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LUNAR PROBE FLIGHT: INTRODUCTION TO FLIGHT GEOMETRY AND ACCURACY PROBLEMS,
ARMY BALLISTIC MISSILE AGENCY REDSTONE ARSENAL ALA
The report presents the flight geometry that describes the orbit of a lunar probe in relation to the movements of the terminal bodies, earth and moon. By choosing a suitable reference system and by simplifying the three body problem to a two body problem in neglecting the force field of the moon, the problem is amenable to an analytical approach that, though approximate, brings forward all characteristic features proper to the exact solution.