A longevity, thrust and fuel efficiency upgrade for the Lockheed Martin F-35 has passed a preliminary design review (PDR) milestone, Pratt & Whitney says. The announcement was made July 15. The F135 ...
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Is the F-35 Block 4 Fighter Program in Trouble?
Key Points - The F-35's Engine Core Upgrade (ECU), a critical component of the broader Block 4 modernization, has been delayed by at least a year, pushing its key Critical Design Review to mid-2026.
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F-35’s upgrade path looks simple until power, cooling, and software collide
How does a fighter based on “continuous modernization” continue to modernize when the bottleneck is no longer the shape of ...
The $2.8B contract funds 141 F135 engines for U.S. services and allies, securing production, spares, and upgrades through February 2028. Pratt & Whitney has been awarded a major contract, valued at ...
The F-35 program is delaying some of its planned Block 4 upgrades as it focuses on delivering capabilities as early as 2031. (A1C Eli Rose/Air Force) The F-35 Joint Strike Fighter program is scaling ...
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