Ein Beitrag zur numerischen Strukturauslegung aktiver Rotorblätter unter Berücksichtigung der Wechselwirkung von Strömung und Struktur (English shop)

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The use of active rotor blades offers the potential to reduce the noise emissions and vibrations of helicopters. This makes it possible to increase passenger comfort, reduce the loads on the helicopter structure and mitigate environmental noise impact. However, a large number of boundary conditions must be taken into account when designing such systems, and their complex configuration entails a multitude of structural properties to be adjusted. This work presents a numerical method for solving such a highly complex design task.

The methodology consists of two fundamental components. While the numerical optimisation procedure based on evolutionary algorithms systematically further develops the structures, the parameterised evaluation model computes the basis for the optimisation decisions by determining the structural behaviour of the various variants. The interaction between the flow and the active structure is also taken into account, allowing the aerodynamic effectiveness to be included in the evaluation of the structural variants.