科技创新与应用2024，Vol.14Issue(5)：52-56,5.DOI:10.19981/j.CN23-1581/G3.2024.05.013
基于试飞数据的民用发动机部件特性修正方法
周超 1李密1
作者信息
- 1. 中国飞行试验研究院 发动机所,西安 710089
- 折叠
摘要
Abstract
Due to the fact that the nozzle is easy to be non-critical,and the working line of the engine is different under different Mach numbers,the accuracy of the whole engine model is poor only by using the ground test data to modify the characteristics of the engine components.So this paper based on the data of engine flight test,an improved method of deleting the characteristics of components is proposed,which transforms the engine non-design point calculation into the design point calculation.The number of target equations is reduced and the algorithm is simplified.As well the modification of component characteristics at different speeds and Mach numbers is considered.Based on this the mathematical model of the whole engine in the whole flight envelope is established.Compared with the flight test data,the error of all parameters in the whole flight envelope is less than 3%,and thrust error is less than 1%.关键词
航空发动机/发动机模型/部件特性/修正因子/部件特性删除法Key words
Aero Engine/engine model/component characteristic/correction factor/deletion of part characteristics分类
航空航天引用本文复制引用
周超,李密..基于试飞数据的民用发动机部件特性修正方法[J].科技创新与应用,2024,14(5):52-56,5.
