Engines
P&W Outlines Three-step F135 Development Pathway
The F135 improvement program would result in a new engine with a third airstream and adaptive-cycle compressor in the mid to late 2020s.

Pratt & Whitney has unveiled a development pathway for thrust growth, fuel-burn reduction and other improvements in the F135 engine powering the F-35 Lightning II Joint Strike Fighter (JSF). Itcould result in the U.S. armed forces fielding improved versions of the basic F135 for land-based, STOVL and carrier-based F-35s as early as 2020.

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