Engines
Commercial-Engine OEMs Detail Emissions Work
All four major OEMs are working hard on engine-efficiency advances and hybrid-electric propulsion.
CFM's RISE program incorporates counter-rotating open rotor technologies.
CFM's RISE program incorporates counter-rotating open rotor technologies.

The four largest manufacturers of turbine aero engines for commercial aircraft all have launched significant projects to research and develop hybrid-electric propulsion systems able to power regional, single-aisle, and eventually even widebody airliners.

At the same time—and in some cases within the same research program—CFM International, GE Aviation, Pratt & Whitney/Pratt & Whitney Canada, and Rolls-Royce are working to improve turbine-engine efficiency significantly, substantially reducing CO2 and other emissions.