Pratt & Whitney TF30

The Pratt & Whitney TF30, company designation JTF10A, is a military low-bypass turbofan first designed for the subsonic F6D Missileer fleet defense fighter, a project cancelled in April 1961. Adapted with an afterburner, it became the first production afterburning turbofan in the world and powered the General Dynamics F-111 and the Grumman F-14A Tomcat; a non-afterburning version powered early LTV A-7 Corsair II models. It flew first in 1964 and stayed in production until 1986. The engine grew out of the JT10A proposal, a half-scale version of the JT8D, and uses a two-spool layout with three fan and six low-pressure stages, seven high-pressure stages and a can-annular combustor. It proved prone to compressor stalls at high angle of attack in the F-14, which led the US Navy to move to the General Electric F110 in later Tomcats.