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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Analysis of Spacecraft Attitude Dynamics Interacting with Liquid Fuel Sloshing

액체 연료의 슬라슁과 상호작용하는 우주 탐사선의 자세 운동 분석

  • Jin, Jaehyun (Dept. Aerospace Eng./Center for Aerospace Eng. Research, Sunchon National University) ;
  • Kim, Su-Kyum (Satellite Mechanical Team, Korea Aerospace Research Institute)
  • Received : 2017.07.24
  • Accepted : 2017.10.27
  • Published : 2017.12.01
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Abstract

Space exploration spacecraft carry large amounts of liquid fuel, often more than half. In such cases, the liquid fuel sloshing must be considered in the design of the spacecraft since the sloshing can affects the stability of the spacecraft. In this paper, we present the results of analyzing the sloshing of fuel and the dynamic behavior of the spacecraft. For the purpose, a model in which the maneuvering of the spacecraft causes the sloshing and a model in which the reaction force and moment due to the sloshing are transmitted to the spacecraft are developed. The dynamical behavior of the spacecraft are analyzed using a simulation program coded by Modelica.

우주 탐사선은 다량의 액체 연료를 탑재하는데, 절반 이상을 넘는 경우가 많다. 이러한 경우, 액체 연료의 슬라슁 현상이 탐사선의 자세 안정성에 영향을 주기 때문에 탐사선 설계에 슬라슁 현상을 고려해야 한다. 본 논문에서는, 액체 연료의 슬라슁 현상과 이와 상호작용하는 탐사선의 동적 거동을 분석한 결과를 제시한다. 이를 위하여 탐사선의 기동이 액체 연료의 슬라슁 현상을 일으키는 모델과 슬라슁에 의한 반력 힘과 모멘트가 탐사선에게 전달되는 모델을 개발하였다. 모델리카 언어로 작성한 시뮬레이션 프로그램을 이용하여 탐사선의 거동을 분석하였다.

Keywords

References

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