Pratt & Whitney, a division of United Technologies Corp. (UTC), announced on Oct. 2 that it has been awarded a production contract for the 12th and 13th lots of F135 propulsion systems, powering all three variants of the F-35 Lightning II aircraft.
This award represents the largest-ever F135 production contract, funding more than 332 engines for the U.S. armed services and international customers, and includes program management, engineering support, production support, and tooling. The total contract value for Lot 12-14 is approximately $5.7 billion and it covers all Lot 12 and Lot 13 engines, with priced options for Lot 14.
“This is a significant milestone for the program and underscores the hard work of our joint government and industry team,” said Matthew Bromberg, president of Pratt & Whitney Military Engines. “We’re proud to be delivering 5th-generation propulsion capability at a great value for the warfighter.”
“With more than 500 F135 engines delivered to date, we’re at an exciting inflection point for the program. We are laser-focused on standing up an effective global sustainment network that will support the F135 throughout its lifecycle,” Bromberg said.
The Pratt & Whitney F135 is an afterburning turbofan developed for the Lockheed Martin F-35 Lightning II single-engine 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 three distinct variants: the F135-PW-100 engine used in the F-35A Conventional Take-Off and Landing (CTOL) variant, F135-PW-400 engine used in the F-35C carrier variant, and the F135-PW-600 engine used in the F-35B Short Take-Off Vertical Landing (STOVL) variant.
The -400 and -100 are conventional, forward thrust variant while the -600 is equipped with thrust vectoring nozzles and a lift fan for hovering. The engine and Rolls-Royce LiftSystem make up the Integrated Lift Fan Propulsion System (ILFPS). The -400 is similar to the -100, the major difference being the use of salt-corrosion resistant materials.
The first production F135 engines were delivered in 2009.