Pratt & Whitney has delivered the first production F135 Short Take Off/Vertical Landing (STOVL) engine for the F-35 Lightning II, a major milestone and clear demonstration that the F135 STOVL propulsion system has transitioned from development to production. Pratt & Whitney is a United Technologies Corp. company.
“The F135 engine program accomplishments this year have been historical, and this first production STOVL delivery milestone demonstrates our commitment to fielding the most advanced military jet engine technology to the benefit of the war fighter,” said Bennett Croswell, vice president of F119/F135 Engine Programs for Pratt & Whitney. “We are particularly proud to be producing the most advanced propulsion systems ever built and that they will be used by the United States Marine Corp and our allies.”
The Pratt & Whitney F135 continues its steady progress through development testing and validation, into full production and sustainment. The F135 propulsion system has powered 509 flights and more than 740 flight test hours to date. The F135 has also completed more than 20,000 hours of testing – 3,600 test hours during the concept demonstration phase, 15,800 test hours during development and more than 700 hours powering the F-35 Lightning II flight test program.
The Conventional Takeoff and Landing (CTOL) / Carrier Variant (CV) engine received Initial Service Release (ISR) in February 2010 indicating that the engine has met the ISR requirements for safety, reliability, durability and performance, and that it is now cleared for use in the field. Pratt & Whitney has delivered all F135 flight test engines required for the program as well as 11 production engines, which includes the first STOVL F135 delivery. The STOVL F135 engine has completed all required testing and is on track to receive ISR certification before the end of the year.
“With both the CTOL and STOVL variant F135 engines in production and performing well in flight test, it is clear that the F135 has demonstrated and earned its position as the Department of Defense’s propulsion system of choice for the F-35 Lightning II,” Croswell said.
Pratt & Whitney, the only engine manufacturer producing fifth-generation propulsion systems, has designed, developed and tested the F135 to deliver this advanced fighter engine capability to the U.S. Air Force, Marine Corps and Navy and our allies. The F135 is derived from proven technology of the only operational fifth-generation fighter engine, the Pratt & Whitney F119 that exclusively powers the F-22 with more than 375,000 engine hours. It has been further enhanced with technologies developed in several Air Force and Navy technology demonstration programs.
The F135 propulsion system has proven through extensive ground and flight test experience that it can meet diverse aircraft requirements for armed forces around the world. The Pratt & Whitney F135 engine continues to be the only engine powering the successful Lockheed Martin F-35 flight test program.
Pratt & Whitney is a world leader in the design, manufacture and service of aircraft engines, space propulsion systems and industrial gas turbines. United Technologies, based in Hartford, Conn., is a diversified company providing high technology products and services to the global aerospace and building industries.
