Multi-point aero-structural design optimization of wings considering drag-divergence constraints

被引：1
|
作者：
Zhang Y. [1 ]
Bai J. [1 ,2 ]
Qu F. [1 ]
机构：
[1] School of Aeronautics, Northwestern Polytechnical University, Xi′an
[2] Unmanned System Research Institute, Northwestern Polytechnical University, Xi′an
来源：
Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University | 2023年 / 41卷 / 02期
关键词：
aero-structural design optimization; discrete adjoint method; drag-divergence; gradient-based optimization; large civil aircraft;
D O I：
10.1051/jnwpu/20234120241
中图分类号：
学科分类号：
摘要：
Considering the drag-divergence performance as a constraint, this paper presents a multi-point aerostructural design optimization of wings on a wing-body-tail-engine configuration of long-range dual-aisle civil aircraft by using a gradient-based method based on the discrete adjoint method. Firstly, the accuracy of the coupled aerostructural analysis method used in this paper was validated with DLR-F6 wing-body configuration. Then a wing aerostructural design optimization based on a dual-aisle civil aircraft is offered. The drag coefficient of the optimized configuration in every state decreased, which was reduced by 13.67 counts at the cruise condition, the difference in drag coefficient from Mach 0.85 to Mach 0.87 was decreased from 28.52 counts to 18.98 counts, indicating its drag-divergence performance has been improved undoubtedly. Finally, we compared the performance among the multi-point aero-structural optimized configuration, the single-point aerodynamic optimized configuration and the single-point structural optimized configuration. The results show that the multi-point aero-structural design optimization considering drag-divergence performance has great potential to gain a design configuration with better comprehensive and practical performance compared with a single-point optimization in a single discipline. ©2023 Journal of Northwestern Polytechnical University.
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页码：241 / 252
页数：11
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