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在10 cm霍尔推力器工作流率需求分析的基础上,利用小孔节流原理和氙气黏性随温度变化明显的特性,采用粉末冶金多孔金属塞片作为节流元件,在给定入口压力的情况下,通过调节温度实现推进剂微小流率的控制。对基于该控制原理而设计的流量控制器开展了各项环境试验,即在试验前后利用推进剂流率测试系统对其性能进行了测试,测试结果一致性较好,符合设计要求。该流量控制器可在较宽的温度范围内实现不同流率的实时调节,从而满足推力器不同工作状态的流率需求,具有较强的适应性和调节性。
Based on the demand analysis of the working flow rate of 10 cm Hall thruster, by using the principle of pinhole throttling and the obvious change of xenon viscosities with temperature, the porous metal plugs of powder metallurgy are used as the throttling element. Under given inlet pressure , The control of the micro-flow rate of the propellant is achieved by adjusting the temperature. Based on the control principle of the flow controller designed to carry out a variety of environmental tests, that is, before and after the test using the propellant flow rate test system to test its performance, the test results are consistent, in line with the design requirements. The flow controller can achieve real-time adjustment of different flow rates over a wide temperature range to meet the flow rate requirements of different working states of the thruster, and has strong adaptability and regulation.