CFM advances RISE open-fan sustainable engine and certifies LEAP 1B durability kits for 737 time on wing
CFM International says its RISE (Revolutionary Innovation for Sustainable Engines) technology demonstration has reached new design and test milestones for its open-fan powerplant concept. Separately, CFM has certified LEAP 1B “durability kits” aimed at improving high-pressure turbine and fuel nozzle reliability on 737 engines to boost time on wing.