5 August 2010 Development of mechanical structure for the compact space IR camera MIRIS
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Abstract
MIRIS is a compact near-infrared camera with a wide field of view of 3.67°×3.67° in the Korea Science and Technology Satellite 3 (STSAT-3). MIRIS will be launched warm and cool the telescope optics below 200K by pointing to the deep space on Sun-synchronous orbit. In order to realize the passive cooling, the mechanical structure was designed to consider thermal analysis results on orbit. Structural analysis was also conducted to ensure safety and stability in launching environments. To achieve structural and thermal requirements, we fabricated the thermal shielding parts such as Glass Fiber Reinforced Plastic (GFRP) pipe supports, a Winston cone baffle, aluminum-shield plates, a sunshade, a radiator and 30 layers of Multi Layer Insulation (MLI). These structures prevent the heat load from the spacecraft and the earth effectively, and maintain the temperature of the telescope optics within operating range. A micro cooler was installed in a cold box including a PICNIC detector and a filter-wheel, and cooled the detector down to a operating temperature range. We tested the passive cooling in the simulated space environment and confirmed that the required temperature of telescope can be achieved. Driving mechanism of the filter-wheel and the cold box structure were also developed for the compact space IR camera. Finally, we present the assembly procedures and the test result for the mechanical parts of MIRIS.
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Bongkon Moon, Bongkon Moon, Woong-Seob Jeong, Woong-Seob Jeong, Sang-Mok Cha, Sang-Mok Cha, Youngsik Park, Youngsik Park, Chang-Hee Ree, Chang-Hee Ree, Dae-Hee Lee, Dae-Hee Lee, Sung-Joon Park, Sung-Joon Park, Uk-Won Nam, Uk-Won Nam, Jang-Hyun Park, Jang-Hyun Park, Nung Hyun Ka, Nung Hyun Ka, Mi Hyun Lee, Mi Hyun Lee, Duk-Hang Lee, Duk-Hang Lee, Jeonghyun Pyo, Jeonghyun Pyo, Seung-Woo Rhee, Seung-Woo Rhee, Jong-Oh Park, Jong-Oh Park, Hyung-Mok Lee, Hyung-Mok Lee, Toshio Matsumoto, Toshio Matsumoto, Sun Choel Yang, Sun Choel Yang, Wonyong Han, Wonyong Han, "Development of mechanical structure for the compact space IR camera MIRIS", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 77311Y (5 August 2010); doi: 10.1117/12.856364; https://doi.org/10.1117/12.856364
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