| Texto completo | |
| Autor(es): |
Ferreira, Alessandra F. S.
[1, 2]
;
Prado, Antonio F. B. A.
[1]
;
Winter, Othon C.
[2]
;
Santos, Denilson P. S.
[3]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] INPE, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[2] Sao Paulo State Univ UNESP, Grp Dinam Orbital & Planetol, BR-12516410 Guaratingueta, SP - Brazil
[3] Sao Paulo State Univ UNESP, BR-13876750 Sao Joao Da Boa Vista, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ASTROPHYSICS AND SPACE SCIENCE; v. 363, n. 7 JUL 2018. |
| Citações Web of Science: | 1 |
| Resumo | |
Analytical equations describing the velocity and energy variation of a spacecraft in a Powered Swing-By maneuver in an elliptic system are presented. The spacecraft motion is limited to the orbital plane of the primaries. In addition to gravity, the spacecraft suffers the effect of an impulsive maneuver applied when it passes by the periapsis of its orbit around the secondary body of the system. This impulsive maneuver is defined by its magnitude and the angle that defines the direction of the impulse with respect to the velocity of the spacecraft (). The maneuver occurs in a system of main bodies that are in elliptical orbits, where the velocity of the secondary body varies according to its position in the orbit following the rules of an elliptical orbit. The equations are dependent on this velocity. The study is done using the ``patched-conics approximation{''}, which is a method of simplifying the calculations of the trajectory of a spacecraft traveling around more than one celestial body. Solutions for the velocity and energy variations as a function of the parameters that define the maneuver are presented. An analysis of the efficiency of the powered Swing-By maneuver is also made, comparing it with the pure gravity Swing-by maneuver with the addition of an impulse applied outside the sphere of influence of the secondary body. After a general study, the techniques developed here are applied to the systems Sun-Mercury and Sun-Mars, which are real and important systems with large eccentricity. This problem is highly nonlinear and the dynamics very complex, but very reach in applications. (AU) | |
| 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: | 16/23542-1 - Manobras de Swing-By com uso de Impulsos e Cabos em Três Dimensões |
| Beneficiário: | Alessandra Ferraz da Silva Ferreira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| 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: | 17/04643-4 - Dinâmica e controle dos sistemas espaciais ligados por cabos (tether systems) |
| Beneficiário: | Denilson Paulo Souza dos Santos |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |