[ 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

안진효^a ; 조희근^b^{, *}

Structural and Thermal Analyses of Image Processing Units of Satellites

Jin Hyo An^a ; Hee Keun Cho^b^{, *}

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

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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