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.

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