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Volume 49 Issue 12
Dec.  2023
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Journal of Beijing University of Aeronautics and Astronautics  > 2023  >  49(12): 3343-3354.
LI X Y，WAN Z Q，WANG X Z，et al. Aeroelastic optimization for overall design of joined wing[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（12）：3343-3354 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0074
Citation: LI X Y，WAN Z Q，WANG X Z，et al. Aeroelastic optimization for overall design of joined wing[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（12）：3343-3354 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0074
shu

Aeroelastic optimization for overall design of joined wing

doi: 10.13700/j.bh.1001-5965.2022.0074
  • 1.

    School of Aeronautic Science and Engineering，Beihang University，Beijing 100191，China

  • 2.

    Institute of Unmanned System，Beihang University，Beijing 100191，China

Funds:  Open Fundation of Zhejiang Key laboratory of General Aviation Operation Technology (General Aviation Institute of Zhejiang JianDe) (JDGA2020-4)
More Information
  • Corresponding author: E-mail：wangxiaozhemvp@buaa.edu.cn
  • Received Date: 15 Feb 2022
  • Accepted Date: 11 Mar 2022
  • Publish Date: 28 Mar 2022
    Abstract

  • Due to the connection between the front wing and the rear wing, the aerodynamic and structural characteristics of the joined wing aircraft are different from those of the conventional layout aircraft. The interconnected wings form a complex over-constrained system that has numerous layout parameters, increased multidisciplinary design space and analysis difficulty. The aeroelastic optimization based on the engineering beam theory is carried out to research the influence of different layout parameters on the overall performance of the joined wing, mainly including joint locations, forward/backward sweep angle, positive/negative dihedrals, plate height, taper ratio, and other parameters. Aiming at the minimum structural weight, under the constraints of static aeroelasticity and flutter, the parameters of the wing box section of the joined wing are designed by a genetic algorithm, and the lift-drag characteristics of the optimized model are analyzed by using a high-precision computational fluid dynamics/ computational structural dynamic （CFD/CSD）coupling method. Aeroelastic optimization is used to determine the linked wing's layout characteristics for the best possible structural and aerodynamic performances. The results indicate that the optimal solution set for each important parameter of the joined wing can discover the laws of the joined wing design and provide support for the design.

     

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