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Mission analysis using experimental results from an 8-cm ion thruster.

机译:使用8厘米离子推进器的实验结果进行任务分析。

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摘要

Ion thrusters are a type of electric propulsion device in which positively charged particles are electrostatically accelerated to create thrust. Ion thrusters are currently used for station keeping and deep space missions because of their high efficiency and specific impulse. This efficiency is a function of its beam voltage.;The effects of beam voltage on thrust, efficiency, and beam divergence were studied using experimental data from an 8-cm ion thruster. The beam voltage was varied between 600 V and 1400 V. Using these data, a mission analysis was performed for Lower Earth Orbit (LEO) to Mars and LEO to Jupiter.;Upper and lower bounds on beam divergence efficiency were calculated using experimental measurements of the plume expansion. Overall thruster efficiency increased monotonically with beam voltage. These performance data were input into CHEBYTOP to calculate trip time and propellant fraction for both the Mars and Jupiter missions. Trip time decreased with beam voltage while propellant fraction increased. Beam divergence was found to have a negligible effect on mission performance.
机译:离子推进器是一种电推进装置,其中带正电的粒子被静电加速以产生推力。离子推进器由于其高效率和特有的脉冲性,目前用于站位维护和深空任务。该效率是其束电压的函数。使用来自8 cm离子推进器的实验数据研究了束电压对推力,效率和束发散的影响。射束电压在600 V和1400 V之间变化。使用这些数据,对到达火星的低地球轨道(LEO)和到达木星的LEO进行了任务分析;通过实验测量了射束发散效率的上限和下限。羽状膨胀。整体推进器效率随射束电压单调增加。这些性能数据输入到CHEBYTOP中,以计算火星和木星任务的飞行时间和推进剂分数。跳闸时间随着射束电压的增加而减少,而推进剂的分数增加。发现光束发散对任务性能的影响可忽略不计。

著录项

  • 作者

    Turner, Andre A., Jr.;

  • 作者单位

    The University of Alabama in Huntsville.;

  • 授予单位 The University of Alabama in Huntsville.;
  • 学科 Engineering Aerospace.
  • 学位 M.S.E.
  • 年度 2009
  • 页码 81 p.
  • 总页数 81
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空、航天技术的研究与探索;
  • 关键词

  • 入库时间 2022-08-17 11:37:37

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