Pratt & Whitney F100

The Pratt & Whitney F100, company designation JTF22, is a low-bypass afterburning turbofan designed and built by Pratt & Whitney for the United States Air Force. It was developed for the FX initiative of 1965 that became the McDonnell Douglas F-15 Eagle, and it also powered the F-16 Fighting Falcon chosen under the Lightweight Fighter program. Pratt & Whitney won the Initial Engine Development Program competition against General Electric, and the Air Force awarded it a development and production contract in 1970. The F100-PW-100 first flew in an F-15 in 1972, and later versions such as the -220 of 1986 and the -229 were introduced to improve reliability and thrust.