Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Non-explosive Separation Device Harnessing Spring Clamp and Shape Memory Alloy Wire

스프링 클램프와 형상기억합금 와이어를 이용한 비폭발식 분리장치

  • 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) ;
  • Lee, Minhyung (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Byungkyu (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 최준우 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이동규 (한국항공대학교 항공우주 및 기계공학부) ;
  • 황국하 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이민형 (한국항공대학교 항공우주 및 기계공학부) ;
  • 김병규 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2015.06.30
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Abstract

In this paper, we report a non-explosive separation device for a small satellite which utilize a shape memory alloy actuator and spring clamp. In order to increase the preload, the proposed device employs spring clamp that can generate high toque when the shape memory alloy actuator makes the cylinder key unlatch a holding ball effectively. Owing to simple design of separation device configuration, we could obtain good repeatability(up to 30 times activation). Conclusively, we could develop a non-explosive separation device which can reliably activate within 1.2 sec under high preload(up to 300kgf).

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References

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  3. W. Tak, M. Lee, and B. Kim, "Ultimate load and release time controllable non-explosive separation device using a shape memory alloy actuator," Journal of mechanical science and technology, vol. 25, no. 5, pp. 1141-1147, May. 2011. https://doi.org/10.1007/s12206-011-0304-4
  4. M. Lee, J. Jo, W. Tak, and B. Kim, "Shape memory alloy (SMA) based non-explosive separation actuator (NEA) with a redundant function," International Journal of Precision Engineering and Manufacturing, vol. 12, no. 3, pp. 569-572, Jun. 2011 https://doi.org/10.1007/s12541-011-0072-1