期刊
ADVANCES IN SPACE RESEARCH
卷 51, 期 11, 页码 2112-2124出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.asr.2013.01.002
关键词
SpaceChip; Rarefied gas; DSMC; Position control
类别
资金
- James Weir Foundation
- European Research Council [227571]
- EPSRC [EP/J005924/1, EP/K000195/1, EP/K000586/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K000195/1, EP/J005924/1, EP/K000586/1] Funding Source: researchfish
The aerodynamic situation of a satellite-on-a-chip operating in low Earth orbit bears some resemblance to a classical Crookes radiometer. The large area-to-mass ratio characteristic of a SpaceChip means that very small surface-dependent forces produce non-negligible accelerations that can significantly alter its orbit. When the temperature of a SpaceChip changes, the drag force can be changed: if the temperature increases, the drag increases (and vice versa). Analytical expressions available in the literature that describe the change in drag coefficient with orbit altitude and SpaceChip temperature compare well with our direct simulation Monte Carlo results presented here. It is demonstrated that modifying the temperature of a SpaceChip could be used for relative orbit control of individual SpaceChips in a swarm, with a maximum change in position per orbit of 50 m being achievable at 600 km altitude. (C) 2013 COSPAR. Published by Elsevier Ltd. All rights reserved.
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