fleet Air Arm Museum, RNAS Yeovilton. | |
| Type | Rotary engine |
| National origin | France |
| Manufacturer | Clerget-Blin |
| First run | 1913 |
| Major applications | Sopwith Camel |
| Number built | 3,650 (British production) |
| Developed into | Bentley BR1 |
The Clerget 9B was a nine-cylinder rotary aircraft engine of the World War I era designed by . Manufactured in both France and Great Britain (Gwynnes Limited), it was used on such aircraft as the Sopwith Camel. The Clerget 9Bf was an increased stroke version.[1]
Variants[]
- Clerget 9B
(1913) 130 hp (97 kW). 1,300 produced by Ruston Proctor & Co Ltd of Lincoln
- Clerget 9Bf
(1915) 140 hp (104 kW). Extended stroke (172 mm (6.75 in)) version, increasing capacity to 17.5 L (1,066.5 cu in). 1,750 produced by Gwynnes Limited and 600 produced by Ruston Proctor.
Applications[]
Clerget 9B[]
- Armstrong Whitworth F.K.10
- Avro 504
- Avro 531
- Bristol M.1
- Cierva C.6
- Cierva C.8
- Fairey Hamble Baby
- FBA Type C
- Nieuport 12
- Nieuport 17bis
- Sopwith Baby
- Sopwith Camel
- Sopwith Scooter
- Sopwith Triplane
- Sopwith 1½ Strutter
Clerget 9Bf[]
Engines on display[]
- A preserved Clerget 9B engine is on public display at the Fleet Air Arm Museum, RNAS Yeovilton.
- A Clerget 9Bf engine is on display at the Powerhouse Museum, Sydney.[2]
- A Clerget 9B is on display at the Pima Air & Space Museum in Arizona.
Operational (Airworthy) Rotary Engines[]
The Shuttleworth Collection based at Old Warden Aerodrome, UK, operate an airworthy late production Sopwith Triplane (G-BOCK)[3] fitted with an original 9B as well as an airworthy late production Sopwith Camel (G-BZSC)[4] fitted with an original long-stroke 9Bf. These aircraft can be seen displaying at home air displays through the summer months.
Specifications (Clerget 9B)[]
General characteristics
- Type: Nine-cylinder air-cooled rotary engine
- Bore: 120 mm (4.72 in)
- Stroke: 160 mm (6.30 in)
- Displacement: 16.29 l (994.08 cu in)
- Length: 920 mm (36.22 in)
- Diameter: 1,020 mm (40.15 in)
- Dry weight: 173 kg (381 lb)
Components
- Valvetrain: Single inlet and exhaust valves operated by pushrods and rockers
- Fuel system: carburettor
- Fuel type: Gasoline mixed with Castor oil lubricant
- Oil system: Castor oil mixed with fuel
- Cooling system: Air-cooled
Performance
- Power output: 97 kW (130 hp) at 1,250 rpm
- Specific power: 0.1308 hp/cu in (5.953 kW/L)
- Compression ratio: 4.56:1
- Specific fuel consumption: 0.564 L/kW/hour(0.74 pt/hp/hour)
- Oil consumption: 0.0686 L/kW/hour (0.09 pt/hp/hour)
- Power-to-weight ratio: 0.563 kW/kg (0.341 hp/lb)
See also[]
Related development
Comparable engines
Related lists
References[]
 |
Wikimedia Commons has media related to Clerget 9B. |
Notes[]
- ^ a b Lumsden 2003, p. 133.
- ^ Powerhouse Museum - Clerget 9Bf Retrieved: 12 November 2010.
- ^ The Shuttleworth Collection - Sopwith Triplane Retrieved: 21 August 2018
- ^ The Shuttleworth Collection - Sopwith Camel Retrieved: 21 August 2018
- ^ Grey, C.G. (1969). Jane's All the World's Aircraft 1919 (Facsimile ed.). David & Charles (Publishing) Limited. pp. 1b to 145b. ISBN 978-0-7153-4647-1.
Bibliography[]
- Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 978-1-85260-163-8
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 978-1-85310-294-3.
- Grey, C.G. (1969). Jane's All the World's Aircraft 1919 (Facsimile ed.). David & Charles (Publishing) Limited. pp. 1b to 145b. ISBN 978-0-7153-4647-1.
- Air-cooled aircraft piston engines
- 1910s aircraft piston engines
- Clerget aircraft engines
- Rotary aircraft piston engines