Rolls-Royce Exe

The Rolls-Royce Exe, or Boreas, [This name was dropped due to conflict with the Bristol Aeroplane Company's series of Greek mythology named engines, Lumsden 2003, p.201.] 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, [Lloyd 1978, p4-5.] and stopped about August 1940. [Pugh 2000, p.263-265.] In August 1940 Hives wanted to stop work on the Peregrine, Exe and Vulture to concentrate on the Merlin and Griffon engines.

For discussion on Rolls-Royce development priorities, see Rolls-Royce aircraft piston engines.

pecifications (Exe)

"Data from:" Lumsden [Lumsden 2003, p.201.] pistonspecs

type=24-cylinder supercharged liquid-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)
length=
diameter=
width=
height=
weight=1,530 lb (694 kg)
valvetrain=Sleeve valve
supercharger=Gear-driven centrifugal type supercharger, single stage
turbocharger=
fuelsystem=
fueltype=Petrol
oilsystem=
coolingsystem=Pressure air-cooled
power=1,150 hp at 4,200 rpm, +4.5 psi boost at sea level
specpower=
compression=8:1
fuelcon=
specfuelcon=
oilcon=
power/weight=0.75 hp/lb

ee also

*Rolls-Royce aircraft piston enginesAeroenginecontent
related=
*Rolls-Royce Pennine

similar aircraft=
*Allison V-3420
*Junkers Jumo 222
*Napier Sabre

lists=
* List of aircraft engines

References

Notes

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

External links

* [http://www.stobbe.dk/library/engines/rolls_royce/images/rr-exe.jpgPhoto of the Rolls-Royce Exe]