RAF 3 explained

The RAF 3 is a British liquid-cooled, V-12 engine developed for aircraft use during World War I. Based on the eight–cylinder RAF 1 it was designed by the Royal Aircraft Factory but produced by the two British companies of Armstrong Whitworth and Napier & Son. The RAF 7 was a high compression version of the same engine.^[1]

Variants

RAF 3

1914 - Prototype engine, 200 horsepower (150 kW).

RAF 3a

1914 - Main production variant, increased bore, 260 horsepower (194 kW). 29 built by Armstrong Whitworth, 260 built by Napier & Son.

RAF 7

300 horsepower (224 kW) high compression version with high-lift camshafts.

Applications

• Airco DH.4
• Royal Aircraft Factory R.E.7

References

Bibliography

• Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989.
• Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. .

Notes and References

1. Gunston, 1989, p. 156.

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