GE Aerospace completes latest test milestone advancing compact engine core technology

GE Aerospace recently completed more than 3,000 cycles of endurance tests on next-generation high-pressure turbine (HPT) airfoil technologies, another step in the development of a more compact engine core for the future of flight.

The test campaign of HPT blades and nozzles demonstrated improved durability and fuel efficiency compared to conventional turbine technology, important for customer operations. Endurance tests look to simulate high-thrust takeoff and climb to see how parts would withstand flight conditions. Earlier tests initially focused on validating thermal, mechanical, and system performance of the HPT hardware.

GE Aerospace is developing a compact engine core including high-pressure compressor, HPT, and combustor technologies for a core demonstrator later this decade through the CFM RISE program (Revolutionary Innovation for Sustainable Engines (RISE) is a technology demonstration program and registered trademark of CFM International, a 50-50 joint company between GE Aerospace and Safran Aircraft Engines).

“With endurance tests conducted on new high-pressure turbine blade cooling technologies, it shows the CFM RISE program’s early focus on durability and reliability. This is the earliest in new technology development that we’ve done durability tests, incorporating the experience of our commercial aircraft engines flying today,” said Arjan Hegeman, vice president of future of flight engineering for GE Aerospace.

Additional testing is planned. The next step is to run dust ingestion testing to evaluate how the turbine blades located in the hottest section of the engine behave in severe environments.

Real progress

Unveiled in 2021, the CFM RISE program is one of the aviation industry’s most comprehensive technology demonstrators showing real progress with more than 250 tests completed.

The RISE program is advancing a suite of pioneering technologies. In addition to the compact core, these include engine architectures like Open Fan and hybrid electric systems. Technologies are being tested with conventional and alternative jet fuels, such as unblended Sustainable Aviation Fuel (SAF). The CFM RISE program targets more than 20% better fuel burn and improved durability and reliability compared to the most efficient commercial engines in service today.