Curtiss D-12

D-12/Felix
Preserved D-12 engine
Type	V-12 piston engine
Manufacturer	Curtiss Aeroplane and Motor Company
First run	1923
Developed from	Curtiss C-12

The Curtiss D-12, sometimes identified with the military designation Curtiss V-1150, was an aircraft engine of 18.8 liter capacity. 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 race. Fairey Aviation 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 cast-block engines, and was extremely influential in the interwar period. Numerous subsequent engines trace their design to the D-12, among them the Packard 1A-1500, Rolls-Royce Kestrel and Junkers Jumo 210.

Data from Lumsden

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