Rolls-Royce Exe
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| Exe | |
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| Type | Piston X-24 aero-engine |
| Manufacturer | Rolls-Royce Limited |
| First run | 1936 |
| Major applications | Fairey Battle |
The Rolls-Royce Exe, or Boreas,[1] was a 24-cylinder X block sleeve valve aircraft engine intended primarily for the new Fairey Fleet Air Arm aircraft, particularly the Fairey Barracuda. The Exe was under development in 1939, having been started in the 1930s, along with the Peregrine and Vulture.
Work on the Exe was suspended in August 1939,[2] and stopped about August 1940.[3] In August 1940 Hives wanted to stop work on the Peregrine, Exe and Vulture to concentrate on the Merlin and Griffon engines.
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[edit] Applications
Originally intended for the Fairey Barracuda the Exe was only test flown in a Fairey Battle, the first flight taking place on 30 November 1938. This aircraft continued in use for some time as a communications aircraft where the Exe was noted to be quite reliable in service.[4]
[edit] Specifications (Exe)
Data from Lumsden [5]
General characteristics
- Type: 24-cylinder supercharged air-cooled 90 degree X layout aircraft piston engine
- Bore: 4.2 in (101.6 mm)
- Stroke: 4.0 in (106.7 mm)
- Displacement: 1,348 in³ (22.1 L)
- Dry weight: 1,530 lb (694 kg)
Components
- Valvetrain: Sleeve valve
- Supercharger: Gear-driven centrifugal type supercharger, single stage
- Fuel type: Petrol
- Cooling system: Pressure air-cooled
Performance
- Power output: 1,150 hp at 4,200 rpm, +4.5 psi boost at sea level
- Compression ratio: 8:1
- Power-to-weight ratio: 0.75 hp/lb
[edit] See also
Related development
Comparable engines
Related lists
[edit] References
[edit] Notes
[edit] Bibliography
- Lloyd, Ian Rolls-Royce: The Merlin at War (1978, Macmillan London) ISBN 0333 240162
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
- Pugh, Peter.The Magic of a Name: The Rolls-Royce Story, The first 40 Years (2000, Icon Books Cambridge) ISBN 1 84046 151 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
[edit] External links
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