TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN
Online ISSN : 1884-0485
Development of Variable Time-Averaged Thrust System by Controlling Duty Ratio of Ion Beam Extraction in Ion Thrusters
Ippei TAKESUEYutaro KAWAHARAKensuke IIJIMAKouichi USHIONaoji YAMAMOTOTaichi MORITAMasakatsu NAKANOYasushi OHKAWAIkkoh FUNAKI
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2018 Volume 16 Issue 5 Pages 388-391

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Abstract

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.

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© 2018 The Japan Society for Aeronautical and Space Sciences
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