R. Radespiel, W. Heinze, L. Bertsch

Careful analysis of long-term objectives of air transport indicates that the needed progress in vehicle performance cannot be achieved by following the current, evolutionary technology development. Particular examples are noise reduction and high-lift performance at take-off and landing. The long-term objectives call for research on the fundamentals for a new segment of commercial low-noise transport aircraft with short take-off and landing capability, which allows a much better integration into the metropolitan areas of the industrialised society. Such research is in the focus of the Collaborative Research Centre CRC 880. The Centre aims at drastic reductions of airframe noise by developing the fundamentals of noise reducing surfaces in aero-acoustic and aerodynamic design. A promising approach towards reducing engine noise shields the noise by suited configuration design. Improving the efficiency of active high lift requires reducing the flow actuation power. For this objective the benefits of form-variable leading edges, by exploiting the synergies of suction and blowing in active high-lift flaps with spanwisely distributed compressor units, and finally the potentials of dynamic flow control are explored. The advances obtained in noise reductions and in effective high-lift technologies are assessed using fully iterated aircraft designs. The Centre also seeks new knowledge on the dynamic behaviour of aircraft with active high lift during flight in the atmospheric boundary layer. Therefore, the flight mechanics of critical landing manoeuvers is analysed along with exploring the fundamentals of unsteady flow around active high-lift wings and the aero-elastic reactions of the wing structure on flight loads.

Deutscher Luft- und Raumfahrtkongress 2017, München

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2018

Conference Paper

englisch

21,0 x 29,7 cm, 15 Seiten

urn:nbn:de:101:1-201803092309

High Lift, Aircraft Noise

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09.03.2018