@Article{PiñerosPradGome:2018:ReDiPo,
               author = "Piñeros, Jhonathan Orlando Murcia and Prado, Antonio Fernando 
                         Bertachini de Almeida and Gomes, Vivian Martins",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade Estadual 
                         Paulista (UNESP)}",
                title = "Retrograde and direct powered aero-gravity-assist trajectories 
                         around mars",
              journal = "Revista Mexicana de Astronom{\'{\i}}a y Astrof{\'{\i}}sica",
                 year = "2018",
               volume = "54",
                pages = "143--161",
             keywords = "Astrodin{\^a}mica, celestial mechanics, planets and satellites: 
                         atmospheres, space vehicles.",
             abstract = "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. RESUMEN: Se emplea 
                         una maniobra asistida por la gravedad para reducir el consumo de 
                         combustible y/o el tiempo de vuelo en misiones interplanetarias. 
                         La maniobra se basa en un acercamiento entre la nave y el planeta. 
                         El Voyager y el Ulysses emplearon este concepto. Aqu´\ı, 
                         estudiamos una maniobra que combina tres efectos: la gravedad del 
                         planeta, la aplicaci´on de un impulso cuando la nave pasa por 
                         periapsis, y los efectos de la atm´osfera del planeta. Se 
                         consideran trayectorias directas y retr´ogradas, con particular 
                         atenci´on en las diferencias causadas por la mayor velocidad 
                         relativa entre la nave y la atm´osfera, las cuales incrementan el 
                         efecto de esta ´ultima. Se presentan ejemplos num´ericos para el 
                         planeta Marte.",
                 issn = "0185-1101",
                label = "lattes: 7340081273816424 2 PiñerosPradGome:2018:REDIPO",
             language = "en",
        urlaccessdate = "28 abr. 2024"
}