The concept of load redistribution provides a further way for gust load alleviation besides dynamic flap deflections. In this context, URANS CFD-CSM simulations were performed for an elastic and URANS for a rigid high aspect ratio wing, respectively, using a load dominant, vertical 1-cos gust. Static and dynamic load redistribution using spanwise segmented trailing and leading edge flaps were investigated. A higher gust load alleviation potential is demonstrated with the load redistribution using dynamic flap deflections. In this case, the gust-induced bending moment at the wing root is reduced by 77.5% with the utilization of leading and trailing edge flaps.

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Gust Load Alleviation on an Elastic High Aspect Ratio Wing by Means of Load Redistribution

  • Marco Hillebrand,
  • Thorsten Lutz,
  • Ewald Krämer

摘要

The concept of load redistribution provides a further way for gust load alleviation besides dynamic flap deflections. In this context, URANS CFD-CSM simulations were performed for an elastic and URANS for a rigid high aspect ratio wing, respectively, using a load dominant, vertical 1-cos gust. Static and dynamic load redistribution using spanwise segmented trailing and leading edge flaps were investigated. A higher gust load alleviation potential is demonstrated with the load redistribution using dynamic flap deflections. In this case, the gust-induced bending moment at the wing root is reduced by 77.5% with the utilization of leading and trailing edge flaps.