变推力发动机混合比调节器动静特性计算方法

A CALCULATING METHOD TO THE DYNAMIC AND STATIC PERFORMANCE OF FUEL FLOW REGULATOR FOR THE VARIABLE THRUST ENGINE

关键词:  可调推力火箭发动机  发动机控制系统  动态特性  静态特性

Key words:  Controllable thrust rocket engine  Engine control system  Dynamic characteristic  Static characteristic

摘要:

本文以变推力发动机混合比调节器为例,给出了直接作用式调节器动静特性的计算方法.类似的计算,以往是分别进行的,同时未计及对环形缝隙的阻尼和橡胶膜片的刚度,因而计算值与实测值之间的偏差较大.本文考虑到环形缝隙的阻尼和橡胶膜片的刚度,并以此来计算调节器的动静特性.试验证明,该方法是可行的.

Abstract:

A method for calculating dynamic and static characteristics of direct-acting regulator of a variable thrust engine is suggested in this paper.In the existing calculation methods the dynamic and the static were made separately, and the stiffness of the rubber diaphragm and the fluid damping of the annular gap were ignored,which caused a significant deviation between reckoning value and test value.In consideration of factors mentioned above,the paper has enumerated thedynamic and static performance of the regulator.The validation of the method suggested in this paper is confirmed by the experimental results.