Low-thrust de-orbiting from Low Earth Orbit through natural perturbations
| Autor: | S. Huang, C. Colombo, E.M. Alessi, Y. Wang, Z. Hou |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Acta astronautica 195 (2022): 145–162. doi:10.1016/j.actaastro.2022.02.017 info:cnr-pdr/source/autori:S. Huanga; C. Colombo; E.M. Alessi; Y. Wanga; Z.Hou/titolo:Low-thrust de-orbiting from Low Earth Orbit through natural perturbations/doi:10.1016%2Fj.actaastro.2022.02.017/rivista:Acta astronautica/anno:2022/pagina_da:145/pagina_a:162/intervallo_pagine:145–162/volume:195 |
| Popis: | This paper investigates two strategies that exploit low-thrust propulsion and natural effects for the complete de-orbiting of spacecraft from a Low Earth Orbit (LEO). The first strategy aims to actively lower the perigee altitude by low-thrust propulsion to achieve passive drag-induced re-entry. The second strategy aims to actively move the spacecraft by low-thrust propulsion to reach a specific condition that can provoke passive orbital decay by means of the coupled effect of natural perturbations. For each strategy, a sub-time-optimal closed-loop steering law, which is proved to be stable, is designed with the Lyapunov method. Then a set of maps that show the costs of de-orbiting from LEO (i.e., the Dv-budget and de-orbiting time) are plotted as a function of the initial conditions for the two strategies. In this way, the feasible initial conditions to apply the two strategies are identified by comparing the Dv-budget. Before plotting the maps, the averaged low-thrust motion is derived, to reduce the computational load for the orbital propagation of low-thrust motion. |
| Databáze: | OpenAIRE |
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