Bristol Lucifer

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The Bristol Lucifer was a British three-cylinder, air-cooled, radial engine for aircraft. Built in the UK in the 1920s by the Bristol Aeroplane Company, it produced 100 horsepower (75 kW).

The Lucifer was originally a Cosmos Engineering engine, Cosmos being taken over by Bristol in 1920.

Applications

Specifications (Lucifer 1)

Bristol Lucifer, view of sectioned cylinder.

Data from Lumsden^[1]

General characteristics

Type: 3-cylinder air-cooled single-row radial engine
Bore: 5.75 in (146 mm)
Stroke: 6.25 in (159 mm)
Displacement: 487 in³ (8.0 L)
Diameter: 48 in (1219 mm)
Dry weight: 324 lb (147 kg)

Components

Valvetrain: Four valves per cylinder, poppet valve
Fuel type: Petrol
Cooling system: Air-cooled

Performance

Power output: 100 hp (75 kW)
Compression ratio: 4.8:1
Power-to-weight ratio: 0.3 hp/lb

References

Wikimedia Commons has media related to Bristol Lucifer.

Notes

↑ Lumsden 2003, p. 93.

Bibliography

Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.

Bristol / Bristol Siddeley aero engines

Bristol Aeroplane Company
Piston engines (1920-1956)

Horizontally opposed engines:	Cherub

Radial engines:	Draco Hydra Jupiter Lucifer Mercury Neptune Orion Pegasus Phoenix Titan

Sleeve valve radial engines:	Aquila Centaurus Hercules Orion Perseus Taurus

Bristol Siddeley gas turbine
and rocket engines (1959-1966)

Turbojets / Turbofans:	Gyron Junior Olympus Orpheus Pegasus BS.100 Phoebus Viper

Turboprops / Turboshafts:	BS.360 Coupled Proteus Nimbus Orion Proteus Theseus

Ramjets:	Thor Odin

Rocket engines:	BS.605 Gamma Stentor

Designers

v t e Cosmos Engineering aero engines

Lucifer Jupiter Mercury

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