Bristol Lucifer

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A Bristol Lucifer built into the LFG V 44 (D-669)

The Bristol Lucifer (originally Cosmos Lucifer ) was an air-cooled dreizylindriger OHV - radial engine , the Roy Fedden at Cosmos Engineering in 1919 developed.

history

Cosmos went bankrupt in 1920 as the engine division of the Bristol Airplane Company Ltd in this company. The engine was presented to the public for the first time at the Olympia Air Show in London in August 1920.

For the engine built under the company name Bristol, the same four-valve cylinders were used as in the successful Bristol Jupiter , but the stroke was shortened by 31.8 mm.

The engine was already installed in an Avro 504 K and the Boulton Paul P.10 under the company name Cosmos Lucifer . This version, called Lucifer I , had a starting power of 100 hp. The Lucifer II version developed 122 hp and was installed in the Avro 504N, Bristol 73 and Bristol 83 aircraft. In 1923 the slightly more highly compressed Lucifer III came out, which was also used in the Parnall Peto and produced 128 hp. The end of the development was Lucifer IV, which was delivered from 1925 and whose power was increased to 140 hp. It was used in the Handley Page HP 32 , among others . A racing version was built into the Bristol 77 M.1D .

The engine in the various versions was also used in foreign machines, for example in the USSR (e.g. ANT-2 ) and in Germany. Here Lucifer motors were e.g. B. in the LFG V 44 (D-669), Udet U 8 (D-670), Caspar C 26 (D-674), Heinkel HD 32 (D-678), Albatros L 69 (D-684 and D- 778), BFW M 17 (D-779) and Junkers K16 (D-718 and D-1208) installed.

Technical data (Lucifer I)

Cutaway model with valve control
  • Type: three-cylinder radial engine
  • Cooling system: air-cooled
  • Bore: 146 mm
  • Stroke: 159 mm
  • Displacement: 7.99 l
  • Dry weight: 147 kg
  • Valve train: OHV four valves per cylinder, type: poppet valve
  • Fuel type: gasoline
  • Power: 100 PS (75 kW)
  • Compression ratio: 4.8: 1
  • Ignition: magnetic double ignition
  • Spark plugs: 6, 2 pieces per cylinder

swell

  • "British Piston Aero Engines and their Aircraft," Alec Lumsden, ISBN 1-85310-294-6 .
  • “Research on the German aircraft role”, Karl Ries, Verlag Dieter Hoffmann 1977, ISBN 3-87341-022-2
  • Alec Lumsden: British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6

See also

Web links

Commons : Bristol Lucifer  - collection of images, videos and audio files