Equations are derived by using the maximum principle to maximize the payload of a reusable tug for planetary missions. The analysis includes a correction for precession of the space shuttle orbit. The tug returns to this precessed orbit (within a specified time) and makes the required nodal correction. A sample case is analyzed that represents an inner planet mission as specified by a fixed declination and right ascension of the outgoing asymptote and the mission energy. The reusable stage performance corresponds to that of a typical cryogenic tug. Effects of space shuttle orbital inclination, several trajectory parameters, and tug thrust on payload are also investigated.


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    Title :

    Optimal three-dimensional reusable tug trajectories for planetary missions including correction for nodal precession


    Contributors:
    Borsody, J. (author)

    Publication date :

    1976-02-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English