23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-P14

STRUCTURAL CONCEPTS AND AERODYNAMIC DESIGN OF SHOCK CONTROL BUMPS

W. Wadehn, A. Sommerer, T. Lutz, D. Fokin, G. Pritschow, S. Wagner
Institute for Control Engineering (ISW), Seidenstrasse 36, 70174 Stuttgart, Germany & Institute for Aerodynamics and Gas Dynamics, Pfaffenwaldring 21, 70550 Stuttgart, Germany

Keywords: adaptivewing, shock control bump, shape adaptive systems, optimisation

The design of adaptive structures for enhanced system performance in aircraft applications is a highly interdisciplinary topic. In this paper a combined design under consideration of the aerodynamic as well as the structural requirements of a shock control bump (SCB) is presented. Using a new parametrisation technique for the shape of the SCB, the aerodynamic optimisation is performed while at the same time producing an actuator optimal solution for each design. An actuation concept will be shown which is able to generate a bump with adaptable maximum position and height according to the current flight condition. A new control is presented which applies the optimal solution to an experimental demonstrator.

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