Manned Mars stopover missions of 12 to 15 mo duration are characterized by Earth return velocities ranging up to 68,000 fps over cycle of mission opportunities; promising mode for reducing Earth entry velocities to 40,000 to 53,000 fps without increasing spacecraft gross weight is swing-by through gravitational field of Venus; technique can be applied to all Mars mission opportunities, and in about one-third of them, propulsion requirements can be reduced below minimum direct mode values; possible spacecraft configurations are presented, typical trajectory paths indicated, and tradeoffs between Earth velocity, trip duration, and propulsion requirements shown.


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    Title :

    Manned Mars trips using Venus flyby modes


    Additional title:

    J Spacecraft Rockets


    Contributors:
    Sohn, R.L. (author)

    Published in:

    Publication date :

    1966


    Size :

    9 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :