RETROGRADE AND DIRECT POWERED AERO-GRAVITY-ASSIST TRAJECTORIES AROUND MARS

Autor(es)

Murcia, J. O. ^{[1, 2]} ; Prado, A. F. B. A. ^{[3, 1]} ; Gomes, V. M. ^[4]

Afiliação do(s) autor(es)

^[1] Natl Inst Space Res, INPE, Av Astronautas 1758, Apartado Postal 12227-010, Sao Jose Dos Campos - Brazil

^[2] Natl Inst Space Res, INPE, Course Engn & Space Technol, Space Mech & Control, Sao Jose Dos Campos - Brazil

^[3] Natl Inst Space Res, INPE, Grad Sch, Sao Jose Dos Campos - Brazil

^[4] Sao Paulo State Univ, UNESP, Sch Engn, Guaratingucta, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA; v. 54, n. 1, p. 143-161, APR 2018.
• Citações Web of Science: 2

Resumo

A Gravity-Assist maneuver is used to reduce fuel consumption and/or trip times in interplanetary missions. It is based in a close approach of a spacecraft to a celestial body. Missions like Voyager and Ulysses used this concept. The present paper performs a study of a maneuver that combines three effects: the gravity of the planet, the application of an impulsive maneuver when the spacecraft is passing, by the periapsis and the effects of the atmosphere of the planet. Direct and retrograde trajectories are considered, with particular attention to the differences due to the higher relative velocity between the spacecraft and the atmosphere, which increases the effects of the atmosphere. The planet Mars is used for the numerical examples. (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: 16/24561-0 - A relevância dos pequenos corpos em dinâmica orbital
• Beneficiário: Othon Cabo Winter
• Modalidade de apoio: Auxílio à Pesquisa - Temático