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100th Anniversary Logo with the 100 in large letters and the museum logo
Open 9 a.m. to 5 p.m. seven days a week.
FREE Admission & Parking

Pratt & Whitney R-985

The R-985 air-cooled engine was first used by the Army Air Corps in 1932. At that time, it was rated at 300 horsepower. Over the next ten years, further refinements were made, and during World War II some variants produced up to 450 horsepower. The R-985 powered thousands of military aircraft of various types in addition to being installed in numerous civilian types of aircraft.



Type: 9-cylinder, air-cooled, supercharged radial

Displacement: 985

Maximum rpm: 2,300

Maximum hp: 450

Cost: $6,000

Click here to return to the World War II Gallery.