Engines
GE Starts Ground Testing of CMC Parts on GE9X
Demo engine running in Peebles, Ohio
The GEnx technology demonstrator in Peebles, Ohio, tests functionality and durability of the engine's advanced hot-section components. (Photo: GE Aviation)
The GEnx technology demonstrator in Peebles, Ohio, tests functionality and durability of the engine's advanced hot-section components. (Photo: GE Aviation)

Ground testing has started on a GEnx engine that contains ceramic matrix composite (CMC) components in the high-pressure turbine (HPT) and combustor as part of the technology maturation program for the GE9X engine destined to power the Boeing 777X, GE announced Tuesday.