Bristol Draco

The Bristol Draco was an air-cooled 9-cylinder radial engine from the British manufacturer Bristol Aeroplane Company. It was essentially a version of their famous Pegasus converted to use a fuel injection system.

The carburettor had only a simple butterfly valve, while two injection pumps supplied the cylinders with fuel, one handling four cylinders and the other, five . Injection was into the manifold before they split into the two intake valves for each cylinder. The engine was flight tested in a Westland Wapiti. Since the expenditure did not bring considerable improvements the development was stopped.

pecifications (Draco)

pistonspecs

ref= [Lumsden 2003, p.114.]
type=Nine cylinder air cooled radial engine.
bore=5.75 in (146 mm)
stroke=7.5 in (190 mm)
displacement=1,753 cu in (28.7 L)
length=43.5 in (1,105 mm)
diameter=55.5 in (1,410 mm)
width=
height=
weight=1,093 lb (495.8 kg)
valvetrain=Overhead valve
supercharger=Medium supercharged
turbocharger=
fuelsystem=Fuel injected
fueltype=
oilsystem=
coolingsystem=Air cooled
power=570 hp at 2,000 rpm
specpower=
compression=5.3:1
fuelcon=
specfuelcon=
oilcon=
power/weight=0.52 hp/lb

designer=Roy Fedden
reduction_gear=Geared epicyclic, reduction ratio 0.5:1, left hand tractor

general_other=
components_other=
performance_other=

ee also

* 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.