一种发动机小转速条件下的部件特性外推方法  

Extrapolation Method of Component Characteristics of Engine in Low Speed

作　　者：曹高峰[1] 原博[1] 郭斌[1] 

机构地区：[1]中国飞行试验研究院发动机所,陕西西安710089

出　　处：《工程与试验》2012年第4期30-32,共3页Engineering and Test

摘　　要：在对启动过程的数值模拟研究中,一个最主要的问题就是要获得发动机部件低转速条件下的特性线。然而,目前几乎所有的发动机部件特性图都没有给出慢车转速以下的特性线。为了解决这一问题,本文发展了一种利用已知高转速条件下的特性线,进行多次曲线预测和拟合来求出小转速特性线的方法。In the numerical simulation of the engine starting, the most important problem is to get the component characteristic line of engine in low speed. However, almost all the component characteristic maps of jet engine don＇t give the characteristic line in low speed. In order to solve this problem, in this paper, a method is developed that the characteristic line in high speed is used to obtain the characteristic line in low speed by the multiple curve prediction and curve fit- ting.

关 键 词：发动机小转速 部件特性 曲线拟合 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]