求进气道与发动机共同工作点的计算法

A METHOD FOR CALCULATON OF COOPERATING POINT OF INLET AND ENGINE

关键词:  进气道  发动机  性能  匹配  计算方法

Key words:  Inlet  Engine  Performance  Macthing  Computation method

摘要:

本文建立了由进气道节流特性风洞实验数据和发动机流量特性求其共同工作点的计算法.应用此法能准确计算任意给定飞行条件、大气条件和发动机工作条件下进气道性能数据.与国内进气道设计中常使用的图解法相比,这个计算法便于建立推进系统一体化的数学模型,并能提高数据的准确性,减轻工作量.

Abstract:

A method for calculation of cooperating point of inlet and engine according to testing data of inlet performance and flow performance of engine is presented in the paper. By the method, performance data of inlet can be precisely calculated in any flight condition and engine throttle. Compared with the graphic method used widely at present, the method in the paper can be used to set a mathematical model based on inlet performance data from wind tunnel test and given engine performance as well as working efficiency is raised and inlet performance data by calculating metod is more precise.