Title of Paper:Aero-structural multi-disciplinary optimization method for three-dimensional wing

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Affiliation of Author(s):航空学院

Journal:Hangkong Dongli Xuebao

Abstract:An aero-structural multi-disciplinary optimization method for 3D wing was developed using Euler equations, continuous adjoint method, FFD(free-form deformation) strategy and a linear quadrilateral shell model. The objective function is the weighted sum of drag coefficient and the structural weight of the wing box. The design variables include the control points of FFD volume and the thicknesses of ten skin segments. The gradients of lift coefficient and drag coefficient with respect to design variables were adopted by continuous adjoint method, the gradients of wing box weight were acquired directly, and the gradients of the stress were obtained with finite difference method. The aero-structural multi-disciplinary optimization method was applied to a high aspect ratio wing in transonic regime, and a comparison between the results from aero-structural analysis of single-disciplinary optimization and aero-structural optimization was presented. It showed that the drag coefficient and the weight can decrease simultaneously through aero-structural optimization while the constraints were satisfied to keep the results reasonable. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.

ISSN No.:1000-8055

Translation or Not:no

Date of Publication:2018-05-01

Co-author:Xu, Zhaoke,Gao, Yisheng

Correspondence Author:Xia Jian