General Electric and Pratt & Whitney have been selected over Rolls-Royce for the U.S. Air Force Research Laboratory’s Adaptive Engine Technology Development (AETD) program to mature fuel-efficient, high-thrust powerplants for post-2020 Lockheed Martin F-35 upgrades and sixth-generation combat aircraft. Selection for negotiations is a coup for Pratt, which in 2007 lost out to GE Aviation and Rolls-Royce North American Technologies for the precursor Adaptive Versatile Engine ...


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