| Texto completo | |
| Autor(es): |
Silva Neto, J. B.
;
Sanchez, D. M.
;
Prado, A. F. B. A.
;
Parker, JS
;
Seago, JH
;
Strange, NJ
;
Scheeres, DJ
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ASTRODYNAMICS 2018, PTS I-IV; v. 162, p. 14-pg., 2018-01-01. |
| Resumo | |
Asteroids and comets have become the target of space missions. A major goal of future missions is to find solutions that minimize costs. Our study presents the use of solar radiation pressure, by varying the area-to-mass ratio and/or the reflectivity coefficient of the spacecraft, with the goal to assist in the ejection of the spacecraft from an orbit around an asteroid, for a possible return phase to the Earth or to direct the spacecraft to a second target. The asteroid Didymos, which has a small natural moon (Didymoon), is chosen as the focus of the present study, because it is the target of the AIDA mission. The study showed the existence of small but important escape windows from the asteroid using the solar radiation pressure to eject the spacecraft from the system. The results also showed: survival regions between L4 and L5, with small escape regions nearby, a very large natural ejection zone 20 km away from the surface of Didymos, areas of survival near the surface of Didymos caused by resonances and the identification of a chaotic region ranging from approximately 1.2 km to 20 km from the surface of Didymos. (AU) | |
| Processo FAPESP: | 14/22295-5 - Estudo da dinâmica de satélites artificiais em torno de sistemas triplos |
| Beneficiário: | Diogo Merguizo Sanchez |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 11/08171-3 - Dinâmica orbital de pequenos corpos |
| Beneficiário: | Othon Cabo Winter |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 16/14665-2 - Astrodinâmica Aplicada a Veículos Espaciais |
| Beneficiário: | Antônio Fernando Bertachini de Almeida Prado |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 16/07248-6 - Estudo de órbitas para veículos espaciais em torno de asteroides |
| Beneficiário: | José Batista da Silva Neto |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |