De Havilland Gipsy Twelve

The de Havilland Gipsy Twelve was an aero-engine developed by de Havilland. Approximately 95 were manufactured. It was known as the Gipsy King in RAF service.

Applications

* de Havilland DH.91 Albatross
* de Havilland DH.93 Don

pecifications (Gipsy King I)

pistonspecs

ref= [Lumsden 2003, p.147]
type=Inverted 60 degree V-12 inline piston engine
bore=4.646 in (118 mm)
stroke=5.512 in (140 mm)
displacement=1121.3 cu in (18.3 L)
length=82.6 in (2098 mm)
diameter=
width=31.5 in (800 mm)
height=37.4 in (950 mm)
weight=1,058 lb (480 kg)
valvetrain=Overhead valve
supercharger=Single speed
turbocharger=
fuelsystem=
fueltype=87 Octane petrol
oilsystem=
coolingsystem=Air cooled
power=425 hp at 2,450 rpm at 0 psi boost (five minutes maximum)
specpower=
compression=6:1
fuelcon=
specfuelcon=
oilcon=
power/weight=0.4 hp/lb

designer=
reduction_gear=Spur geared, reduction ratio 0.667:1

general_other=
components_other=
performance_other=

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/12.jpgPhoto of a de Havilland Gipsy Twelve at Enginehistory.org]

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