English

Lunar Trajectory Geometry

Document identifier: TM-69-2011-3 The principal features of earth-moon trajectories are analyzed using a geometric approach and "patched conic" trajectories. The influence of significant parameters is shown in a step by step manner until a comprehensive picture of earth-moon trajectories is created. In addition, a series of plots of the aimpoint on the moon's sphere of influence for various Keplerian elements of the trajectories is included. These plots, together with the analysis presented, provide the basis for a thorough understanding of the geometry of lunar trajectories. The techniques developed are used to illustrate some of the significant features of lunar landing missions and free return circumlunar trajectories.

Sign in with your free account to read, download EPUBs or listen.