南京航空航天大学学报2025，Vol.57Issue(4)：681-692,12.DOI:10.16356/j.1005-2615.2025.04.010
涡轴发动机几何参数-部件-整机性能建模及其应用
Modeling of Geometric Parameters-Components-Overall Performance in Turboshaft Engines and Their Applications
李泽琪 1席龙 1邓浩民 1周文祥 1孙思琦2
作者信息
- 1. 南京航空航天大学能源与动力学院,南京 210016
- 2. 中国电子产品可靠性与环境试验研究所,广州 511370
- 折叠
摘要
Abstract
Aiming at the problem of performance dispersion of domestic turboshaft engines in batch production,a model-building method integrating manufacturing geometric parameters,component performance,and overall engine performance is proposed.Firstly,the manufacturing geometric parameters and factory performance parameters of important components from 200 new engines are obtained,and the key manufacturing geometric parameters of important engine components are screened by the Spearman correlation coefficient method.Secondly,based on the factory performance parameters of new engines and component-level models,the characteristic diagrams of important engine components are modified using component characteristic correction factors.Based on the particle swarm optimized support vector regression(PSO-SVR)method,the corresponding relationship between the key manufacturing geometric parameters of important engine components and component characteristic correction factors is established.Finally,a model of key manufacturing geometric parameters of important engine components-component performance-overall engine performance is established.The verification results show that the prediction error of the model for the overall engine performance is less than 5%at the 25%rated power,and less than 3%at 50%,75%,95%,100%,and 105%rated powers.The model can simulate the influence of key manufacturing geometric parameters on the dispersion of engine performance and enable the prediction of overall engine performance before engine testing.关键词
分散性/几何参数/修正因子/逆流路法/支持向量回归/涡轴发动机Key words
dispersibility/geometric parameter/correction factor/reverse flow method/support vector regression(SVR)/turboshaft engine分类
航空航天引用本文复制引用
李泽琪,席龙,邓浩民,周文祥,孙思琦..涡轴发动机几何参数-部件-整机性能建模及其应用[J].南京航空航天大学学报,2025,57(4):681-692,12.
