The German Aerospace Center (DLR) in Braunschweig does research in the fields of aeronautics, transport, space and energy. Located at the Research Airport, DLR continues the tradition of the Deutsche Forschungsanstalt für Luft- und Raumfahrt (DFL), founded in 1936, and employs there about 1100 highly-qualified scientists and engineers.
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The German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) will be showcasing its latest research at this year's International Astronautical Congress (IAC) in Adelaide, Australia.
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 für 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.