Pratt & Whitney Receives $455.5 Million in Support of F135 Engine Lot 14 Production

Pratt & Whitney Military Engines, a division of United Technologies Corp. (UTC), is awarded a contract modification in support of the lot 14 production of F-135 afterburning turbofan engines.

According to a Pentagon statement, “this modification provides for non-recurring engineering and tooling in support of the lot 14 production and delivery of 32 F135-PW-100 propulsion systems and one F135-PW-600 propulsion system for F-35 Joint Program Office non-Department of Defense (DoD) participants.”

The modification is being awarded by the U.S. Navy’s Naval Air Systems Command (NAVSEA). This modification combines purchases for non-DoD participants (93%); U.S. Air Force (3%); U.S. Navy (2%); and the U.S. Marine Corps (2%).

Work will be performed in East Hartford, Connecticut (97%); Indianapolis, Indiana (2%); and Bristol, United Kingdom (1%), and is expected to be completed in April 2022.

The Pratt & Whitney F135 is an afterburning turbofan engine developed by American aerospace manufacturer Pratt & Whitney for the Lockheed Martin F-35 Lightning II single-engine stealth strike fighter.

Developed from the Pratt & Whitney F119 engine used on the F-22 Raptor, the F135 produces around 40,000 lbf of thrust. The F135 competed with the General Electric/Rolls-Royce F136 to power the F-35.

The F135 family has several distinct variants; a conventional, forward thrust variant – F135-PW-100 – and a multi-cycle Short Take-Off Vertical Landing STOVL variant – F135-PW-600 – that includes a forward lift fan. The engine and Rolls-Royce LiftSystem make up the Integrated Lift Fan Propulsion System (ILFPS).

The F135 team is made up of Pratt & Whitney, Rolls-Royce and Hamilton Sundstrand. Pratt & Whitney is the prime contractor for the main engine, and systems integration. Rolls-Royce is responsible for the vertical lift system for the STOVL aircraft. Hamilton Sundstrand is responsible for the electronic engine control system, actuation system, PMAG, gearbox, and health monitoring systems. Woodward, Inc. is responsible for the fuel system.

The first production F135 engines were delivered in 2009.



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