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10 cm考夫曼型离子推力器放电室关键参数优化

胡竟 耿海 杨福全 郭德洲 王东升 李建鹏

胡竟,耿海,杨福全,等. 10 cm考夫曼型离子推力器放电室关键参数优化[J]. 北京航空航天大学学报,2023,49(8):1974-1981 doi: 10.13700/j.bh.1001-5965.2021.0631
引用本文: 胡竟,耿海,杨福全,等. 10 cm考夫曼型离子推力器放电室关键参数优化[J]. 北京航空航天大学学报,2023,49(8):1974-1981 doi: 10.13700/j.bh.1001-5965.2021.0631
HU J,GENG H,YANG F Q,et al. Optimization of discharge chamber key parameters for 10 cm Kaufman xenon ion thruster[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(8):1974-1981 (in Chinese) doi: 10.13700/j.bh.1001-5965.2021.0631
Citation: HU J,GENG H,YANG F Q,et al. Optimization of discharge chamber key parameters for 10 cm Kaufman xenon ion thruster[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(8):1974-1981 (in Chinese) doi: 10.13700/j.bh.1001-5965.2021.0631

10 cm考夫曼型离子推力器放电室关键参数优化

doi: 10.13700/j.bh.1001-5965.2021.0631
基金项目: 民用航天预先研究项目(D010509)
详细信息
    通讯作者:

    E-mail:marine115@126.com

  • 中图分类号: V439+.4

Optimization of discharge chamber key parameters for 10 cm Kaufman xenon ion thruster

Funds: Civil Space Advance Research Project (D010509)
More Information
  • 摘要:

    放电室构型设计是离子推力器结构设计的基础与核心,直接影响到放电室工作能效及整机工作寿命。针对新型航天器在轨飞行任务对大推力、长寿命连续变推力离子推力器的应用需求,探究了影响10 cm离子推力器整机效能的放电室关键参数因子,揭示了发散场放电室的磁场发散度、电子通道面积及阴极位置等敏感参数对放电室性能的影响作用关系。开展了10 cm离子推力器放电室参数构型的优化与验证。结果表明:在不改变整机结构的情况下,通过优化放电室关键参数,10 cm离子推力器最大输出推力由20 mN提升至25 mN,提升近25%,推力调节范围由1~20 mN扩展至1~25 mN,全范围内推力分辨率均优于50 μN,且推力器在20 mN最佳工作点的阳极电压由43.5 V降至38.4 V,放电损耗由345 W/A降至308 W/A,预估整机寿命将由15 000 h提升至17 500 h。研究为推动10 cm离子推力器的在轨扩展应用提供了一定的技术支撑。

     

  • 图 1  10 cm离子推力器工作原理

    Figure 1.  Working process of 10 cm ion thruster

    图 2  发散场推力器电子通道示意图

    Figure 2.  Schematic of electronic channel in divergent magnetic field thruster

    图 3  阴极位置调节示意图

    Figure 3.  Schematic of orifice plate height setting

    图 4  10 cm离子推力器工程样机实物

    Figure 4.  Prototype of 10 cm ion thruster engineering

    图 5  不同磁场发散度下放电损耗与放电室推进剂利用率之间的关系

    Figure 5.  Discharge loss versus mass utilization efficiency under different magnetic field divergent

    图 6  不同电子通道面积下阳极电压和放电损耗与励磁电流之间的关系

    Figure 6.  Anode potential and discharge loss versus magnet current under different electronic channel areas

    图 7  不同阴极位置下励磁电流和阴极流率占比对放电损耗的影响

    Figure 7.  Magnet current and cathode flowrate versus discharge loss under different orifice plate heights

    图 8  25 mN工作点下连续工作3 h的推力变化

    Figure 8.  Thrust changes at 25 mN operating point for 3 h continues operation

    图 9  1~25 mN范围内的推力调节变化规律

    Figure 9.  Thrust regulation and change rule over range 1~25 mN

    图 10  优化前后加速栅工作200 h时的状态对比

    Figure 10.  Comparison of state of accelerator grid having worked for 200 h before and after optimization

    表  1  放电室关键参数优化前后状态对比

    Table  1.   Comparison of key parameters of discharge chamber before and after optimization

    测试结果Kd/(°)S/mm2h/mm
    优化前6514350
    优化后7010893
    下载: 导出CSV

    表  2  推力器性能测试对比

    Table  2.   Comparison of thrust test results

    优化改进阳极电压
    /V
    阳极电压振荡
    /V
    阴极电压
    /V
    阴极电压振荡
    /V
    推力
    /mN
    放电损耗
    / (W·A−1)
    推进剂利用率
    /%
    功率
    /W
    优化前43.52813.2620.1034555.7604
    优化后38.4109.8520.1130859.6584
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-10-25
  • 录用日期:  2021-11-27
  • 网络出版日期:  2022-01-12
  • 整期出版日期:  2023-08-31

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