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The establishment of requirement and kinematic analysis of mechanism for deployable optical structure

전개형 광학구조체용 메커니즘 요구조건 수립 및 후보 메커니즘의 기구학적 해석

  • Jeong, Seongmoon (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Choi, Junwoo (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lee, Dongkyu (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Hwang, Kukha (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Sangwoo (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Jangho (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Byungkyu (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • Received : 2014.04.30
  • Accepted : 2014.07.05
  • Published : 2014.08.01

Abstract

In these days, there have been numerous researches on nano and micro satellites under the slogan of "Faster, Smaller, Better, Cheaper". Since optical structure occupies large portion of satellite volume, research on deployable optical structure gains great attention to reduce total volume of the satellite. In this paper, we establish the requirement of deployable optical structure based on specification of conventional optical structure and propose two candidate mechanisms which can satisfy the degree of deployment precision. Then, in order to evaluate the degree of deployment precision, we carry out kinematic analysis on de-space among tilt, de-space and de-center which influences optical characteristic of a satellite.

최근 인공위성 연구는 "Faster, Smaller, Better, Cheaper"라는 슬로건 하에 나노급, 마이크로급 인공위성 개발, 복수위성 발사 등에 대한 연구가 활발히 진행되고 있다. 광학구조체는 인공위성에서 대부분의 비율을 차지하며, 이를 축소하기 위한 방안으로 광학구조체에 전개 메커니즘을 접목시킨 전개형 광학구조체에 대한 연구가 각광받고 있다. 본 논문에서는 기존 고정형 광학구조체의 요구조건을 바탕으로 전개형 광학구조체 전개 시 정렬 정밀도를 제안하고, 이 정밀도를 만족시킬 수 있는 전개 메커니즘 후보를 제안하였다. 또한 기구학적 해석을 수행하여, 위성의 광학성능에 영향을 미치는 미러 사이의 tilt, de-space, de-center중, 기구의 입력 오차에 의하여 발생될 수 있는 기구장치의 de-space 정밀도를 평가하였다.

Keywords

References

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