Fabrication and performance analysis of MEMS-based Variable Emissivity Radiator for Space Applications

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Lee, Changwook^1 ; Oh, Hyung-Ung^1 ; Kim, Taegyu^1

Department of Aerospace Engineering, College of Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju

501-759, Korea, Republic of^1

关键词: Electrical control;    High reliability;    Low-power consumption;    Performance analysis;    Satellite thermal control;    Small-satellite;    Thermal control;    Thermal control devices;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012082/pdf
DOI  :  10.1088/1742-6596/557/1/012082

来源: IOP

【 摘 要 】

All Louver was typically representative as the thermal control device. The louver was not suitable to be applied to small satellite, because it has the disadvantage of increase in weight and volume. So MEMS-based variable radiator was developed to support the disadvantage of the louver MEMS-based variable emissivity radiator was designed for satellite thermal control. Because of its immediate response and low power consumption. Also MEMS- based variable emissivity radiator has been made smaller by using MEMS process, it could be solved the problem of the increase in weight and volume, and it has a high reliability and immediate response by using electrical control. In this study, operation validation of the MEMS radiator had been carried out, resulting that emissivity could be controlled. Numerical model was also designed to predict the thermal control performance of MEMS-based variable emissivity radiator.