| Citation: | LU Kaiyi, LIU Huaiju, LIAO Changjun, et al. Lightweight design of accessory transmission based on heuristic algorithm[J]. Journal of Aerospace Power, 2025, 40（4）：20220911 doi: 10.13224/j.cnki.jasp.20220911
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To solve the problem that conventional design methods are unable to meet the comprehensive performance design requirements of accessory transmission systems, such as high reliability, lightweight, and low cost, due to the continuous improvement of power density and lightweight level of aero-engines, a lightweight design method of transmission structure based on the heuristic search non-dominated sorting genetic algorithm Ⅱ (HS-NSGA Ⅱ) was proposed, and the optimal design of structural parameters of an aero-engine accessory gearbox transmission was launched. It was found that the optimization of gear tooth number and displacement had the most significant effect on the lightweight degree of transmission. The introduction of surface hardening processes, such as shot peening, can further improve the service performance of the transmission. Compared with the initial design, the maximum weight of the gear set was reduced by 21.0%, and the maximum relative slip rate of the system was reduced by 11.4%. This can provide a methodological support for the lightweight design of the aero-engine accessory gear transmission.
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