Media Gallery

Pratt & Whitney F135 engine [USAF photo]

Pratt & Whitney F135 engine [USAF photo]

Pratt & Whitney F135 engine [USAF photo]

Lockheed Martin employees conducting an engine fit check on the first F-35 Joint Strike Fighter [LMTAS photo]

Lockheed Martin employees conducting an engine fit check on the first F-35 Joint Strike Fighter [LMTAS photo]

Lockheed Martin employees conducting an engine fit check on the first F-35 Joint Strike Fighter [LMTAS photo]

A Pratt & Whitney F135 flight test engine in full afterburner running at the Naval Air Station Joint Reserve Base in Fort Worth, Texas. At 40,000 pounds of thrust, the F135 is the most powerful fighter engine ever built. [Pratt & Whitney photo]

The F-35 Lightning II lights its afterburner during a ground test at Lockheed Martin in Fort Worth, Texas, on Monday afternoon, September 18th. The Pratt & Whitney F135 engine is the most powerful engine ever in a jet fighter, producing 40,000 pounds of thrust. [LMTAS photo]
See also: Mighty F-35 Lightning II engine roars to life

The Pratt & Whitney (P&W) led F135 Propulsion System Team is testing its second F135 Short Take-Off and Vertical Landing (STOVL) Propulsion System, engine number FX643. The tests on FX643 are focused on endurance testing. [USAF photo]