Development of Variable Time-Averaged Thrust System by Controlling Duty Ratio of Ion Beam Extraction in Ion Thrusters

DOI Web Site 6 References
  • TAKESUE Ippei
    Department of Advanced Energy Engineering Science, Kyushu University
  • KAWAHARA Yutaro
    Department of Advanced Energy Engineering Science, Kyushu University
  • IIJIMA Kensuke
    Department of Advanced Energy Engineering Science, Kyushu University
  • USHIO Kouichi
    Department of Advanced Energy Engineering Science, Kyushu University
  • YAMAMOTO Naoji
    Department of Advanced Energy Engineering Science, Kyushu University
  • MORITA Taichi
    Department of Advanced Energy Engineering Science, Kyushu University
  • NAKANO Masakatsu
    Monozukuri Engineering Department, Tokyo Metropolitan College of Industrial Technology
  • OHKAWA Yasushi
    Research and Development Directorate, JAXA
  • FUNAKI Ikkoh
    Institute of Space and Astronautical Science, JAXA

Abstract

<p>For the demonstration of wide variable thrust range ion thruster, ion beam extraction ON/OFF duty ratio controlling system was developed. We measured the ion beam current trace at downstream of the ion thruster with ON/OFF duty ratio control. In addition, we investigated the effect of this system on the ion beam divergence. The ion beam current changed as the applied voltage changed, that is, we demonstrated the system was useful for extending the thrust range. Beam divergence was almost constant, about 20 degree while changing duty ratio from 1% to 100%; this results shows that variable thrust system with controlling the beam extraction ON/OFF duty ratio affects little on the beam divergence.</p>

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