Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A Study on Relationship Between Discharge Voltage and Plasma Characteristics of Hall Thruster Using a Hybrid Model

하이브리드 모델을 이용한 홀 추력기의 방전 전압과 플라즈마 특성 관계 연구

  • Jung, Gwanyong (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Sung, Hong-Gye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • Received : 2020.05.04
  • Accepted : 2020.07.27
  • Published : 2020.08.01
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Abstract

The effect of discharge voltage on electron mean energy, electric potential, ionization rate, neutral and ion density of Hall thruster was analyzed using a two-dimensional axisymmetric hybrid model. The results of the code developed for this study such as discharge current, thrust, and plasma distribution according to discharge voltage of SPT-100ML Hall thruster were compared by experiments and calculations of other researchers for validation. The results show that the electron mean energy, the ionization rate, and the ion density are increased while the neutral density is decreased as the discharge voltage is increased. The thrust and the discharge current are proportional to the discharge voltage.

이차원 축대칭 하이브리드 모델을 이용하여 홀 추력기의 플라즈마 방전 전압이 전자 평균 에너지, 전위, 이온화율 그리고 중성종 및 이온의 밀도에 미치는 영향을 분석하였다. 본 연구에서 개발된 코드의 검증을 위하여 홀 추력기 SPT-100ML의 방전 전압의 변화에 따른 방전 전류와 추력 및 플라즈마 분포 결과를, 타 연구자들의 실험과 계산 결과와 비교하였다. 결과는 방전 전압이 증가할수록 전자 평균 에너지, 이온화율, 이온의 밀도가 증가하는 반면에 중성종의 밀도가 감소함을 나타내었다. 방전 전압과 추력, 방전 전류는 서로 비례하는 관계를 나타내었다.

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References

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