| Texto completo | |
| Autor(es): |
Santos, Willer G.
[1]
;
Prado, Antonio F. B. A.
[1]
;
Oliveira, Geraldo M. C.
[1, 2]
;
Santos, Leonardo B. T.
[1]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Natl Inst Space Res, Space Engn Dept, BR-12227010 Sao Jose Dos Campos - Brazil
[2] Fed Ctr Technol Educ Minas Gerais CEFET MG, Contagem - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ASTROPHYSICS AND SPACE SCIENCE; v. 363, n. 1 JAN 2018. |
| Citações Web of Science: | 0 |
| Resumo | |
The strongly perturbed environment of a small body, such as an asteroid, can complicate the prediction of orbits used for close proximity operations. Inaccurate predictions may make the spacecraft collide with the asteroid or escape to the deep space. The main forces acting in the dynamics come from the solar radiation pressure and from the body's weak gravity field. This paper investigates the feasibility of using bi-impulsive maneuvers to avoid the aforementioned non-desired phenomena (collisions and escapes) by connecting orbits around the triple system asteroid 2001SN(263), which is the target of a proposed Brazilian space mission. In terms of a mathematical formulation, a recently presented rotating dipole model is considered with oblate-ness in both primaries. In addition, a ``two-point boundary value problem{''} is solved to find a proper transfer trajectory. The results presented here give support to identifying the best strategy to find orbits for close proximity operations, in terms of long orbital lifetimes and low delta-V consumptions. Numerical results have also demonstrated the significant influence of the spacecraft orbital elements (semi-major axis and eccentricity), angular position of the Sun and spacecraft area- to-mass ratio, in the performance of the bi- impulsive maneuver. (AU) | |
| Processo FAPESP: | 16/24561-0 - A relevância dos pequenos corpos em dinâmica orbital |
| Beneficiário: | Othon Cabo Winter |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 16/18418-0 - Busca por órbitas em torno dos pontos Lagrangianos em um asteroide triplo e transferências orbitais |
| Beneficiário: | Leonardo Barbosa Torres dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/14665-2 - Astrodinâmica Aplicada a Veículos Espaciais |
| Beneficiário: | Antônio Fernando Bertachini de Almeida Prado |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |