Engines
CFM Ramps Up Rise Open-fan Engine Testing
Noise and wind-tunnel tests on the new generation engine yield promising results
A one-fifth-scale demonstrator for the CFM RISE open-fan engine is pictured in a wind tunnel
A one-fifth-scale demonstrator for the CFM RISE open-fan engine is pictured in the wind tunnel at the Onera French national aerospace research center in Modane, France. © Safran

Development work for the Rise open-fan engine has shifted from the design phase to an extensive ground testing campaign as CFM International prepares to begin flying a technology demonstrator in the coming years.

CFM launched the Revolutionary Innovation for Sustainable Engines (RISE) program in 2021 to develop a successor to the ubiquitous Leap turbofan engine, which powers the Airbus A320neo, Boeing 737 Max, and Comac C919 airliners. It could support the next generation of single-aisle aircraft that airframers such as Boeing and Airbus aim to introduce in the 2030s.