Rolls-Royce Eagle (1944)

The Rolls-Royce Eagle was a 24-cylinder, sleeve valve, H-block aero engine of 46 litre (2,807 cubic inches) displacement. It was designed and built in the late 1940s by Rolls-Royce Limited and first ran in 1944. It was liquid cooled, of flat H configuration with two crankshafts and was capable of 3,200 hp (2,387 kW) at 18 psi boost.

The Eagle was never fitted to a production front-line fighter, as it was overshadowed by a new wave of turbojet engines, such as the Rolls-Royce Derwent and turboprops such as the Dart and Armstrong Siddeley Python. Approximately 50 Eagles were produced. It was used in the prototypes of the Westland Wyvern fighter / torpedo bomber.

pecifications (Eagle 22)

"Data from:" Lumsden [Lumsden 2003, p.221.] pistonspecs

type=24-cylinder liquid-cooled H-type aircraft piston engine
bore=5.375 in (136.5 mm)
stroke=5.125 in (130.2 mm)
displacement=2,790.1 in³ (45.74L)
length=135.5 in (3442 mm)
diameter=
width=43.4 in (1102 mm)
height=50.0 in (1270 mm)
weight=3,900 lbs (1769 kg)
valvetrain=Sleeve valves
supercharger=Two-speed, two-stage superacharger, maximum boost +28 lb
turbocharger=
fuelsystem=
fueltype=100 Octane petrol
oilsystem=
coolingsystem=Liquid-cooled
power=3,200 hp (2,387 kW) at 18 psi (124.1 kPa) of boost (MEP 258 psi (1.78 MPa) at 3,500 rpm)
specpower=1.13 hp/in³ (51.7 kW/L)
compression=7:1
fuelcon=
specfuelcon=
oilcon=
power/weight=0.82 hp/lb

ee also

*Rolls-Royce aircraft piston enginesAeroenginecontent
related=
*Rolls-Royce Crecy, a contemporary sleeve-valve, Vee-12, 2-stroke engine

similar aircraft=
*Napier Sabre, a contemporary sleeve-valve, 24-cylinder, H-block engine from Napiers

lists=
* 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.

External links

* [http://www.enginehistory.org/eagle_22.htm A working Rolls-Royce Eagle 22 model engine]
* [http://archive.dstc.edu.au/BDU/staff/ron/gallery/croft/eagle/ Additional pictures of the same model engine]
* [http://www.stobbe.dk/library/engines/rolls_royce/images/eagle22.jpgPhoto of a Rolls-Royce Eagle 22]