Aero-structural optimization of the HIRENASD model configuration

The HIRENASD (High Reynolds Number Aero-Structural Dynamics) wind-tunnel model is a widely used case for researches of aeroelasticity. In this paper, we discuss the suitability of HIRENASD model for aero-structural optimization studies. Firstly, to address the issue that the solid interior of this model doesn’t accord with real structure of wing, the counterpart of the HIRENASD model has been developed, whose structure is made of wingbox and we call it HMW (the HIRENASD Model with Wingbox structure). Besides, the same static aeroelastic deformation with the original model at a certain flight condition has been guaranteed. Using the HMW, a high-fidelity aero-structural optimization is carried out. When varying the configuration of shape and the structure parameters, the potential increase in lift-drag ratio and the decrease in total weight has been ascertained. The optimization increases the lift-drag ratio of the wing by 4% from 18.5 to 19.3 and reduces the total weight of the structure by more than 5%. The optimization presents an effective way for high-fidelity aeroelastic tailoring, but additional constraints is necessary for redesigning a more practical wing.