MTU Aero Engines completes first turbine center frame for GE9X

Dino D'Amore
By Dino D'Amore February 2, 2016 21:06

MTU Aero Engines completes first turbine center frame for GE9X

MTU Aero Engines in Munich has completed the first development turbine center frame (TCF for short) to go into the GE9X engine. “In this engine program, we are not only responsible for the manufacture of the TCF, but also assumed responsibility for its development right from the outset,” explained Dr. Jörg Henne, Senior Vice President Engineering and Tech-nology, on the occasion of the last bolt ceremony held in Munich in late January. “On another positive note, to make the deadline, we have completed the first GE9X TCF within record time,” according to Theodor Pregler, Senior Vice President Commercial Programs at MTU in Munich.

The new GE engine has been selected to be the exclusive propulsion system for the Boeing 777X. Delivering more than 100,000 pounds of thrust, the GE9X will be the most fuel-efficient engine ever produced by GE Aviation on a per-pounds-of-thrust basis. The schedule is as follows: The first run of the engine is slated for this spring, and entry into service is expected for 2020. To date, firm orders have been received over 300 of the aircraft.

Said Pregler: “We have a stake of four percent in the GE9X program. This secures MTU a significant market share in one of the most important next-generation engines in the upper thrust category.” Long-haul commercial transports are considered a rapidly growing segment of the airliner market that is only moderately exposed to economic fluctuations. Taken over the entire life of the GE9X, MTU expects the program to generate revenues in the amount of some four billion euros. The TCF for the GE9X is the most highly sophisticated turbine center frame in MTU’s portfolio from a technology point of view. “Starting from the basic architecture of the TCF for the GEnx, we’ve made some comprehensive optimizations,” reported Henne. These improvements include enhanced constructions and a new suspension concept for the first LPT vane.

The turbine center frame is the duct for the hot gas flowing from the high-pressure turbine into the low-pressure turbine. The structural component is essentially made up of two groups of parts: the hub strut case (HSC) and the flowpath hardware (FPH). The HSC is the main structural element and consists of a casing containing a number of support struts assembled around a hub with an integrated bearing chamber. The FPH is made up of castings that form the gas-flow duct. “The TCF is a highly engineered engine component serving a multitude of functions and is manufactured to tight tolerances,” explained Henne. Pregler added: “Thanks to our many years of experience in the field of TCFs, we’ve succeeded in further expanding our close and trustful partner-ship with GE.”

Dino D'Amore
By Dino D'Amore February 2, 2016 21:06