Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지

Electric Propulsion

전기 추진

  • 문희장 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2008.06.30
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Abstract

The EP(electric propulsion) is unique in that several energy sources can be utilized to produce the electric energy and that high exhaust velocity can be achieved compared to the conventional chemical propulsion. Though a lot of variety of non chemical propulsion are under study, the fact that the EP's specific impulse ranges widely from 200s to 5000s led most research to concentrate on the electric propulsion research. This paper, therefore, is aimed to introduce the up-todate existing EP family such as electrothermal, electrostatic and electromagnetic thrusters where its operating concepts, characteristics and possible variants are presented for future applications.

다양한 에너지원들을 전력발생용으로 활용할 수 있다는 점과 화학추진기로는 얻을 수 없는 높은 분사추진속도를 구현할 수 있다는 점은 전기추진기만의 장점으로 대두된다. 수많은 비화학추진기들이 연구개발중에 있으나 현재로서는 200s에서 5000s까지의 넓은 비추력 범위를 갖는 전기추진기의 연구개발이 가장 많은 진전을 이루고 있다. 따라서 본 논문의 주요내용은 전기추진기에 할애되어 있으며 전력으로 열을 발생시켜 추력을 얻는 전열추력기(electrothermal thruster), 정전기장을 응용한 정전기추력기(electrostatic thruster)와 플라스마 상태의 고온가스를 자기장으로 가속시키는 전자기추력기(electromagnetic thruster)에 대한 작동원리, 특성 및 개발현황들을 소개한다.

Keywords

References

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