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| Simulation Analysis of Falling Ball Detection in Near Space |
| Received:December 17, 2019 Revised:July 20, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.08.001 |
| KeyWord:near space falling ball simulation acting force |
| Author | Institution |
| LIU Wei |
National Space Science Center, Chinese Academy of Sciences, Beijing , China;University of Chinese Academy of Sciences, Beijing , China;Key Laboratory of Science and Technology on Environmental Space Situation Awareness, CAS, Beijing |
| LIU Si-qing |
National Space Science Center, Chinese Academy of Sciences, Beijing , China;University of Chinese Academy of Sciences, Beijing , China;Key Laboratory of Science and Technology on Environmental Space Situation Awareness, CAS, Beijing |
| GONG Jian-cun |
Innovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai , China;University of Chinese Academy of Sciences, Beijing , China;Key Laboratory of Science and Technology on Environmental Space Situation Awareness, CAS, Beijing |
| WANG Rong-lan |
National Space Science Center, Chinese Academy of Sciences, Beijing , China;Key Laboratory of Science and Technology on Environmental Space Situation Awareness, CAS, Beijing |
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| Abstract: |
| The work aims to analyze the atmospheric density of near space and the load demand and detection performance of wind field based on hard falling ball. The force of free falling detection section was subject to simulating calculation and then a motion equation was established. Taking the assumed release condition as initial state, the detection process was simulated, and the acting force levels and ranges were given. The variation of the area-to-mass ratio (AM) could not change the range of aerodynamic force. Increased AM could improve detection height if at the same accelerometer sensitivity. The solar pressure could be neglected in the detection below 150 km. The meter level changes in horizontal wind field could be detected in case of accelerometer sensitivity 1×10-5 m/s2. In conclusion, the variation of the area-to-mass ratio (AM) cannot change the range of aerodynamic force. Increased AM can improve detection height if at the same accelerometer sensitivity. |
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