Counter Rotating Integrated Shrouded Propfan

Counter-rotating rotor blades with lightweight construction

In order to make the next generation of aircraft engines more effcient and environmentally friendly, the DLR institutes of Structures and Design, Propulsion Technology, and Aeroelasticity, together with DLR Systemhaus Technik, have developed and tested a counter-rotating fan stage. The shape of the special rotor blades, which are on display at the DLR stand with a geometry demonstrator, increases their aerodynamic effciency while reducing noise emissions. The multidisciplinary design takes aerodynamic, aeroelastic, aeroacoustic, structural/mechanical and manufacturing aspects into account. The use of a new construction method based on fbre-reinforced plastics also results in a reduction in weight.

German Aerospace Center (DLR)

Michael Blocher · E-Mail: ·