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- Title
Thermo-Mechanical Design and Validation of Spaceborne High-Speed Digital Receiver Unit for Synthetic Aperture Radar Application.
- Authors
Kang, Soo-Jin; Park, Sung-Woo; Choi, Hye-Yoon; Ryu, Gu-Hyun; Kim, Jong-Pil; Jung, Sung-Hoon; Kim, Se-Young; Lee, Hyon-Ik; Oh, Hyun-Ung
- Abstract
This paper presents the effectiveness of the thermo-mechanical design of a high-speed digital receiver unit (HSDRU) developed for spaceborne synthetic aperture radar applications. The main features of HSDRU's thermo-mechanical design include the thermal management of high-heat dissipation units by adopting heat sinks with the additional function of structural stiffeners and securing the heat rejection path to the upper side of electronics that interfaces the foil radiator for the on-orbit passive thermal control of electronics exposed to deep space environments. The thermal design, which adopts a thermal gap pad, is closely related to the solder joint fatigue life in a launch vibration environment, owing to its initial compressive static load between the heat sink and heat dissipation units that enhances the heat transfer capability. The effectiveness of the design was validated via the qualification level of launch environment tests.
- Subjects
SYNTHETIC apertures; SPACE-based radar; SYNTHETIC aperture radar; HEAT sinks; SOLDER joints; COMPRESSION loads; FATIGUE life; DEAD loads (Mechanics)
- Publication
Aerospace (MDPI Publishing), 2021, Vol 8, Issue 10, p305
- ISSN
2226-4310
- Publication type
Article
- DOI
10.3390/aerospace8100305