Design-Oriented Stress-Based High-Fidelity Aeroelastic Gust Computations

Aeroelastic response of a wing structure due to a discrete gust is commonly computed with linear doublet lattice aerodynamics, corrected in some way for transonic flows. The aeroelastic response is computed in the modal space, and the key output of interest is some linear function of those modes, for example root bending moment. This work seeks to expand this analysis to include stress-based outputs (with the modal acceleration method) and aerodynamics based on computational fluid dynamics, as well as adjoint derivatives with respect to shape and structural sizing variables. Examples are shown for generic wingbox structures under both
prescribed oscillatory loading and discrete aeroelastic gust loading.