Term, fixed launch azimuth window "pane", is used to describe time period within variable launch azimuth window within which it is possible to launch into specific geographically fixed orbit from which it is possible to attain free return circumlunar trajectories using coplanar injection; paper shows picture of factors determining length of panes in terms of parking orbit launch time, variation of injection conditions within different panes, and variation of characteristics of all attainable free return circumlunar trajectories within different panes.
Free return circumlunar trajectories from launch windows with fixed launch aximuths
Progress Astronautics Aeronautics -- Celestial Mechanics Astrodynamics
1964
33 pages
Article (Journal)
English
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