GE Begins Tests Of GE9X CMC Parts

GE Aviation has started testing ceramic matrix composite (CMC) components for the hot section of its GE9X engine, which is set to power the 777X.

GE Aviation has started testing ceramic matrix composite (CMC) components for the hot section of its GE9X engine, which is set to power the 777X.

The OEM has installed CMC components, including: inner and outer combustor liners; high pressure turbine (HPT) stage 1 shrouds; and HPT stage 2 nozzles within a GEnx engines which it is running at its Peebles, Ohio site.

Tests began in late January and the engine has already completed 350 endurance cycles.

GE is also testing non-CMC parts in this programme, including: next-generation HPT stage 1 blades that include advanced cooling technologies and lightweight low-pressure turbine titanium-aluminide blades produced via a 3D printing process.

GE has confirmed that on a second build of the test engine it will begin testing HPT stage 1 nozzles.

It is expected that GE and its partners, which include IHI, Snecma and MTU Aero Engines, will spend more than $500m on technology maturation and product development for the GE9X in 2015.

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