Study on multidisciplinary aerodynamic-structural design optimization of wings based on high fidelity models

• 1、Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics and Astronautics

Abstract：Low Degree-of-freedom Collaborative Optimization was applied to solve multidisciplinary aerodynamic-structural design optimization of a light aircraft wing. The structure subsystem and the aerodynamics subsystem are parallel. Aerodynamics performance was calculated with Fluent. Structure analysis was performed using MSC. Patran and Nastran. Based on Catia, Gambit and Fluent, an aerodynamics automatic analysis model was proposed. In order to transfer aerodynamics load among different subsystems, a quartic response surface with three coefficients was developed to fit lift distribution. Based on the aerodynamics automatic analysis model and the quartic response surface with three coefficients, a construction method of aerodynamics analysis surrogate models for high fidelity aerodynamics analysis was proposed. The results show that Low Degree-of-freedom Collaborative Optimization can be applied to multidisciplinary design optimization of wings with high fidelity models successfully.

Keywords： multidisciplinary design optimization collaborative optimization low degree-of-freedom collaborative optimization high fidelity models wing