Prado, Antonio F. B. A.Gomes, Vivian Martins [UNESP]Chanut, Thierry Gregory Gil [UNESP]2019-10-062019-10-062018-09-15Journal of the Astronautical Sciences, v. 65, n. 3, p. 355-375, 2018.2195-05710021-9142http://hdl.handle.net/11449/189857The main idea of this paper is to propose the construction of an “Escape Portal” to send a spacecraft to the exterior planets, or even to make it escape from the Solar System, using a Tethered Sling Shot Maneuver (TSSM) with an asteroid. The construction of this portal allows an unlimited number of maneuvers with the same tether, which is very interesting when considering a possible use for small satellites. This structure would be formed by a tether that remains fixed in an asteroid. At the other end of the tether, a large net is fixed, such that the only action required from the spacecraft to make the TSSM is to hit the net. The net can have a mechanism to open a passage to release the spacecraft when the desired rotation is obtained. This technique would avoid some of the problems that appear when assuming that the spacecraft needs to carry a tether on board that would be released to hit the asteroid just before the maneuver.355-375engAstrodynamicsEscape trajectoriesOrbital maneuversThetered maneuversArtigo10.1007/s40295-017-0120-xAcesso restrito2-s2.0-85056076871