The Korea Astronomy and Space Science Institute is working on a project, the Republic of Korea Imaging Test System shortly called ROKITS, which is an optical system that aims to study the formation and occurrence of the aurora. The main objective is to gain insights into the changes occurring in the atmosphere, particularly the upper atmosphere, due to external energy sources from outside the Earth. Additionally, the system will investigate the feasibility of detecting atmospheric waves, specifically atmospheric gravity waves, which spread from the lower atmosphere. To achieve these scientific goals, 90 degrees of a wide field of view and a very narrow bandwidth of filters in a specific wavelength are required, and this paper will present information on the optical design and related analysis.
KEYWORDS: Thermal analysis, Design and modelling, Thermal modeling, Fused deposition modeling, Solar energy, Optical telescopes, Optical surfaces, Space operations, Satellites, Control systems
Space telescopes are exposed to extreme hot and cold temperature variations in the space environment depending on their orbit conditions. These temperature variations cause a significant effect on the opto-mechanical structures and lead to the final optical performance degradation. The development of space optical telescopes must achieve a thermally stable and reliable system through thermal analysis for on-orbit temperature prediction and thermal control design maintaining all components within their operating/survival temperature limits during entire mission phases. In this paper, we report the analysis results of passive and active thermal design for the ROKITS mission based on on-orbit thermal analysis taking into account the worst hot and cold conditions in the space environment using thermal analysis program - Thermal Desktop®, SINDA/FLUINT®.
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