36 Perimeter Rd., Bradley Int'l Airport,
Windsor Locks,CT 06096
N 41d 56' 512" W 72d 41' 36"  
View Directions Here

Open 7 days a week, 10 a.m. to 5 p.m.
Holiday Hours
Phone (860) 623-3305

Adults 12 & Up $12.00
Children 4-11 $6.50, 3 & Under Free
Seniors 65 & Up $11.00

New England Air Museum
Curtiss D-12



The D-12 was a 12-cylinder, water-cooled, V-type engine that was introduced in 1921. It became a successful and popular engine of the 1920's in military aircraft and Curtiss racing airplanes because of its relatively low frontal area. Arthur Nutt designed the D-12 as an improvement to the earlier Curtiss K-12. The engine has cast cylinder blocks for each bank of 6 cylinders and 4 valves per cylinder. The power output was about 400 hp at 2,000 rpm.

When it powered the Fairey Fox in 1925, the fastest airplane in England, it inspired Rolls-Royce to develop its famous Merlin engine. It was used in mail planes until the Pratt & Whitney 9-cylinder, air-cooled Wasp engine came along.

This example was manufactured in 1921. The D-12 was a great step forward in liquid-cooled engines and influenced inline military and racing engines through the start of World War II.

This engine is located in the connector between the Military and Civilian hangars.

If you have any information, or comments on the Curtiss D-12, please contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it. .


Type: 12-cylinder, water-cooled, "V" piston engine
Displacement: 1,145 cu. in.
Weight: 693 lbs.
Power Output: 400 hp at 2,000 rpm
Compression Ratio: 6:1
NEAM Id: 67


Engine Collection Index

See Air Museum Panoramas