Clerget 11Eb

The Clerget 11Eb was an 11-cylinder rotary aircraft engine of the World War I era designed by Pierre Clerget. Powering Sopwith types it was nominally rated at 200 horsepower (150 kW).[2]

11Eb
Type	Rotary engine
National origin	France
Manufacturer	Clerget-Blin
First run	1918
Major applications	Sopwith Bulldog
Unit cost	£1,663 (1918)[1]

Applications

• Sopwith Bulldog
• Sopwith Hippo
• Sopwith Salamander

Specifications (Clerget 11Eb)

Data from Lumsden.[2][3]

General characteristics

• Type: 11-cylinder air-cooled rotary engine
• Bore: 120 mm (4.72 in)
• Stroke: 190 mm (7.48 in)
• Displacement: 21.49 l (1,311.40 cu in)
• Dry weight: 232 kg (511 lb)

Components

• Valvetrain: 1 each overhead inlet and exhaust valves operated by pushrods and rockers
• Fuel system: Bloctube carburettor
• Fuel type: Gasoline with Castor oil lubricant
• Oil system: Castor oil mixed with fuel
• Cooling system: Air-cooled

Performance

• Power output: 160.33 kW (215 hp) at 1,300 rpm (maximum power)
• Specific power: 0.1639 hp/cu in (7.46 kW/l)
• Compression ratio: 5.1:1
• Specific fuel consumption: 0.518 l/kW/hour (0.68pt/hp/hour)
• Oil consumption: 0.0838 l/kW/hour (0.11 pt/hp/hour)
• Power-to-weight ratio: 0.694 kW/kg (0.421 hp/lb)

See also

• Clerget aircraft engines

Comparable engines

• Gnome Monosoupape
• Le Rhône

Related lists

• List of aircraft engines

References

Notes

1. Gunston 1989, p. 41.
2. Lumsden 2003, p. 134.
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.

Bibliography

• Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
• Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
• 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.