Bernd Stickan, Reik Thormann, Michael Wrightson, Paolo Mastracci, Thomas Wilson

DOI Number: N/A

Conference number: IFASD-2024-169

This paper proposes a method to combine dynamic aerodynamic and structural data at different steady conditions to allow a p-k-based flutter process for constant mass and Mach. The full aircraft application case with aspect ratio 17 is used to show the relevance of mass- and altitude-dependent unsteady aerodynamics, but it also shows that for a relatively flexible wing nonlinear structural effects cannot be neglected. For the aerodynamic modelling, linearised RANS CFD aerodynamics are used. A detailed FEM is employed for structural modelling, which is deformed according to the steady conditions to cover geometric nonlinearities in the flutter process.

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In Categories: 1. IFASD 2024, 1.Events, Computational Aeroelasticity
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