摘要
针对航天器在轨期间的高精度姿轨控机动和无阻尼调节需求,电推力器贮供单元必须采用比例流量控制阀以实现推进剂流量的高精度、宽范围、低噪声调控。目前正在发展的比例流量控制阀主要利用材料的应变特性和微小流量通道的节流作用,通过调节和控制材料的应变量进而改变流道的结构尺寸,实现推进剂的快速、稳定、连续可调。文章系统介绍了国内外比例流量控制阀的发展概括,并在分析国内未来航天使命应用需求的基础上,对该技术的发展趋势进行了分析和展望,以期对比例流量控制阀的研制提供指导。
Aiming at the requirements for high-precision of attitude and orbit control mechanism and undamped adjustment of spacecraft in orbit,proportional flow control valve must be used in the propellant feed unit of electric thruster.It is possible to regulate propellant flow in a high-precision,low-noise and wide way. Strain properties for materials and throttling effort of micro-flow channels are employed to achieve rapid,stable and continuously adjustment of propellant by adjusting and controlling the material strain to change the size of the flow channel structure. Based on the domestic space mission application requirements in the future,this thesis introduces the development of proportional flow control valve and analysis its trend to provide guidance on its development
作者
胡竟
张天平
杨福全
李沛
HU Jing;ZHANG Tian-ping;YANG Fu-quan;LI Pei(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China)
出处
《真空与低温》
2017年第1期13-19,共7页
Vacuum and Cryogenics
基金
真空低温技术与物理重点实验室基金(9140C550206130C5503)
关键词
电推力器
比例流量控制阀
磁致伸缩材料
压电陶瓷材料
electric thruster
proportional flow control valve
magnetostrictive materials
piezoelectric ceramic materials
