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姿控动力系统动态特性仿真及试验研究(第二届空天前沿大会增刊)

张方1,向伟彬1,肖凯1,肖思齐1,项亮1,王兵2   

  1. 1. 湖北航天技术研究院总体设计所
    2. 清华大学航天航空学院
  • 收稿日期:2025-05-30 修回日期:2025-06-11 出版日期:2025-06-16 发布日期:2025-06-16
  • 通讯作者: 王兵

Experimental and Modeling study of Attitude Control Propulsion System Transients

  • Received:2025-05-30 Revised:2025-06-11 Online:2025-06-16 Published:2025-06-16

摘要: 本研究基于AMESim软件建立了姿控动力系统动态特性仿真模型,用于研究姿控动力系统的水击压力特性,以及水击压力脉动对发动机性能参数的影响。在仿真模型中加载姿控动力系统的地面试车时序,将仿真结果与实测试验数据进行对比,表明该模型具有良好的预示精度。研究结果表明,双组元发动机点火/关机过程中产生的水击压力波,会在短时间内严重影响系统中其他分机的正常工作,尤其是大推力发动机关机时产生的水击压力波影响显著。氧化剂管路水击压力峰值明显高于燃料管路,可以通过缩短推进剂供应管路长度、增大管路通径等措施降低水击危害。

关键词: 姿控动力系统, AMESim, 动态特性, 水击, 发动机。

Abstract: This study develops a transient simulation model of the attitude control propulsion system (ACPS) based on AMESim software, aiming to investigate the hydraulic pressure characteristics of the ACPS and the effects of water hammer pres-sure pulsations on engine performance parameters. The ground test sequence of the propulsion system is implemented in the simulation model, comparative analysis between simulation results and experimental test data demonstrates that this model exhibits satisfactory predictive accuracy. The research findings reveal that water hammer pressure waves generated during ignition/shutdown processes of bipropellant liquid rocket engine, particularly during high-thrust engine shut-down, can significantly disrupt the normal operation of other subsystems within short durations. Notably, the oxidizer pipe-lines exhibited significantly higher water hammer pressure peaks compared to the fuel pipelines. The potential hazards induced by water hammer effects could be effectively mitigated by implementing measures such as shortening the length of the propellant feed line and increasing the pipeline diameter.

Key words: Attitude Control Propulsion System, AMESim, Dynamic characteristic, water hammer, engine.

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