Rolls-Royce Merlin R.M. 14S.M. Mk 100 V-12 Engine
date: label: Date
content: 1944
name: label: Manufacturer
content: Rolls-Royce Ltd. (Derby, U.K.)
notes: label: Physical Description
content: Type: Reciprocating, V-type, 12 cylinders, pressure liquid cooled, supercharged
label: Physical Description
content: Power rating: 1,227 kW (1,645 hp) at 3,000 rpm
label: Physical Description
content: Displacement: 27 L (1,649 cu in.)
label: Physical Description
content: Bore and Stroke: 137.16 mm (5.4 in.) x 152.4 mm (6 in.)
label: Physical Description
content: Weight: 778 kg (1,715 lb)
label: Summary
content: Formed in 1906 to produce automobiles, Rolls-Royce was asked to begin designing and building aircraft engines at the outbreak of World War I in 1914. Design of the Merlin began in 1933 following the similar Kestrel design. Early Merlin Mk II and Mk III engines, which produced about 7,457 kw (1,000 horsepower), powered Hawker Hurricanes and Supermarine Spitfires in the Battle of Britain. Engine improvements and progress in supercharger performance increased the Merlin's rated power to over 1,715 kW (2,300 horsepower) by the end of the war.
label: Summary
content: This engine, a developmental prototype in the Merlin 100 series, was built by Rolls-Royce in Derby, England, sometime between June and July 1944. It was a new class of engine, built to higher performance standards for power and altitude. Merlin 100s powered the de Havilland Mosquito, Avro Tudor, and de Havilland Hornet and Sea Hornet. U.S. Packard-built Merlin 100s (V-1650-9 and -11) powered later versions of the North American Mustang.
place: label: Country of Origin
content: United Kingdom
setName: label: See more items in
content: National Air and Space Museum Collection
creditLine: label: Credit Line
content: Transferred from the United States Air Force, Park Ridge Facility
dataSource: label: Data Source
content: National Air and Space Museum
identifier: label: Inventory Number
content: A19670085000
objectType: label: Type
content: PROPULSION-Reciprocating & Rotary
objectRights: label: Restrictions & Rights
content: CC0
physicalDescription: label: Materials
content: Aluminum and Steel
label: Dimensions
content: Length 225.3 cm (88.7 in)., Width 78 cm (30.7 in.), Height 101.3 cm (39.9 in.)