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Comparison Study of the Low Power Hall Thrusters Performance

소형위성용 저전력 홀 추력기의 성능 비교 연구

  • Received : 2010.08.09
  • Accepted : 2011.01.10
  • Published : 2011.02.01

Abstract

A low power Hall thruster is under development for orbit maintenance of a small Earth observing satellite. Both cylindrical and annular type thrusters were manufactured and tested to characterize the performance of cylindrical Hall thrusters. Results were described through comparative analyses. Cylindrical thrusters were manufactured in two different channel diameter dimensions, 28 mm and 50 mm. Thrust, ion velocity and ion current were measured in various operating conditions. The results show that cylindrical thrusters are more efficient in mass utilization and voltage utilization, but less efficient in current utilization than annular one.

소형 지구관측위성의 궤도 보정을 위한 저전력 홀 추력기를 개발하였다. 원통형 홀 추력기의 성능 특성을 파악하기 위해 원통형 홀 추력기과 고리형 홀 추력기를 제작하여 시험을 수행했고 그 결과를 비교 분석하였다. 원통형 추력기는 채널 내경에 따른 성능 변화를 보기 위해 28 mm, 50 mm 두 종류로 제작되었다. 다양한 방전 조건에서 추력과 이온 에너지, 이온 전류를 측정하였다. 결과는 원통형 추력기가 고리형 추력기에 비해 연료 효율과 전압 효율에서 더 뛰어나고, 전류 효율에서는 떨어짐을 보였다.

Keywords

References

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