Article on other languages:
- For the 1940s engine, see Rolls-Royce Eagle (1944)
| Eagle | |
|---|---|
 |
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| Rolls-Royce Eagle VIII at the Canada Aviation Museum | |
| Type | Piston V-12 aero-engine |
| Manufacturer | Rolls-Royce Limited |
| First run | February 1915 |
| Major applications | Airco D.H.4 Vickers Vimy |
| Number built | 4,681 |
| Developed into | Rolls-Royce Falcon |
The Rolls-Royce Eagle was an aero-engine developed during the First World War by Rolls-Royce that was used to power a number of military aircraft.
Contents |
Design and development
The design was a liquid cooled V12 engine with the cylinders inclined at 60 degrees and the valves driven by overhead camshafts. It first ran in 1915. Bore and stroke were 4.5 inches by 6.5 inches (115 x 165 mm) giving a 20 litre capacity. The whole engine weighed 900 lb (408 kg) producing 360 hp (268 kW) at 1800 rpm.
Production ran until 1928 by which point 4,681 had been built.[1]
There is an example of this engine in the Science Museum, London.
Applications
- Airco D.H.4
- Fairey Campania
- Felixstowe F2A
- Handley Page 0/100
- Handley Page V/1500
- Handley Page Type W
- Short Bomber
- Vickers Vimy
- Wight Converted Seaplane
Specifications (Eagle IX)
Data from: Lumsden[2]
General characteristics
- Type: 12-cylinder liquid-cooled 60° Vee aircraft piston engine
- Bore: 4.5 in (115 mm)
- Stroke: 6.5 in (165 mm)
- Displacement: 1,239 in³ (20.32 L)
- Length: 72.6 in (1844 mm)
- Width: 42.6 in (1082 mm)
- Height: 46.4 in (1178 mm)
- Dry weight: 900 lb (408 kg)
Components
- Valvetrain: Overhead camshafts
- Fuel system: Twin Claudel-Hobson carburettors
- Cooling system: Liquid-cooled
Performance
- Power output: 360 hp (268 kW) at 1,800 rpm
- Specific power: 0.32 hp/in³ (13.4 kW/L)
- Compression ratio: 5.22:1
- Fuel consumption: 24 gallons per hour (90 Litres per hour)
- Power-to-weight ratio: 0.40 hp/lb (0.66 kW/kg)
See also
- Rolls-Royce Hawk - half an Eagle
- Rolls-Royce Condor - an upscaled Eagle
- List of aircraft engines
References
Notes
Bibliography
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
- Rubbra, A.A.Rolls-Royce Piston Aero Engines - A Designer Remembers. Rolls-Royce Heritage Trust. Historical Series no 16. ISBN 1-872922-00-7]
External links
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Wikimedia Commons has media related to: Rolls-Royce Eagle |
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