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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Structural Dynamic Characteristics of Modular Deployable Reflectors and Booms for the Large Mesh Antennas

대형 메쉬 안테나 개발을 위한 모듈식 반사판 및 붐 구조의 동적 특성 분석

  • Received : 2022.05.18
  • Accepted : 2022.07.17
  • Published : 2022.10.01
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Abstract

Large aperture antennas with long focal lengths in space have important application for telecommunications, Earth observation and science missions. This paper aims to understand the dynamics of deployment of large mesh antennas and to provide a multibody model for determining the driving forces for the design of reflectors and booms. The modular deployable reflector and boom are designed based on the deployment unit cell. A multibody dynamic model is formulated with Kane's equation and simulated using the pseudo upper triangular decomposition (PUTD) method for solving the constrained problem. Based on the multibody dynamic model, the kinetics of the deployment, the motor driving forces, and the structural dynamic deformation are investigated.

본 논문에서는 대형 메쉬 안테나 개발을 위한 모듈식 전개형 반사판 및 붐 구조의 전개 시 요구되는 구동력 및 전개 특성을 분석하고자 한다. 단위 전개 구조를 이용하여 모듈식 전개형 반사판 링과 붐 구조의 수납/전개된 형상을 분석하였다. Kane's 방정식을 이용하여 전개 구조물의 다물체 동역학 방정식을 유도하고 PUTD(Pseudo Upper Triangular Decomposition) 방법을 적용하여 구속조건 문제를 해결하였다. 다물체 동역학 시뮬레이션을 통해 설계된 모듈식 전개 반사판 링 그리고 붐 구조의 동적 특성을 살펴보고자 한다.

Keywords

Acknowledgement

이 연구는 LIG NEX1 산학협력과제 지원으로 연구되었음

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