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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Structural Design and Verification of MEMS Solid Thruster for CubeSat Application

큐브위성 탑재를 위한 MEMS 고체 추력기의 구조설계 및 검증

  • Received : 2014.09.18
  • Accepted : 2015.04.09
  • Published : 2015.05.01
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Abstract

MEMS solid thruster module is composed of solid thruster and its control board. It was developed for the purpose of an academic research. Therefore, thermo-mechanical design and verification for space usage were not considered in the design phase. To mount it on a cube satellite without any design modification, technical efforts at the system level structure design is required. In this study, we proposed a structural design concept to mount the MEMS thruster module by using brackets for guaranteeing structure safety under launch loads and easier mating and de-mating of MEMS thruster module during test phase. The effectiveness of the design has been verified through structural analysis and vibration test. In addition, electrical connection method using spring pins between MEMS thruster and control board is effective for guaranteeing the structural safety under launch vibration loads.

MEMS 고체 추력기 모듈은 MEMS 고체 추력기와 MEMS 추력기 제어보드로 구성된다. MEMS 고체 추력기는 학문적 연구개발 목적으로 개발되었기 때문에 발사환경을 고려한 설계 및 시험이 이루어지지 않아 이를 큐브위성에 탑재 및 궤도검증을 위해서는 설계 시 추력기 모듈로의 발사 하중이 최소화 되도록 하는 위성체 시스템 레벨에서의 설계노력이 요구된다. 본 논문에서는 MEMS 고체 추력기의 조립 및 시험과정에서의 탈장착 용이성 및 발사환경에서의 구조건전성 확보를 위해 브래킷을 이용한 구조설계를 제안하였으며, 준정적해석과 랜덤해석 및 진동시험을 통해 설계의 유효성을 검증하였다. 또한, 본 논문에서 제안한 스프링 핀을 이용한 MEMS 추력기와의 전기적 체결방식은 발사 진동에서의 구조건전성 확보에 유효함을 입증하였다.

Keywords

References

  1. Hwang, K. L., Min, M. I., Moon, B. Y., and Chang, Y. K., "Mechanical System Design and Development of the HAUSAT-1 Picosatellite" J. of The Korean Society for Aeronautical and Space Sciences, Vol. 32, No. 9, 2004, pp.103-113. https://doi.org/10.5139/JKSAS.2004.32.9.103
  2. Seo, H. S., Lee, J. H., Kim, S. H., Kim, K. W., Kim, C. H., Lim, J. H., Kim, S. W., Kim, W. H., Hwang, D. S., Lee, J. W. and Han, E. W. "Analysis On Nano or Pico-Satellite System Design Technologies" J. of the Korean Society for Aeronautical & Space Sciences Fall Conference, May. 2012, pp.2033-1036.
  3. Konoue, K., Matsunaga, S., "A Development Summary of CUTE-I: Titech CubeSat 2001" Proc. the 45th Space Sciences and Technology Conference, Hamamatsu, Japan, October 2001, pp.801-806.
  4. Kim, S. H., Kim, J. Y., Kong, T. Y., Park, J. H., and Jeong, S. I., "Design and Manufacturing Process of Nanosatellite SNUSAT-1 Prototype" J. of the Korean Society for Aeronautical & Space Sciences Fall Conference, May. 2012, pp1093-1096
  5. Kwon, S. C., Jung, H. M., Ha, H. W., Han, S. H., Lee, M. J., Jeon, S. H., Park, T. Y., Kang, S. J., Chae, B. G., Jang, S. E., Oh, H. U., Han, S. H., Choi, G. H., "Preliminary System Design of STEP Cube Lab. for Verification of Fundamental Space Technology" J. of the Korean Society for Aeronautical and Space Sciences, Vol. 42, No. 5, 2014, pp.430-436. https://doi.org/10.5139/JKSAS.2014.42.5.430
  6. Lee, J. K., "Internal ballistic design and fabrication procedure of MEMS solid propellant rocket", KAIST, 2009, Doctorate Thesis
  7. Jeong, S. Y., Oh, H. U., Lee, K. J., Kim, B. S., "Mechanical Stability Analysis of PCB and Component for Launch and On-orbit Environment based on Fatigue Failure Theory and FEM" J. of The Korean Society for Aeronautical and Space Sciences, Vol. 39, No. 10, 2011, pp.951-958.

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