Measurements of Earth's atmosphere as it occults sunlight can be obtained advantageously from a spacecraft placed in the proximity of the Sun-Earth Lagrange point L2. Maintaining the condition of continuous solar occultation by all parts of the atmospheric disk requires that the displacement of the spacecraft perpendicular to the Sun-Earth line remains less than 200 km. However, the gravitational force exerted by the Earth s moon must be negated by propulsion in order to meet this rather tight constraint. We provide an estimate of propulsive force needed to keep the spacecraft coincident with L2, as well as estimates of velocity increments needed to maintain various trajectories in the close vicinity of L2.


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    Titel :

    Keeping a Spacecraft on the Sun-Earth Line


    Beteiligte:


    Erscheinungsdatum :

    2005-04-01


    Medientyp :

    Preprint


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Keeping a Spacecraft on the Sun-Earth Line

    Roithmayr, Carlos M. | Online Contents | 2005


    Keeping a Spacecraft on the Sun-Earth Line

    C. M. Roithmayr / L. Kay-Bunnell | NTIS | 2005


    Keeping a Spacecraft on the Sun-Earth Line

    Roithmayr, Carlos M. / Kay-Bunnell, Linda | Springer Verlag | 2005


    Keeping a Spacecraft on the Sun-Earth Line

    Roithmayr, Carlos M. / Kay-Bunnell, Linda | Online Contents | 2005


    Keeping a Spacecraft on the Sun-Earth Line (AAS 04-246)

    Roithmayr, C. M. / Kay-Bunnell, L. / American Astronautical Society | British Library Conference Proceedings | 2005