| Citation: | LIU Guiyuan, YE Jinxiang, WANG Zhongrong, et al. Configuration design of aero-engine gear transmission based on graph theory and NSGA Ⅲ-TOPSIS algorithm[J]. Journal of Aerospace Power, 2025, 40（11）：20240157 doi: 10.13224/j.cnki.jasp.20240157
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An aero-engine gear transmission configuration design method based on graph theory and non-dominated sorting genetic algorithm Ⅲ- technique for order preference by similarity to ideal solution (NSGA Ⅲ-TOPSIS) was proposed. Using a six-accessory aero-engine gearbox as an example, 1 832 configurations were generated under 32 accessory layouts and 63 transmission chain arrangements, meeting the power transfer and model interference constraints. Subsequently, NSGA Ⅲ was used to obtain the gear transmission structural parameters, with design criteria including weight, frontal area, and load capacity. The best configuration was selected using the TOPSIS combined subjective and objective weights. Compared with the initial configuration, a 20% reduction in weight, a 16% decrease in frontal area, and an 18% reduction in the load on the split-power gear were achieved from the optimized configuration. This methodology can support the configuration design of the next generation’s high-power density aero-engine gear transmission.
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