On the Use of the Earth-Moon Lagrangian Point L1 for Supporting the Manned Lunar Exploration
Several space agencies are currently studying plans for returning humans to the Moon; ESA and the European industry, in particular, are conducting preliminary studies for the CSTS (Crew Space Transportation System) program. One of the scenarios under analysis involves a rendezvous between the crew transportation vehicle and the lunar lander (or a permanent space station) in the colinear Earth-Moon Lagrangian point L1. Trajectories for transferring between the Earth and orbits around these points, as well as from them to the lunar surface and back, taking into account mission requirements such as lunar global accessibility, any-time return, and mission duration, are investigated in this paper. The merits of these trajectories are compared to a more conventional mission architecture where the staging node is placed on a low lunar orbit.
KeywordsTransfer Time Lunar Surface Lagrangian Point Halo Orbit Transfer Trajectory
The authors thank Dr. Ettore Perozzi for organizing the workshop on “Novel Spaceways for Scientific and Exploration Missions”.
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