RTX Corporation's (RTX) business segment, Pratt & Whitney, recently secured a contract worth up to $1.3 billion to continue working on the F135 Engine Core Upgrade ("ECU"), which will increase the engine's longevity. These upgraded F135 engines, once integrated into the F-35 jets, are expected to boost this fighter aircraft's performance. RTX's F135 Engine Core Upgrade Benefits The ECU is an upgrade developed by Pratt & Whitney for its F135 engines to provide an affordable, low-risk and agile pathway for en ...