Armstrong Siddeley Cougar
| Cougar | |
|---|---|
 | |
| Type | Radial engine |
| National origin | United Kingdom |
| Manufacturer | Armstrong Siddeley |
| First run | 1945 |
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| |
The Armstrong Siddeley Cougar was an aero engine developed by Armstrong Siddeley in 1945. The design was a departure from earlier Armstrong Siddeley engines in many ways, it was the company's only nine-cylinder radial design. Although the engine was tested it did not find an aircraft application and was not produced.
Specifications (Cougar)
Data from Flightglobal Archive.[1][2]
General characteristics
- Type: 9-cylinder single-row air-cooled radial engine
- Bore: 5.5 in (140 mm)
- Stroke: 5.5 in (140 mm)
- Displacement: 1,176 cu in (19 l)
- Length: 51.5 in (1,308 mm)
- Diameter: 49.5 in (1,257 mm)
- Dry weight: 1,020 lb (463 kg)
Components
- Valvetrain: Overhead valve operated by pushrods
- Supercharger: 1 stage gear driven 8.17:1 supercharger
- Fuel system: R.A.E.-Hobson AS/C2 fuel injection to supercharger with automatic boost control
- Fuel type: 100/130 aviation gasoline (D.E.D. 2475)
- Oil system: pressure fed at 80 psi (551,580.58 Pa), dry sump, 100 S.U. (20.5 cs) grade oil (D.
E.D. 2472B)
- Cooling system: Air-cooled
Performance
- Power output:
- (Take-off) 850 hp (634 kW) at 2,800 rpm at 46.0 inHg / +8.0Lb boost for 15 minutes
- (Maximum) 730 hp (544 kW) at 2,700 rpm at 7,500 ft (2,286 m)
- (Normal) 690 hp (515 kW) at 2,500 rpm at 6,000 ft (1,829 m)
- (Cruising) 500 hp (373 kW) at 2,300 rpm at 10,500 ft (3,200 m)
- Specific power: 0.76 hp/cu in (34.6 kW/l)
- Compression ratio: 6.3:1
- Specific fuel consumption: 0.46 lb/hp/hr (0.011 kg/kW/hr)
- Oil consumption: 0.012 lb/hp/hr (0.005 kg/kW/hr)
- Power-to-weight ratio: 0.83 hp/lb (1.362 kW/kg)
See also
- Related lists
References
Notes
- ā Flightglobal archive - January 1946 Retrieved: 19 December 2008
- ā Wilkinson, Paul H. (1946). Aircraft Engines of the World. London: Sir isaac Pitman & Sons Ltd.
Bibliography
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
- Wilkinson, Paul H. (1946). Aircraft Engines of the World. London: Sir isaac Pitman & Sons Ltd.
- Bridgman, Leonard, ed. (1947). Jane's all the World's Aircraft 1947. London: Sampson Low, Marston & Co. pp. 14dā15d.
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