A preflight mission analysis of the Astronomical Netherlands Satellite (ANS) is presented, and first results of flight performance are reported. After the in-orbit checkout phase, the ANS appeared to be functioning well and had already collected scientific data for the three onboard experiments: UV, soft, and hard X-ray experiments. The orbit attained differs significantly from the planned sun-synchronous twilight orbit so that the X-ray experiments are affected considerably by the radiation belts. The acquisition phase, including yo-yo despin, was terminated well within the time allocated. Various attitude control maneuvers and limit cycle behavior followed closely preflight predictions. The X-ray pointing mode proved unfeasible due to high background interference in the hard X-ray detectors. It appears that the ANS can fulfill its mission objectives although, due to the attained orbit, this may require more time than originally anticipated.


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    Titel :

    Mission Analysis of the Astronomical Netherlands Satellite


    Beteiligte:
    W. H. Deleeuw (Autor:in) / A. Pouw (Autor:in)

    Erscheinungsdatum :

    1974


    Format / Umfang :

    32 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





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