“RISE is no longer a paper plan, it’s reality,” Muhammad Ali, executive vice president of research at GE Aerospace, said at a press briefing on Saturday before the Paris Airshow.
RISE, which represents the revolutionary innovation for sustainable engines, should be 20 percent more efficient and therefore more economical than CFM LEAP. This, in turn, is 15 to 20 percent more efficient than CFM56, which is used in Boeing 737s from KLM, Transavia, Corendon and others.
RISE derives its efficiency in part from its open rotor concept. The fan blades are no longer housed in a housing, but stand in the free air, just like a fan. In addition, the engine has a very compact core. “If you’re going to compare it to an engine that already exists, think of an engine with a GE9X propeller (on the Boeing 777X) and a core of a very small business jet,” Ali said.
The pulp contains components made of high-quality materials that can withstand higher temperatures. GE Aerospace and Safran designed the turbine blades, stator profiles (chips), and rear engine parts using the most powerful supercomputer in the United States.
These parts were then manufactured and tested. “We’ve seen great results on the test benches,” says Muhammad Ali. “As we speak,” Ali said, the turbine blades in the F110 engine also found in the F-15 are being tested.
Supercomputer simulations have also shown that RISE makes less noise than the LEAP engine. The first generation of open rotors tested in the 80’s and 90’s made a lot of noise.
Around 2025-2026, RISE will be tested under the wing of the Airbus A380. It’s not a ready-made engine, but it will eventually be developed into a power source for next-generation Airbuses and Boeings. The force is now in order what you need Boeing MAX or Airbus A321neo. “We will ensure that the technology is mature and ready to enter service by the mid-2030s.”
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