低温液体火箭发动机氢主阀动态特性仿真分析  

The Simulation and Analysis of Hydrogen Main Valve of Cryogenic Liquid Rocket Engine

作　　者：钟梦妮 杜兰君 李文凯 ZHONG Mengni;DU Lanjun;LI Wenkai(Beijing Aerospace Propulsion Institute,Beijing,100076)

机构地区：[1]北京航天动力研究所,北京100076

出　　处：《导弹与航天运载技术（中英文）》2023年第2期25-30,共6页Missiles and Space Vehicles

摘　　要：低温液体火箭发动机阀门多采用气控菌阀,阀门开关动态特性对发动机启动和关机性能存在重要影响。因此,在设计阶段获取准确的阀门开关动态特性至关重要。针对某型低温膨胀循环发动机氢主阀,采用AMESim仿真软件对其工作过程进行动态特性仿真,以获得阀门启闭动作时间与启闭过程中出口压力变化情况,并将仿真结果与试车数据进行对比,结果表明:仿真结果与试车数据变化趋势基本一致,低温下阀门打开时间变长,关闭时间不变。同时对影响阀门启闭动作时间的参数进行分析,结果显示阀门动作时间随开关作动力增大而减少,随控制腔容积增大而增加。因此,提出的气控菌阀动态特性仿真方法具有较高的可行性和准确性,可用于各类气控菌阀动态特性分析,为气控菌阀设计提供了参考依据,有助于缩短产品研制周期,降低生产成本。The valve of cryogenic liquid rocket engine mostly adopts air-controlled valve structure.The dynamic characteristic of valve has important influence on engine start-up and shut-down performance.Therefore,it is very important to obtain accurate valve dynamic characteristics at the design stage.Aimed at the hydrogen main valve of a cryogenic expander cycle rocket engine,the dynamic performance of the valve is simulated by using the simulation software AMESim,and the simulation results are compared with the test data.The results show that the simulation results are in good agreement with the test data,and valve opening time becomes longer at low temperature and valve closing time remains the same.The valve movement time shortens with the pressure of control chamber,and increases with the control chamber volume.Therefore,the simulation method proposed has high feasibility and accuracy,which can be used to optimize the dynamic performance parameters of all kinds of gas-controlled valve and to provide reference for the design of gas-controlled valve.

关 键 词：低温液体火箭发动机 氢主阀 动态特性 优化分析 

分 类 号：TH136[机械工程—机械制造及自动化]