摘要
为满足货运飞船表面电位控制的要求,研制了一种适用于航天器表面电位主动控制试验装置的供给单元。该供给单元重量轻、体积小、结构紧凑,具有氩气储存和微流量输出的功能,实测漏率≤1×10^(-4) Pa·L·s^(-1)。根据实测漏率数据和流量控制器的流量压力特性,建立供给单元输出氩气流量、气瓶压力随时间变化的数学模型,计算得出其有效在轨工作时间约为360 s。以上结果表明,该供给单元的在轨储存能力和微流量输出能力均可以满足任务需求。
In order to meet the requirements of the surface potential control test for a cargo spacecraft,a gas supply unit used for the active control of the surface potential of the spacecraft is developed.The assembly is characterized by lightweight,small volume and compact structure,with the functions of the argon storage and the micro flow output.According to the leakage rate data obtained by the test and the flow-pressure characteristics of the flow controller,a mathematical model of the gas supply unit is established to describe the argon flow rate and the pressure of the gas cylinder against time.The effective on-orbit working time is calculated based on the model.It is shown that the on-orbit storage capacity and the micro-flow output capability of the gas supply component can meet the task requirements.
作者
范旭丰
官长斌
张良
李恒建
刘庆海
孙立志
FAN Xufeng;GUAN Changbin;ZHANG Liang;LI Hengjian;LIU Qinghai;SUN Lizhi(Beijing Institute of Control Engineering;Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology;Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China)
出处
《航天器环境工程》
北大核心
2021年第1期83-87,共5页
Spacecraft Environment Engineering
基金
国家自然科学基金项目(编号:51805026)。
关键词
电位主动控制
供给单元
微流量
漏率
active potential control
gas supply unit
micro flow
leakage rate
