Low emissions design for reduced aircraft noise

The contra-rotating open rotor (CROR) engine employs uncased blades (not enclosed within the engine nacelle) and promises enhanced efficiency. EU-funded scientists confronted the noise issue, made trickier by the open design, in order to speed up certification.

In line with Clean Sky objectives to reduce aircraft environmental impact, the CROR engine could cut fuel consumption and associated carbon dioxide emissions by 30 %.

Further information: Low emissions design for reduced aircraft noise