Component Matching Based on Low Bypass Ratio Mixed Exhaust Turbofan Engine

作     者：Zheng Xilong Wu Tieying Ji Honghu 

作者机构：College of Energy and Power EngineeringNanjing University of Aeronautics and Astronautics 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2018年第35卷第S1期

页      面：9-15页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：supported in part by the Fundamental Research Funds for the Central Universities(No.NZ2016103) 

主　　题：turbofan engine low bypass ratio off-design component matching OOP performance analysis 

摘      要：In order to study component matching which exists in off-design situation at the initial design stage of turbine engine,by establishing performance analysis model of low bypass ratio mixed flow turbofan engine and components characteristic data,and by applying Newton-Raphson method to solve the nonlinear equations of offdesign points in flying envelop,the factors which affect matching between engine components are *** results show that low pressure turbine(LPT)must not operate in a critical condition,and the partial derivative(slope)of pressure ratio to similitude mass flow ratio of working point in LPT characteristic map affects the stability of *** smaller the slope is,the more stable the engine *** addition,the engine is more stable when the fan characteristic map is steep.