Pratt & Whitney has successfully completed testing of an adaptive three-stream fan in an engine with an F135 core, a key step in the development of next-generation fighter propulsion technology. Preliminary data from the test indicates Pratt’s fan “has met or exceeded expectations with respect to performance as well as the integrity of the turbofan machinery and fan module,” said Matthew Bromberg, president of Pratt & Whitney Military Engines, according to a ...

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