The engine powered 89 types of military and commercial aircraft. Production totaled 173,618, more than any other aircraft engine. However, although a classic engine, it required the highest octane ...

The Kinner R-5, Series 2 engine was certificated in December 1935. A principal R-5 design change from previous Kinner engines was a greatly increased cooling area resulting from longer and more ...

Mike Nieman, in his proper COVID-19 face mask, stands in front of the Pratt & Whitney R-4360 radial aircraft engine that's on a trailer at his St. Helena shop.

Covington Aircraft Engines will close its renowned radial engine shop in 2025 after 53 years and nearly 10,000 overhauls of Pratt & Whitney R-985 and R-1340 engines.

THIS paper presents the results of coordinated research by The Pratt & Whitney Aircraft Co. (engines), the Chance Vought Corp. (airplanes), and the U.A.T. Research Division, all subsidiaries of the ...

Mike Nieman, in his proper COVID-19 face mask, stands in front of the Pratt & Whitney R-4360 radial aircraft engine that's on a trailer at his St. Helena shop.