한국생산제조학회 학술지 영문 홈페이지
[ Papers ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 29, No. 1, pp.42-50
ISSN: 2508-5107 (Online)
Print publication date 15 Feb 2020
Received 31 Dec 2019 Revised 04 Feb 2020 Accepted 06 Feb 2020
DOI: https://doi.org/10.7735/ksmte.2020.29.1.42

위성용 영상처리장치 구조 및 열해석

안진효a ; 조희근b, *
Structural and Thermal Analyses of Image Processing Units of Satellites
Jin Hyo Ana ; Hee Keun Chob, *
aDepartment of Precision Mechanical Engineering, Andong National University
bDepartment of Mechanical Engineering Education, Andong National University

Correspondence to: *Tel.: +82-54-820-5677 E-mail address: hkcho@anu.ac.kr (Hee Keun Cho).

Abstract

In this study, we performed structural and thermal analyses on the image processing units of satellites. The image processing unit is a major satellite payload weighing 15 kgf with an aluminum frame structure. Owing to modal analysis, the first mode of the structure was 393 Hz, and it met the payload design requirement of exceeding 100 Hz. Quasi-static analysis was conducted by applying a gravitational acceleration of 28 g. The maximum stress of the structure was 14.9 MPa, and all the parts of structure had a safety margin of 12.9-18.9 compared to the ultimate strength of Al6061 and FR4. Additionally, the highest temperature of the IC Chip was 85.7℃ and all the components of the payload had thermal margins based on temperature derating.

Keywords:

Structural analysis, Thermal analysis, Image processing unit, Satellite

References

  • Kim, I. J., Oh, D. S., Park, S. S., Nam, M. R., Ryoo, C. K., 2017, Verification Plan for Instrument Data Handling Unit (IDHU) for Small Satellites, KSAS Fall Conference, 360-361..
  • Cho, H. K., Seo, J. K., Myung, N. H., 2009, Spectrum and Equivalent Transient Vibration Analysis of Small Composite Satellite Structure, Journal of The Korean Society for Aeronautical and Space Sciences, 37:6 586-594.. [https://doi.org/10.5139/JKSAS.2009.37.6.586]
  • Cho, H. K., 2015, Dynamic Response Assessment of Space Use Telescope, Journal of the Korean Society of Manufacturing Technology Engineers, 24:1 87-93, http://dx.doi.org/10.7735/ ksmte.2015.24.1.087.. [https://doi.org/10.7735/ksmte.2015.24.1.087]
  • Jang, J. I., Park, S. H., 2019, Structural Design and Analysis of Nanosatellite for Microgravity Scientific Missions, Journal of the Korean Society of Manufacturing Technology Engineers, 28:2 93-99.. [https://doi.org/10.7735/ksmte.2019.28.2.93]
  • Park, D. I., Kikuko, M., Hosei, N., 2017, Thermal Design and Validation of Radiation Detector for the ChubuSat-2 Micro-satellite with high-thermal-conductive Graphite Sheets, Acta Astronautica, 136 387-394, http://dx.doi.org/10.1016/j. actaastro.2017.03.030.. [https://doi.org/10.1016/j.actaastro.2017.03.030]
  • Lee, J. Y., Huh, H. I., Kim, S. H., Chang, S. Y., Lee, D. G., Lee, S. H., Choi, H. J., 2011, Preliminary Thermal Analysis for LEO Satellite Optical Payload’s Thermal Vacuum Test, Journal of The Korean Society for Aeronautical and Space Sciences, 39:5 466-473, http://dx.doi.org/10.5139/JKSAS.2011.39.5.466.. [https://doi.org/10.5139/JKSAS.2011.39.5.466]
  • Jeon, W. J., Kim, S. H., Hyeon, B. S., Jeon, H. Y., Han, S. C., Han, K. A., Yu, J. H., 2016, Preliminary Thermal Analysis of Compact LEO Satellite, KSAS Fall Conference, 1010-1011..
  • An, J. Y., Cho, H. K., 2020, On-orbit Thermal Analysis of Instrument for the Study of Space Storm, Journal of the Korean Society of Manufacturing Technology Engineers, 29:1 35-41..
  • Oh, D. S., Nam, M. R., 2018, Design of Image Data Handling Unit for Compact Advanced Satellite-500 (CAS500), KSAS Fall Conference, 423-424..
  • Olson, M. D., 1972, A Consistent Finite Element Method for Random Response Problems, Computers & Structures, 2:1-2 163-180.. [https://doi.org/10.1016/0045-7949(72)90026-0]
  • Elishakorr, I., Zhu, L., 1993, Random Vibration of Structures by the Finite Element Method, Computer Methods in Applied Mechanics and Engineering, 105:3 359-373.. [https://doi.org/10.1016/0045-7825(93)90063-4]
  • Chang, T. P., Chang, H. C., Liu, M. F., 2006, A Finite Element Analysis on Random Vibration of Nonlinear Shell Structures, Journal of Sound and Vibration, 291:1-2 240-257.. [https://doi.org/10.1016/j.jsv.2005.06.004]
Jin Hyo An

Ph.D. candidate in the Department of Precision Mechanical Engineering, Andong National University.His research interest is FEM.

E-mail: malong8484@naver.com

Hee Keun Cho

Associate professor in the Department of Mechanical Engineering Education, Andong National University.His research interest are FEM and composite materials.

E-mail: hkcho@anu.ac.kr