Raytheon Technologies' [RTX] Pratt & Whitney is gearing up to finish the preliminary design review (PDR) of P&W's proposed F135 engine core upgrade (ECU) for the Lockheed Martin [LMT] F-35 and is planning to enter the detailed design phase for the F135 ECU early next year, P&W said at the Paris Air Show on June 19. "To meet this timeline, the company has more than doubled the F135 ECU team from 200 to 500 people," P&W said. As the U.S.…
