液路耦联多发动机系统开关机动态特性研究

推进技术 ›› 1999, Vol. 20 ›› Issue (4): 22-25.

液路耦联多发动机系统开关机动态特性研究

林西强,程谋森,刘昆,张育林,李威

国防科技大学航天技术系;国防科技大学航天技术系;国防科技大学航天技术系;国防科技大学航天技术系;上海动力机械研究所

发布日期:2021-08-15

DYNAMIC CHARACTERISTICS DURING STARTUP AND SHUTDOWN OPERATION OF LIQUID FEED LINE COUPLED MULTI ENGINE SYSTEM

Shanghai Inst.of Power Machinery, Shanghai, 200233;Shanghai Inst.of Power Machinery, Shanghai, 200233;Shanghai Inst.of Power Machinery, Shanghai, 200233;Shanghai Inst.of Power Machinery, Shanghai, 200233;Shanghai Inst.of Power Machinery, Shanghai, 200233

Published:2021-08-15

摘要/Abstract

摘要： 通过对液路耦联的多发动机系统动态特性仿真研究表明：多发动机开关机时水击对相互间性能影响比较大，若设计不合理，有可能导致异常关机。给出的动力学模型可以用于空间飞行器耦联多发动机系统的结构及工作模式设计和解释一些发动机试车现象。

关键词: 液体推进剂火箭发动机;火箭发动机燃料系统;水冲击;动力学仿真;动态特性

Abstract: The dynamic characteristics of liquid feed line coupled multi engine system was studied. The results show that the dynamic characteristics is greatly affected by water hammer during the operation of engine startup and shutdown. Seriously, engine abnormal shutdown caused due to the irrational design. The dynamic model given here can be applied directly to the design of engine structure and operation modes,and to explain relevant phenomena occurring in the engine test

Key words: Liquid propellant rocket engine;Rocket engine fuel system;Water impingement;Dynamic simulation;Dynamic characteristic

林西强,程谋森,刘昆,张育林,李威. 液路耦联多发动机系统开关机动态特性研究[J]. 推进技术, 1999, 20(4): 22-25.