摘要
为从单元体层级给出民航发动机气路性能退化的理论依据,以CFM56-3发动机为研究对象,在使用特性图缩放法获取部件特性方程的基础之上,优化了风扇通用特性图缩放基准点的选取过程,提出特性图的曲面拟合方法,构建出稳态工况下符合特定转速条件的发动机部件级基准性能模型。通过引入故障因子生成故障系数矩阵,计算发动机监控参数随部件效率下降的偏离量,并与美国通用电气公司培训手册的指印图资料作对比,验证了融合风扇特性图缩放基准点优化及特性图曲面拟合方法的发动机稳态性能模型在气路性能退化分析中具有较好的精度和使用前景。
In order to provide a theoretical basis for the gas path performance degradation of civil aviation engines at the module level,the CFM56-3 engine was taken as the research object.Firstly,the characteristic map scaling method was used to obtain the component characteristic equations,and the selection process of the general fan characteristic map scaling reference point was optimized.A characteristic map surface fitting method was proposed to construct an engine component-level benchmark performance model that conformed to specific speed conditions under steady-state operating mode.Then,by introducing fault factors to generate a fault coefficient matrix,the deviation of engine monitoring parameters with the decrease in component efficiency was calculated and compared with the fingerprint diagram data in the General Electric Company training manual.The results show that the engine steady-state performance model integrating fan characteristic map scaling reference point optimization and characteristic map surface fitting methods has good accuracy and application prospects in gas performance degradation analysis.
作者
郭庆
黄启廉
陈金亮
GUO Qing;HUANG Qilian;CHEN Jinliang(School of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;Shandong Airlines Co.,Ltd.Yantai Branch,Yantai 264000,China)
出处
《北京航空航天大学学报》
北大核心
2025年第6期1935-1945,共11页
Journal of Beijing University of Aeronautics and Astronautics
基金
2022年天津市研究生科研创新项目(2022SKY156)。
关键词
民航发动机
气路分析
部件级建模
缩放基准点优化
曲面拟合
civil aviation engine
gas path analysis
component-level modelling
scaling reference point optimization
surface fitting
