Aircraft engine: Rolls-Royce Merlin Mk XX
|Cooling||liquid-cooled (etylene glycol)|
|Displacement||27 l (1,647 cu in)|
|Propeller reduction gear ratio||0.69|
|Weight||660 kg (1,455 lb)|
|Maximum power||1,390 hp at 3,000 RPM at sea level|
|Climb power||1,300 hp at 3,000 RPM at 9,500 ft|
The most famous of Rolls-Royce piston engines, the powerplant of the Hurricane, the Spitfire, the Lancaster and the Mustang.
A V engine with a single-stage two-speed supercharger and reduction gear. Various versions of the Merlin (named after a species of falcon) powered the Hawker Huricane, Supermarine Spitfire, Fairey Battle, Fairey Barracuda, De Havilland Mosquito, Avro Lancaster, Handley Page Halifax and many other aircraft. 168,040 Merlin engines were built, among them 28,021 in the Mk XX variant. Variants manufactured on licence in the USA by the Packard company were used in the Curtiss P-40 Kittyhawk, North American P-51 Mustang and Supermarine Spitfire Mk XVI fighters. The Merlin Mk XX version powered the Avro Lancaster Mk I, III, VII, Boulton Paul Defiant Mk II, and Bristol Beaufighter Mk II aircraft.