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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Performance Verification of Hinge Driving Segmented Nut Type Holding and Release Mechanism for Cube Satellite Applications

큐브위성용 힌지 구동형 분리너트식 구속분리장치의 실험적 성능검증

  • Oh, Hyun-Ung (Space Technology Synthesis Laboratory, Department of Aerospace Engineering, Chosun University) ;
  • Lee, Myeong-Jae (Space Technology Synthesis Laboratory, Department of Aerospace Engineering, Chosun University)
  • Received : 2014.01.29
  • Accepted : 2014.04.25
  • Published : 2014.06.01
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Abstract

Pyrotechnic devices are widely used for space appendages. However, a cube satellite requirements do not permit the use of explosive pyrotechnic device. A nichrome burn wire release has typically been used for holding and release of deployable appendages of the cube satellite due to its simplicity and low cost. However, relatively low mechanical constraint force and system complexity for application of multi-deployable systems are disadvantages of the conventional mechanism. To overcome these drawbacks, we developed a hinge driving segmented nut type holding and release mechanism based on the nichrome burn wire release. The functional performance of the mechanism has been verified through release function test, static load test and shock level measurement test.

전개형 우주 구조물의 구속 및 분리를 위해 일반적으로 적용되는 폭발식 분리장치의 경우, 극초소형 위성으로 분류되는 큐브위성에는 적용불가가 설계요구조건으로 규정되어있다. 큐브위성의 제한된 장착 공간과 이로 인한 저충격 요구조건, 저가의 개발비 등의 요구조건으로부터 일반적으로 적용이 용이한 나일론선 열선절단방식이 적용되고 있다. 하지만 나일론선 적용에 따른 낮은 체결력과 복수 구조물의 구속/분리를 위해 복수의 체결부와 열선을 필요로 하는 등 시스템 복잡화 및 신뢰도 저하의 문제점이 존재한다. 본 연구에서는 상기의 문제점 해결을 위해 힌지 구동형 분리너트를 적용한 구속분리장치를 제안하였으며, 인증시험 온도범위에서의 분리장치 동작 기능시험, 정하중 시험, 충격레벨 측정시험을 통해 설계의 유효성을 입증하였다.

Keywords

References

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