GE Aviation has completed the assembly of the first test engine for the Boeing 777X project, the GE9X will undergo an extensive testing phase at GE's unit in Peebles, Ohio, where it will be put to the test in every possible situation.
“The engine is in place, it's just a matter of adding lots of instrumentation for testing,” said GE9X Program Manager Bill Millhaem. Testing will begin "soon", he says, although there is no definite date on GE's part.
According to GE, an extra test will be performed during the engine program, the sand intake test, suitable for Middle East customers. Apart from the various cycles of use in the components in CMC, which are already being tested in an adapted GEnx engine. GE will use a 747-400 to adapt the new engines in the flight test phase, during 2017 and 2018, when certification of the GE9X is expected.
GE's new engine incorporates ceramic matrix (CMC) materials in the interior and exterior linings of the combustion system. CMC is significantly lighter, stronger and more heat resistant than the metal components they replace, plus it saves weight and allows the engine to run more efficiently and warmer. GE expects that innovations in engine airflow, weight reduction and the use of composite materials will make the GE9X 10% more fuel efficient when compared to the current GE90.
