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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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An unsteady modeling of the Teflon Ionization for a Pulsed Plasma Thruster Performance

펄스형 플라즈마 추력기 성능해석을 위한 테프론의 이온화 비정상 모델링 연구

  • Received : 2016.05.03
  • Accepted : 2017.07.03
  • Published : 2017.08.01
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Abstract

A teflon ionization modeling has been conducted to predict the performance of a PPT(Pulsed Plasma Thruster). One dimensional unsteady circuit model and Teflon ablation model were implemented. The Saha equation was adapted to predict the ionization of Carbon and Fluorine gas. The lumped circuit model including a resistance and a inductance model of a plasma was adapted to predict the magnitude of a discharge current. Numerical simulation results had good agreements with pervious research. The degree of current change according to PPT operating voltage was examined.

펄스형 플라즈마 추력기의 성능해석을 위해 Teflon의 승화와 이온화 모델링을 수행하였다. PPT 작동 시 발생하는 방전 전휴의 변화를 예측하기 위해 일차원 lumped circuit model을 적용하였으며 Mickeal Keidar가 제시한 테플론-플라즈마 온도에 따른 테플론 승화 모델을 적용하였다. Saha 방정식을 이용하여 테플론 구성 원소인 탄소와 불소분자의 이온화를 예측하였다. 프로그램 검증을 위해 선행실험 결과와 비교하여 유사함을 확인하였으며 PPT 작동 전압에 따른 전류 변화정도를 고찰하였다.

Keywords

References

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