The Pratt & Whitney engine for the F-35 is being upgraded for the first time since the original design was frozen in 2004.
Credit: Mark Wagner/Aviation Images
An engine upgrade for the Lockheed Martin F-35 is set to advance beyond the preliminary design stage by the end of March, even as General Electric continues to campaign for a competition to replace the fighter’s Pratt & Whitney F135. Pratt plans to complete preliminary design work on the Engine Core...
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