F135

With more than 19,500 test hours completed, Pratt & Whitney’s F135 propulsion system is the lead engine for the F-35 Lightning II and the most powerful fighter engine ever developed. The F135 is now transitioning from development to production. The F-35 is a fifth generation, advanced, single-engine tactical fighter developed by Lockheed Martin in conjunction with BAE Systems and Northrop Grumman.