Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Thrust Control of Hybrid Propulsion System for Lunar Exploration

달 탐사를 위한 하이브리드 추진 시스템 추력제어

  • Moon, Keunhwan (Graduate School of Department of Aerospace & Mechanical Engineering, Korea Aerospace University) ;
  • Han, Seongjoo (Graduate School of Department of Aerospace & Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Hakchul (Graduate School of Department of Aerospace & Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Kyehwan (School of Aerospace & Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Jinkon (School of Aerospace & Mechanical Engineering, Korea Aerospace University) ;
  • Moon, Heejang (School of Aerospace & Mechanical Engineering, Korea Aerospace University)
  • Received : 2014.06.03
  • Accepted : 2014.11.15
  • Published : 2014.12.01
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Abstract

A feasibility study of thrust control of hybrid propulsion system for lunar exploration is presented. The thrust control experiments were performed by controlling the oxidizer mass flow rate where the thrust modulation is carried by using a ball valve and a stepping motor. The gaseous oxygen (GOX) and the HDPE (High Density PolyEthylene) were used for the oxidizer and solid fuel, respectively. It was found that the thrust levels were stable without much fluctuation during the modulation period, and that the thrust was exactly controlled with target thrust modulation ratio of 53% and 32%.

본 연구는 달 탐사 적용을 위한 하이브리드 추진 시스템의 기초 연구로서 산화제 유량 제어를 통한 추력제어 연구를 수행하였다. 산화제 유량 제어를 위해 볼밸브(ball valve)와 스텝 모터(stepping motor)를 이용하여 유량 제어 시스템을 구축하였으며, 산화제 및 연료는 각각 기체 산소(gas oxygen)와 고밀도 폴리에틸렌(High Density PolyEthylene)을 사용하였다. 실험 결과 산화제 유량 제어를 통해 목표 추력 제어 비율(53%, 32%)로 추력제어가 이루어 졌으며, 각각의 구간 내에서 추력이 일정하게 유지 되는 것을 확인 하였다.

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References

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