节流式燃/氧分离组合固体火箭发动机动态工作过程数值研究  

Numerical study on dynamic operation of a throttling segregated fuel-oxidizer solid rocket motor

作　　者：王革[1] 杨铭 王富祺 杨帅 关奔[1] WANG Ge;YANG Ming;WANG Fuqi;YANG Shuai;GUAN Ben(Collage of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China;Beijing Institute of Precise Mechatronics and Controls,Beijing 100076,China)

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001 [2]北京精密机电控制设备研究所,北京100076

出　　处：《固体火箭技术》2024年第2期181-187,共7页Journal of Solid Rocket Technology

摘　　要：利用商业软件ANSYS Fluent对节流式燃/氧分离组合固体火箭发动机动态工作过程进行数值研究,揭示该发动机基本动态工作过程以及节流阀作动速度的影响。结果表明,节流阀作动会导致发动机富氧燃烧室压强、节流阀出口质量流量以及发动机推力出现负调现象;节流阀作动速度差异不影响发动机调节后的稳定工作状态;随着节流阀作动速度增大,发动机达到稳定工作状态所需时间逐渐缩短,实现性能调控的响应速度增快,但发动机各参数负调量也随之增大,从而增加了发动机发生振动的风险。The dynamic operation of a throttling segregated fuel-oxidizer solid rocket motor was numerically investigated in the present study using commercial software.The basic dynamic operation of the throttling segregated fuel-oxidizer solid rocket motor and the influence of throttling speed on motor operation were revealed.The results show that the throttle valve actuation can lead to a negative regulation phenomenon of oxygen-rich combustion chamber pressure,the mass flow rate at the throttle outlet and the motor thrust.The throttling speed does not affect the stable operating state of the motor after regulation.With the increase of throttling speed,the time required for the motor to reach its stable operating state is shortened,and the response speed of the motor to achieve performance control is increased,but the magnitudes of negative regulation of the motor operation parameters are also increased,which increases the risk of motor vibration.

关 键 词：固体火箭发动机 燃/氧分离发动机 动态调节过程 数值模拟 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]