Engine architecture
The RISE Program is demonstrating foundational technologies that will allow CFM to define the optimum engine architecture to best meet the specifications and aircraft development schedule.
Open fan architecture, the most efficient option
The pursuit of ever-increasing propulsive efficiency has driven the growth of engine fan diameter in commercial jet engines over the past five decades. This progression is ultimately leading to the open fan concept which is currently the most efficient option to improve the propulsive efficiency of the engine.
Advancing Open Fan architecture
This advanced, new generation open fan architecture will be able to fly at the same speed as current single aisle aircraft (up to Mach 0.8, or 80 percent the speed of sound) with a noise signature that will meet anticipated future regulations.
Airframe integration
The technologies developed as part of the RISE program require closer integration with the aircraft manufacturers than ever before. Through a strong partnership with aircraft manufacturers, we can fully optimize installed performance of advanced architectures.
On the way for flight tests with Airbus
Airbus and CFM launched in 2022 a flight test demonstrator for advanced open fan architecture aims to mature and accelerate the development of advanced propulsion technologies, on board an Airbus A380.
The flight test program will achieve several objectives that could contribute to future engine and aircraft efficiency improvements, including: enhanced understanding of engine/wing integration and aerodynamic performance as well as propulsive system efficiency gains; validating performance benefits and evaluating acoustic models; and ensuring compatibility with 100% Sustainable Aviation Fuels (SAF).
The flight test campaign will be performed in the second half of this decade.