This paper shows that it is possible to deliver a payload of 600 to 2000 kg to a 300-km circular orbit at Mercury, using the presently available NASA STS and a single-stage bipropellant chemical rocket. This superior payload performance is attained by swingbys of Venus, plus more importantly, the use of the reverse Delta-V/EGA process. In contrast to the familiar Delta-V/EGA process used to boost the launch energy by returning to earth for a gravity assist, the reverse process reduces the Mercury approach energy each time a spacecraft makes a near-resonant return to Mercury for a gravity assist and reduces the orbit-capture Delta-V requirement. The mission sequences for such high-performance missions are described, and example mission opportunities for the years 1990 to 2010 are presented.


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    Titel :

    Ballistic Mercury orbiter mission via Venus and Mercury gravity assists


    Beteiligte:


    Erscheinungsdatum :

    01.09.1989



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



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    Hollenbeck, G. R. / Roos, D. G. / Lewis, P. S. | NTRS | 1973


    Ballistic Mode Mercury Orbiter Mission Opportunity Handbook

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    Ballistic Mode Mercury Orbiter Mission Opportunity Handbook Extension

    G. R. Hollenbeck / P. S. Lewis / P. C. Rockenbach | NTIS | 1974