神舟载人飞船流体回路动态仿真研究

Study on Dynamic Simulationof Liquid Loop in Shenzhou Manned Spacecraft

以神舟载人飞船流体回路为物理模型,分析了各个部件的工作原理、流动和传热特性,建立起辐射器、泵、阀门、补偿器、冷板和换热器的部件模型。在此基础上建立了流体回路模型,并引入实际控制策略。模型的仿真数据与航天器热平衡试验数据进行对比,结果表明,模型对流体回路各点的温度、压力、系统的流量分配和液体体积变化的补偿都能较好的进行动态模拟,并能够模拟系统控制策略的动态执行情况,可用于流体回路系统控制算法和策略的优化分析。

In order to simulate the liquid loop in Shenzhou manned spacecraft , the models of the compo-nents were set up including the radiator , the pump, the valve, the accumulator, the cool plate and the heat-exchanger by analyzing the working principle , the flow and heat transfer performance of each com-ponents .Base on the present works and the control algorithm , a control model of the liquid loop was set up.The comparison with the test data demonstrates that the model can well simulate the dynamic charac-teristics of the liquid loop system , including the temperature , the flow distribution and the volume change of the liquid.The models can be used to optimize the control algorithm and control strategy .