The Curtiss D-12, sometimes identified with the military designation Curtiss V-1150, was an

aircraft engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...

of 18.8 liter

displacement Displacement may refer to: Physical sciences Mathematics and physics *Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...

. It was a water-cooled V12, producing 443 hp (330 kW) and weighing 693 lb (314 kg). It was designed by Arthur Nutt in 1921 and used in the Curtiss CR-3 for the 1923

Schneider Trophy The Coupe d'Aviation Maritime Jacques Schneider, also known as the Schneider Trophy, Schneider Prize or (incorrectly) the Schneider Cup is a trophy that was awarded first annually, and later biennially, to the winner of a race for seaplanes and ...

race.

Fairey Aviation The Fairey Aviation Company Limited was a British aircraft manufacturer of the first half of the 20th century based in Hayes, Hillingdon, Hayes in Middlesex and Heaton Chapel and RAF Ringway in Cheshire that designed important military aircraft ...

of England imported 50 Curtiss-built examples in 1926, renaming them the Fairey Felix. The D-12 was one of the first truly successful

aluminum Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...

cast-

block Block or blocked may refer to: Arts, entertainment and media Broadcasting * Block programming, the result of a programming strategy in broadcasting * W242BX, a radio station licensed to Greenville, South Carolina, United States known as ''96.3 ...

engines and was extremely influential in the interwar period. Numerous engines trace their design to the D-12, among them the

Packard 1A-1500 The Packard 1A-1500 was an American 12-cylinder liquid-cooled 60-degree Vee piston aircraft engine designed in 1924.Gunston 1989, p.109. Test flown in the second prototype Douglas XO-2, it proved to be unreliable. Only 29 engines ...

Rolls-Royce Kestrel The Rolls-Royce Kestrel (internal type F) is a 21.25 litre (1,295 in³) V-12 aircraft engine from Rolls-Royce. It was their first cast-block engine, and used as the pattern for most of their future piston-engine designs. Used during the interw ...

and

Junkers Jumo 210 The Jumo 210 was Junkers' first production inverted V12 gasoline aircraft engine, first produced in the early 1930s. Depending on the version it produced between 610 and 730 PS and can be considered a counterpart of the Rolls-Royce Kestrel in m ...

Applications

D-12

Boeing Model 15 The Boeing Model 15 is a United States single-seat open-cockpit biplane fighter aircraft of the 1920s, manufactured by the Boeing company. The Model 15 saw service with the United States Army Air Service (as the PW-9 series) and with the United ...

Curtiss CR The Curtiss CR was a racing aircraft designed for the United States Navy in 1921 by Curtiss. It was a conventional single-seater biplane with a monocoque fuselage and staggered single-bay wings of equal span braced with N-struts. Two essentiall ...

Curtiss Falcon The Curtiss Falcon was a family of military biplane aircraft built by the American aircraft manufacturer Curtiss Aeroplane and Motor Company during the 1920s. Most saw service as part of the United States Army Air Corps as observation aircraft ...

* Curtiss P-5 * Curtiss PW-8 * Curtiss R2C * Fokker D.XII *

Macchi M.33 The Macchi M.33 was an Italian racing flying boat which competed in the 1925 Schneider Trophy race. Design and development The Macchi M.33 was a single-seat, wooden, shoulder-wing monoplane flying boat of very clean aerodynamic design for its ti ...

Wittman D-12 Bonzo The Wittman D-12 "Bonzo" was an air racer designed by Steve Wittman for the Thompson Trophy races. The aircraft's top speed of made it faster than any United States military aircraft of the era. Development Wittman purchased a Curtiss D-12 engi ...

Felix

Fairey Firefly I The Fairey Firefly was a British fighter of the 1920s from Fairey Aviation. It was a single-seat, single-engine biplane of mixed construction. Development The Firefly was a private-venture design, penned by Marcel Lobelle. It was first flown ...

Fairey Fox The Fairey Fox was a British light bomber and fighter biplane of the 1920s and 1930s. It was originally produced in Britain for the RAF, but continued in production and use in Belgium long after it was retired in Britain. Development and des ...

Specifications (Curtiss D-12/Felix)

References

Notes

Bibliography

* Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. .

External links

Great Aircraft Engines - Curtiss D-12

a 1922 ''Flight'' article on the CD-12 {{USAF piston engines D-12 1920s aircraft piston engines V12 aircraft engines