Method is described for determining initial conditions for computing moon to earth trajectories which will terminate near desired recovery site; theorems on symmetry of trajectories in earth-moon space are applied to determination of initial conditions for return flight; geometric constraints on approach directions and available recovery times to be expected are presented.
Recovery of lunar vehicles -- Geometric constraints on trajectories
Am Astronautical Soc -- Advances Astronautical Sciences
1963
21 pages
Article (Journal)
English
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