Computation and Optimization of Lunar Orbit Insertion from a Fixed Free Return

作者：Jesick Mark^*; Ocampo Cesar

来源：Journal of the Astronautical Sciences, 2011, 58(1): 35-53.

In support of future human missions to the Moon, the present research combines free return trajectories with lunar orbit insertion (LOT) sequences to provide both crew safety and selenographic versatility. Because future missions necessitate global lunar access, the required spacecraft plane change at the Moon may be large enough that a multi-maneuver sequence offers velocity impulse cost savings. Approximating the Earth-Moon system with the circular restricted three-body model, this paper develops a targeting and optimization procedure to transfer a spacecraft from a lunar free return trajectory to a closed lunar orbit through a multi-maneuver LOT sequence. Thus, a safe Earth-return for crew is guaranteed while not compromising the ability to achieve any lunar orbit.

• 出版日期2011-3