RAF 3

The RAF 3 was 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.

Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.

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v • d • e Lists relating to aviation
General	Timeline of aviation · Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines
Military	Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft
Notable incidents and accidents	Military aviation · Airliners · General aviation · Famous aviation-related deaths
Records	Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft