Clerget 7Z
World War I–era rotary aircraft engine
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The Clerget 7Z was a seven-cylinder rotary aircraft engine of the World War I era designed by Pierre Clerget. First appearing in 1913 it was nominally rated at 80 horsepower (60 kW). In addition to the 600 engines built in France by Clerget-Blin,[1] 347 examples were built under license in Britain by Gordon Watney & Co Ltd of Weybridge and Gwynnes Limited of Hammersmith.[2]
| 7Z | |
|---|---|
| Type | Rotary engine |
| National origin | France |
| Manufacturer | Clerget-Blin |
| First run | 1913 |
| Major applications | Avro 504 |
| Number built | 600 (French production) 347 (British production) |
| Developed from | Clerget 7Y |
Applications
Specifications (Clerget 7Z)
Data from Lumsden and Gunston.[2][3][4]
General characteristics
- Type: Seven-cylinder air-cooled rotary engine
- Bore: 120 mm (4.72 in)
- Stroke: 150 mm (5.91 in)
- Displacement: 11.88 L (724.96 cu in)
- Diameter: 914 mm (35.98 in)
- Dry weight: 106 kg (234 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: 70.84 kW (95 hp) at 1,300 rpm (maximum power)
- Specific power: 0.1314 hp/cu in (5.98 kW/L)
- Compression ratio: 4.3:1
- Specific fuel consumption: 0.564 L/kW/hour(0.74 pt/hp/hour)
- Oil consumption: 0.0762 L/kW/hour (0.1 pt/hp/hour)
- Power-to-weight ratio: 0.67 kW/kg (0.406 hp/lb)
See also
Comparable engines
Related lists