A STUDY OF EARTH-MARS INTERPLANETARY TRANSFER USING SPACEPORTS AT THE HALO ORBITS OF SUN - EARTH AND SUN - MARS SYSTEM

摘要

Spacecraft space transportation systems using spaceports in the vicinity of libratoin points in the restricted Hill three-body problem are analyzed. This application is motivated by future proposals to place "deep space ports" at the Earth and Mars L1/L2 points. We utilize unstable and stable manifolds for escape and capture trajectories to/from periodic orbits around the libration points. Applying to Earth-Mars transfer, the way of linking interplanetary transfer trajectories with the unstable/stable manifold is discussed. As a result, if spaceports are built on each periodic orbit in the vicinity of Sun-Earth and Sun-Mars libration points so that payloads are transferred there from space vehicle exclusively used at Earth to interplanetary cargo ship and from interplanetary cargo ship to space vehicle exclusively used and at Mars, the propellant carried with payload from the Earth by the interplanetary vehicle for interplanetary transfer can be considerably reduced compared with a direct transfer case.