| Citation: | WANG Y W，LEI R W，WANG H. Structural topology optimization of flying wing aircraft[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（2）：482-490 （in Chinese） doi: 10.13700/j.bh.1001-5965.2021.0262
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Flying wing aircraft will become the mainstream of future aircraft due to its high aerodynamic efficiency; however, its performance improvement is limited by structural weight. Structural optimization is an important technique to reduce structural weight. A topology optimization model is thus established based on the internal structure of flying wing aircraft with the compliance of the aircraft skin as the objective function. The optimal arrangement of this structure is studied, and the effect and weight reduction mechanism of curvilinear spars are investigated in the structural optimization of the aircraft. The rebuilt model and the standard model are developed according to the topology optimization results and the Boeing second generation structure design respectively, using sizing optimization to evaluate the effect of topology optimization. Results show that compared with the standard model, the rebuilt model decreases the mass by 14.53% with the same compliance. The compliance of the reconstructed model is decreased by 47.90% and the maximum
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