Armstrong Siddeley Cougar

Template:Infobox Aircraft Engine

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.

General characteristics

• Type: 9-cylinder single-row air-cooled radial engine
• Bore:
• Stroke:
• Displacement:
• Length:
• Diameter:
• Dry weight:

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 petrol
• Oil system: Pressure fed at , dry sump.
• Cooling system: Air-cooled

Performance

• Power output:
  
• (Take-off) at 2,800 rpm at 46.0 inHg / +8.0Lb boost for 15 minutes
• (Maximum) at 2,700 rpm at
• (Normal) at 2,500 rpm at
• (Cruising) at 2,300 pm at
• Specific power: 0.76 hp/(cu in) (34.6 kW/L)
• Compression ratio: 6.3:1
• Specific fuel consumption: 0.46 lb/(hp h) (0.011 kg/(kW h))
• Oil consumption: 0.012 lb/(hp h) (0.005 kg/(kW h))
• Power-to-weight ratio: 0.83 hp/lb (1.37 kW/kg)

See also

Related lists

• List of aircraft engines