Pratt & Whitney’s F135 engine for the F-35 Lightning II Joint Strike Fighter has amassed more than 6,000 hours of testing system development and demonstration ground testing, in addition to the more than 3,600 hours logged during the concept demonstration phase of the F-35, according to a company press release. P&W, which recently supervised a full after-burner test, says the engine is ready for F-35 taxi testing slated for later this fall.
The Pentagon announced new long-term agreements with four defense companies May 13 to develop and produce large numbers of low-cost cruise missiles. And while the effort will focus mostly on the Army to start, it pairs with Air Force efforts to find more affordable munitions.