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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Optimal Soft Landing Guidance and Attitude Control for Reusable Launch Vehicles

재사용 발사체를 위한 최적 연착륙 유도 및 자세 제어 연구

  • Jeon, Ho-Young (Department of Aerospace Engineering, Inha University) ;
  • Cho, Jun-Hyon (Department of Aerospace Engineering, Inha University) ;
  • Kim, Jong-Han (Department of Aerospace Engineering, Inha University)
  • Received : 2022.01.17
  • Accepted : 2022.03.07
  • Published : 2022.04.01
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Abstract

We formulated the convex optimization based minimum energy soft landing problem for reusable launch vehicles, and obtained the minimum time trajectory via the bisection search. In order to implement the the optimal guidance command and complete the flight control architectures on the soft landing stage, we designed the classical attitude control loops, and formulated and solved the optimal actuator allocation problem. The obtained soft landing guidance performance was analyzed via nonlinear 6-DOF simulation.

본 논문에서는 재사용 발사체의 종말 연착륙 구간 비행 제어를 위한 컨벡스 최적화 기반 최소 연료 정밀 착륙 문제를 수립하고 이분탐색을 통해 최단 시간 연착륙 비행궤적을 도출하였다. 계산된 유도 명령 추종을 위해 자세 제어 루프와 구동력 분배 문제를 수립하고 해결함으로 재사용 발사체의 착륙 영역 비행제어계 구조를 완성하였다. 완성된 비행제어계의 착륙 유도성능은 6-자유도 시뮬레이션을 통해 구현되고 분석되었다.

Keywords

Acknowledgement

이 성과는 2021년도 과학기술정보통신부의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. NRF-2019M1A3A2076965).

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