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作 者:田川 廉英琦 雷小飞 罗大亮[2] TIAN Chuan;LIAN Yingqi;LEI Xiaofei;LUO Daliang(Xi'an Military Representative Bureau of Air Force Equipment,Xi'an 710043,China;Xi'an Aerospace Propulsion Institute,Xi'an 710100,China)
机构地区:[1]空军装备部驻西安地区军事代表局,陕西西安710043 [2]西安航天动力研究所,陕西西安710100
出 处:《火箭推进》2020年第6期82-89,共8页Journal of Rocket Propulsion
基 金:国家自然科学基金(11702204)。
摘 要:气体减压阀是轨姿控发动机的关键组件,其出口压力特性直接影响到发动机系统推力性能及工作可靠性。通过减压阀低温环境影响分析,得到了影响减压阀阀芯受力和调节特性的3种因素。对3种因素影响下减压阀低温动态特性进行仿真研究,获得了低温环境减压阀启动压力峰值和稳态出口压力的相对变化趋势,减压阀启动压力峰值和稳态出口压力值均随温度的降低而升高,低温环境膜片特性的变化是影响减压阀出口压力变化的主要因素,通过减压阀低温环境起动压力峰值和稳态出口压力的拟合函数,能够预估低温启动峰值和稳态出口压力,满足发动机低温环境系统参数设计。The gas pressure reducing valve is the key module of the orbital and attitude control engine,and its characteristic of outlet pressure directly affects the thrust performance and working reliability of the engine system.Through the influence analysis of the PRV in low temperature environment,there are three factors affecting the stress and regulation characteristics of the valve spool.The low-temperature dynamic characteristics of the PRV under the influence of three factors are simulated,and the relative change trend of the starting pressure peak and the steady-state outlet pressure of the PRV are obtained in low temperature environment.It is considered that the starting pressure peak and the steady-state outlet pressure of the valve increase with the decrease of temperature.The change of diaphragm characteristics in low temperature environment is the main factor affecting the change of outlet pressure.Through the fitting function of the starting pressure peak value and the steady-state outlet pressure of the PRV in low temperature environment,the low-temperature starting peak value and steady-state outlet pressure can be estimated to meet the requirements of the engine system parameter design in low tempserature environment.
分 类 号:V432[航空宇航科学与技术—航空宇航推进理论与工程]
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