Journal
AEROSPACE SCIENCE AND TECHNOLOGY
Volume 49, Issue -, Pages 112-129Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2015.11.036
Keywords
Electrodynamic tether; Dynamic stability; Energy control strategy; Deorbit; Elastic; Thermal and electrical coupling
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada [RGPIN 341917-2013, RGPAS 446204-2013]
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This paper developed a high-fidelity dynamic model of flexible space tether systems by considering the elastic, thermal, and electrical coupling effects on the dynamics and stability of bare electrodynamic tether systems. A simple and effective control strategy based on the libration energy of the flexible tether is derived and applied in the deorbit process. Numerical results show that the newly proposed energy control strategy is effective in controlling the libration and transverse elastic motion of the electrodynamic tether. In addition, the effect of the mass of sub-satellite on the system dynamics and stability is investigated. It is found that the libration and transverse motion of the electrodynamic tether can be stabilized by the proposed control strategy even without the sub-satellite when the electrodynamic force is dominant. This new finding shows the satellite deorbit with the electrodynamic tethers is advantageous in term of mass saving. (C) 2015 Elsevier Masson SAS. All rights reserved.
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