Rentschler left the Army convinced that future aircraft would require lighter-weight engines with much greater power and higher reliability. His proposed design of an air-cooled engine flew in the face of conventional wisdom, which held that heavier liquid-cooled engines would power the future of aviation.
Rentschler became president of the Wright Aeronautical Corporation and pressed for research into his idea. Unable to convince his board of directors, largely composed of investment bankers with little aviation knowledge, he resigned in 1924, and supported by old friend and Wright chief engineer George J. Mead, he developed a proposal for a high-powered air-cooled aircraft engine for the U.S. Navy.[2]AdmiralWilliam A. Moffett promised to approve the purchase of such an engine.
Pratt & Whitney Aircraft's first engine, completed on Christmas Eve 1925, was named the Wasp by Faye Belden Rentschler, whom Frederick had married July 25, 1921. The 425 horsepower (317 kW) Wasp easily passed its official qualification test in March 1926 and the Navy ordered 200 engines. The speed, climb performance, and reliability that the engine offered revolutionized American aviation.[4] Over the next twenty years, from the original Wasp design the Pratt & Whitney Wasp series developed, approaching ten times the power of the 1925 engine.
In 1929, Rentschler ended his association with Pratt & Whitney Machine Tool Company, but was allowed to keep the name Pratt & Whitney Aircraft Company. Rentschler, Vought and William Boeing of The Boeing Company formed the United Aircraft and Transport Corporation. United Aircraft completed the first coast-to-coast passenger network in March of that year.[2]
In 1934, UATC was broken up, and its manufacturing interests east of the Mississippi River became United Aircraft Corporation, headquartered in Hartford with Rentschler as president.
Rentschler turned to developing jet engines after World War II. Pratt & Whitney produced the J57 jet engine in 1953. The engine was used to power the first B-52 Stratofortress in 1954.
Rentschler remained as president of United Aircraft until his death on April 25, 1956, in Boca Raton, Florida.[5][6] He is buried at Fairview Cemetery in West Hartford.
Awards
In 1951, Rentschler was made an Officer of the Légion d'honneur “for his contribution to the progress of aeronautical science".[citation needed]
In 1958, the United States Air Force posthumously presented him with the Civilian Service Award for Exceptional Service as a pioneer in the development, research and manufacture of aircraft engines.[citation needed]