Reducing aircraft noise - Active rotor control to reduce noise and vibration

DLR German Aerospace Center
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Reducing aircraft noise - Active rotor control to reduce noise and vibration


Under some operating conditions, rotors are the main source of noise produced by a helicopter. To reduce this noise and the simultaneous vibrations, the German Aerospace Centre (Deutsches Zentrum fuer Luft- und Raumfahrt; DLR), together with Airbus Helicopters Deutschland, has tested active rotor control on a modern, five-blade rotor in a wind tunnel as part of the SKAT (Scalability and risk minimisation of technology) research project. The result was an approximately 30 percent reduction in noise.


Full article with images: http://www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10081/151_read-23281/year-all/#/gallery/27554

DLR´s research area aeronautics:
http://www.dlr.de/aeronautics

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