Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Development Trends of Liquid Methane Rocket Engine and Implications

액체로켓 메탄엔진 개발동향 및 시사점

  • Lim, Byoungjik (Future Launcher R&D Program Office, Korea Aerospace Research Institute) ;
  • Kim, Cheulwoong (Future Launcher R&D Program Office, Korea Aerospace Research Institute) ;
  • Lee, Keum-Oh (Future Launcher R&D Program Office, Korea Aerospace Research Institute) ;
  • Lee, Keejoo (Future Launcher R&D Program Office, Korea Aerospace Research Institute) ;
  • Park, Jaesung (Future Launcher R&D Program Office, Korea Aerospace Research Institute) ;
  • Ahn, Kyubok (School of Mechanical Engineering, Chungbuk National University) ;
  • Namkoung, Hyuck-Joon (Guided Munitions Team, Hyundai Rotem) ;
  • Yoon, Youngbin (Department of Aerospace Engineering, Seoul National University)
  • Received : 2021.02.15
  • Accepted : 2021.03.19
  • Published : 2021.04.30
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Abstract

Selecting liquid methane as fuel is a prevailing trend for recent rocket engine developments around the world, triggered by its affordability, reusability, storability for deep space exploration, and prospect for in-situ resource utilization. Given years of time required for acquiring a new rocket engine, a national-level R&D program to develop a methane engine is highly desirable at the earliest opportunity in order to catch up with this worldwide trend towards reusing launch vehicles for competitiveness and mission flexibility. In light of the monumental cost associated with development, fabrication, and testing of a booster stage engine, it is strategically a prudent choice to start with a low-thrust engine and build up space application cases.

최근 발사체 개발의 큰 흐름을 살펴보면, 친환경, 저비용, 재사용, 심우주 탐사를 위한 저장성, 외부행성에서의 추진제 확보 가능성 등의 이유로 액체 메탄이 로켓 연료로 각광 받기 시작했다. 재사용 발사체 기술의 보편화, 국제적인 엔진개발 추세에 발맞춰 미래의 경쟁력과 임무 유연성을 확보하려면 엔진 개발 기간 등을 고려해서 가능한 빨리 메탄엔진 개발을 추진해야 하며, 제작 및 시험 인프라, 활용성, 개발 비용 등을 종합적으로 고려하면 부스터 엔진보다 저추력 엔진을 선행 개발하는 것이 더 적절한 것으로 판단된다.

Keywords

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