As part of GE9X engine development for the Boeing 777X, GE Aviation has started ground tests on a GEnx engine containing ceramic matrix composite (CMC) components in the high pressure turbine and combustor. The lightweight, heat-resistant CMC components will play an important role in the “hot section” of the GE9X. GE90/GE9X engine programs VP Bill Millhaem said in a statement, “The GEnx engine testing campaign, which began in late January, will allow us to demonstrate the ...

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