火箭推进

为了研究等离子体接触器的伏安特性,设计试验分别测试了单支和双支等离子体接触器工作时的伏安特性,并给出了等离子体接触器钳位电压、偏置电压以及触持电压随偏置电流的变化规律。试验结果表明:供气流率的提升有利于接触器放电效率的改进; 等离子体接触器钳位电压、触持电压与偏置电流之间呈现出不同的规律,前者呈现为正阻特性,后者呈现为负阻特性; 两支等离子体接触器同时工作时相互之间存在影响,额定值为5 A时,两支接触器的发射电流分别为8 A和2 A,因此采用双接触器同时工作时,应尽量采用伏安特性接近的阴极以减小差异性。

In order to study the volt-ampere characteristics of plasma contactor, an experiment was designed and conducted to test the volt-ampere characteristics of single and double plasma contactors.In addition, the variation of the clamp voltage, bias voltage and contact voltage of the plasma contactor with the bias current is given.The test results show that the increase of the air supply rate is beneficial to the improvement of discharge efficiency.There is a different law between the clamp voltage, the keeper voltage and the bias current of the plasma contactor.The former shows positive resistance characteristic, while the later shows negative resistance characteristic.Two plasma contactors affect each other while working simultaneously.When the rated value is 5 A, the emission currents of two contactors are 8 A and 2 A, respectively.Therefore, when using double contactors at the same time, the volt-ampere characteristics should be adopted as close as possible to reduce the difference.

引言
1 试验方法及装置
2 试验结果分析及讨论
3 结论

图1 等离子体接触器测试设备示意图<br/>Fig.1 Electrical test configuration of plasma contactor unit

图1 等离子体接触器测试设备示意图
Fig.1 Electrical test configuration of plasma contactor unit

表1 等离子体接触器试验条件<br/>Tab.1 Test conditions of plasma contactor

表1 等离子体接触器试验条件
Tab.1 Test conditions of plasma contactor

图2 空心阴极结构示意图<br/>Fig.2 Schematic diagram of hollow cathode structure

图2 空心阴极结构示意图
Fig.2 Schematic diagram of hollow cathode structure

图3 钳位电压随氙气流率的变化<br/>Fig.3 Change of clamping voltage with Xeon flow rate

图3 钳位电压随氙气流率的变化
Fig.3 Change of clamping voltage with Xeon flow rate

图4 钳位电压随偏置电流的变化<br/>Fig.4 Change of clamping voltage with bias current

图4 钳位电压随偏置电流的变化
Fig.4 Change of clamping voltage with bias current

图5 等效阻抗随偏置电流的变化<br/>Fig.5 Change of equivalent resistance with bias current

图5 等效阻抗随偏置电流的变化
Fig.5 Change of equivalent resistance with bias current

图6 触持电压随偏置电流的变化<br/>Fig.6 Change of keeper voltage with bias current

图6 触持电压随偏置电流的变化
Fig.6 Change of keeper voltage with bias current

图7 等效触持阻抗随偏置电流的变化<br/>Fig.7 Change of equivalent keeper resistance with bias current

图7 等效触持阻抗随偏置电流的变化
Fig.7 Change of equivalent keeper resistance with bias current

图8 触持电压随供气流率的变化<br/>Fig.8 Change of keeper voltage with gas flow

图8 触持电压随供气流率的变化
Fig.8 Change of keeper voltage with gas flow

图9 发射电流随供气流率的变化<br/>Fig.9 Change of emission current with gas flow

图9 发射电流随供气流率的变化
Fig.9 Change of emission current with gas flow

[1] MIZERA P F.A summary of spacecraft charging results[J].Journal of Spacecraft and Rockets, 1983,20(5):438-443.
[2] ROBINSON P A, COAKLEY P.Spacecraft charging-progress in the study of dielectrics and plasmas[J]. IEEE Transactions on Electrical Insulation, 1992,27(5):944-960.
[3] 田立成,刘明正,杨威,等.空间站等离子体接触器钳位模式实验研究[J].推进技术,2017,38(3):695-699.
[4] 马伟,宣益民,韩玉阁,等.长寿命卫星热控涂层性能退化及其对卫星热特征的影响[J].宇航学报,2010,31(2):568-572.
[5] 刘业楠,赵华,易忠,等.空间站带电效应分析及对策[J].载人航天,2013,19(5):6-12.
[6] 梁晓锋,周东,秦晓刚,等.表面带电对航天员出舱活动的影响及对策分析[J].航天器环境工程,2014,31(2):168-172.
[7] PATTERSON M J,HAMLEY J A,VERHRY T.Plasma contactor technology for space station freedom[C]//The 29th JointPropulsion Conference and Exhibit.USA:Monterey,1993.
[8] CARPENTER C B.On the operational status of the ISS plasma contactor hollow cathodes:AIAA 2004-3425[R].USA:AIAA,2004.
[9] FERGUSON D C.Effects on space station[C]//2nd International Energy Conversion Engineering Conference.Virigina:American Institute of Aeronautics and Astronautics,2004.
[10] 田立成,石红,李娟,等.航天器表面充电仿真计算和电位主动控制技术[J].航天器环境工程,2012,29(2):144-149.
[11] 杨昉,师立勤.航天器浮动电位的初步分析[J].宇航学报,2010,31(10):2422-2426.
[12] FERGUSON D,CRAVEN P,MINOW J,et al.A theory for rapid charging events on the international space station[C]//1st AIAA Atmospheric and Space Environments Conference.Virigina:American Institute of Aeronautics and Astronautics,2009.
[13] 乔彩霞,张岩,康小录,等.80 mN霍尔推力器空心阴极寿命试验[J].火箭推进,2014,40(4):11-15.
[14] 张岩,康小录,乔彩霞.钡钨空心阴极放电等离子体特性实验研究[J].火箭推进,2014,40(5):55-60.
[15] 张天平.兰州空间技术物理研究所电推进新进展[J].火箭推进,2015,41(2):7-12,32.

备注

引言

1 试验方法及装置

2 试验结果分析及讨论

3 结论

期刊信息