双组元统一推进系统气路动态特性分析
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摘要
针对双组元统一推进系统的气路建立了零维非线性数学模型,对气路系统从启动到额定工况直至关机阶段的工作全过程进行了数值仿真,仿真结果与试验数据一致,验证了模型的正确性.在此基础上,探讨了减压阀和单向阀的结构参数对于气路系统动态特性的影响规律,研究表明:单向阀的流量特性和开启特性使其充当了缓冲阀的作用,提高了气路系统的稳定性;同时减小反馈孔直径、增大阀芯阻尼可以提高减压阀的稳定性.
A zero-dimension non-linear mathematical model for gas section of bipropellant propulsion system is developed in this paper. The dynamic response characteristics including start-up,steady operating and close for gas system is simulated. The simulation results are in good agreement with the test data and the mathematical model is validated. Based on the simulation model,the different parameters of pressure reducing valve( PRV) and check valve( CV) that influence the gas system performance are analyzed.The results show that the flow character and open process of CV can improve the stability of gas system;meanwhile the stability of PRV can be improved via decreasing the diameter of feedback orifice and increasing the damping of valve active module.
A zero-dimension non-linear mathematical model for gas section of bipropellant propulsion system is developed in this paper. The dynamic response characteristics including start-up,steady operating and close for gas system is simulated. The simulation results are in good agreement with the test data and the mathematical model is validated. Based on the simulation model,the different parameters of pressure reducing valve( PRV) and check valve( CV) that influence the gas system performance are analyzed.The results show that the flow character and open process of CV can improve the stability of gas system;meanwhile the stability of PRV can be improved via decreasing the diameter of feedback orifice and increasing the damping of valve active module.
引文
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[5]陈阳,高芳,张振鹏,等.低温推进剂贮箱增压系统分布参数数值仿真(Ⅰ)贮箱的有限体积模型[J].航空动力学报,2008,23(2):323-328.CHEN Y,GAO F,ZHANG Z P,et al.Distributed parameter numerical simulation for the transients of cryogenic propellant tank pressurization system(Ⅰ)finite volume model of tank[J].Journal of Aerospace Power,2008,23(2):323-328.
[6]陈阳,张振鹏,杨思锋,等.低温推进剂贮箱增压系统分布参数数值仿真(Ⅱ)增压系统数值模型与仿真结果[J].航空动力学报,2008,23(2):329-335.CHEN Y,ZHANG Z P,YANG S F,et al.Distributed parameter numerical simulation for the transients of cryogenic propellant tank pressurization system(Ⅱ)numerical model and simulation results of pressureization system[J].Journal of Aerospace Power,2008,23(2):329-335.
[7]尹文娟,魏延明.减压阀动态响应特性与稳定性研究[J].空间控制技术与应用,2013,(39)3:24-29.YIN W J,WEI Y M.Analysis on responding characteristics and stability of pneumatic pressure reducing valve[J].Aerospace Control and Application,2013,(39)3:24-29.
[2]SEKITA R,MATSUDA M,NAKAMURA R.Pressure oscillation analyses of the pressure regulator for the H-IIA propulsion system[C]∥The 26thAIAA/ASME/SAE/ASEE Joint Propulsion Conference.Washington D.C.:AIAA,2003.
[3]HEDAYAT A,STEADMAN T E,et al.Pressurization,pneumatic,and vent subsystems of the X-34 main propulsion system[C].The 34thAIAA/ASME/SAE/AS-EE Joint Propulsion Conference.Washington D.C.:AIAA,2000.
[4]HOLT K,MAJUMDAR A.Numerical modeling and comparison of propulsion test article helium pressurization system[C]∥The 36thAIAA/ASME/SAE/ASEEJoint Propulsion Conference.Washington D.C.:AIAA,2000.
[5]陈阳,高芳,张振鹏,等.低温推进剂贮箱增压系统分布参数数值仿真(Ⅰ)贮箱的有限体积模型[J].航空动力学报,2008,23(2):323-328.CHEN Y,GAO F,ZHANG Z P,et al.Distributed parameter numerical simulation for the transients of cryogenic propellant tank pressurization system(Ⅰ)finite volume model of tank[J].Journal of Aerospace Power,2008,23(2):323-328.
[6]陈阳,张振鹏,杨思锋,等.低温推进剂贮箱增压系统分布参数数值仿真(Ⅱ)增压系统数值模型与仿真结果[J].航空动力学报,2008,23(2):329-335.CHEN Y,ZHANG Z P,YANG S F,et al.Distributed parameter numerical simulation for the transients of cryogenic propellant tank pressurization system(Ⅱ)numerical model and simulation results of pressureization system[J].Journal of Aerospace Power,2008,23(2):329-335.
[7]尹文娟,魏延明.减压阀动态响应特性与稳定性研究[J].空间控制技术与应用,2013,(39)3:24-29.YIN W J,WEI Y M.Analysis on responding characteristics and stability of pneumatic pressure reducing valve[J].Aerospace Control and Application,2013,(39)3:24-29.