Rolls-Royce Pennine
The Rolls-Royce Pennine was a British 46-litre air-cooled sleeve valve engine with 24 cylinders arranged in an X formation. It was an enlarged version of the 22-litre Exe; a prototype engine was built and tested, but never flew.[1] The project was terminated in 1945, being superseded by the jet engine.[2]
Specifications (Pennine)
General characteristics
- Type: 24-cylinder supercharged liquid-cooled 90 degree X layout aircraft piston engine
- Bore: 5.4 in (137.1 mm)
- Stroke: 5.0 in (127 mm)
- Displacement: 2,791 in³ (45.73 L)
- Length: 106 in (2692 mm)
- Width: 39 in (991 mm)
- Height: 37.5 in (952 mm)
- Dry weight: 2,850 lb (1,293 kg)
Components
Performance
- Power output: 2,740 hp (2,043 kW) at 3,500 rpm, +12 psi boost at sea level
- Power-to-weight ratio: 0.96 hp/lb (1.58 kW/kg)
See also
- Related development
- Comparable engines
- Related lists
References
Notes
- ^ Rubbra 1990, p.148.
- ^ Gunston 1989, p.142.
Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
- Rubbra, A.A. Rolls-Royce Piston Aero Engines - a designer remembers: Historical Series no 16 :Rolls Royce Heritage Trust, 1990. ISBN 1-87292-200-7
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