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COBEM 2019
25th International Congress of Mechanical Engineering
TRANSFERS BETWEEN COPLANAR CIRCULAR ORBITS AROUND EARTH WITH A LUNAR POWERED SWING-BY
Submission Author:
Francisco Junior , SP
Co-Authors:
Francisco Junior, Luiz Arthur Gagg Filho, Sandro da Silva Fernandes
Presenter: Sandro da Silva Fernandes
doi://10.26678/ABCM.COBEM2019.COB2019-0570
Abstract
This work deals with the problem of transferring a space vehicle from a circular low Earth orbit (LEO) to a circular high Earth orbit (HEO) using a powered swing-by maneuver with the Moon. It is assumed that initial and final orbits are coplanar. A patched-conic approximation, based on the two-body dynamics, is used to describe the powered swing-by maneuver with the application of an intermediate impulse at the perilune. A Hohmann transfer between the elliptic orbit, described by the spacecraft after leaving the sphere of influence of the Moon, and the prescribed HEO is applied to complete the maneuver. Numerical simulations show that fuel saving can be obtained through such maneuver depending on the ratio between the radius of the initial and final orbits and the geometry of the swing-by defined by a phase angle and the altitude of perilune.
Keywords
powered swing-by, transfers between circular orbits, patched-conic approximation, Hohmann transfers
