Hardy composites for future aeroengines

A new open propeller engine concept could soon replace the turbofan for significant reductions in aircraft fuel consumption and emissions. Scientists addressed the challenging task of using lightweight composites in the engine’s harsh environment.

The counter-rotating open rotor (CROR) engine concept, also called a propfan, has two propellers that rotate in opposite directions around the same axis. The upstream one imparts energy to the air flow that is recovered by the downstream one, increasing efficiency. Given the close proximity of the two rotors and the high dynamic loads, unsteady aerodynamics and fatigue are technical challenges that must be addressed.

Further details: Hardy composites for future aeroengines