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

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.

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