The need to shorten mission time (travel time to target planet) in missions to the outer planets prompts a search for alternatives to one-way minimum-energy transfers while continuing to minimize on-power thrusts. Gravity assists via swing-bys of inner planets are examined, with emphasis on a projected Venus-earth gravity assist (VEGA) and a combined solar electric propulsion and earth gravity assist (SEEGA). Gravity assists are also examined as essential for missions with sample returns back to earth. Possible use of such techniques in the Shuttle Interim Upper Stage (IUS) program is considered. Various SEEGA and VEGA trajectories are discussed and charted, and time lost in the launch orbit to earth re-encounter time is weighed against time gained by faster speed toward the mission destination.


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    Titel :

    Solar electric propulsion combined with earth gravity assist - A new potential for planetary exploration


    Beteiligte:
    Atkins, K. L. (Autor:in) / Sauer, C. G. (Autor:in) / Flandro, G. A. (Autor:in)

    Kongress:

    Astrodynamics Conference ; 1976 ; San Diego, CA


    Erscheinungsdatum :

    01.08.1976


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :




    Planetary photographic exploration with solar- electric propulsion.

    Dailey, C. C. / Katz, L. / Vachon, R. I. et al. | NTRS | 1967


    Planetary photographic exploration with solar- electric propulsion

    DAILEY, C. / KATZ, L. / VACHON, R. | AIAA | 1967


    Solar Electric Propulsion Gravity-Assist Tours for Jupiter Missions

    Strange, N. / Landau, D. / Hofer, R. et al. | British Library Conference Proceedings | 2012