The Explorer Platform (EP) program currently comprises two missions, the Extreme Ultraviolet Explorer (EUVE) and the X-ray Timing Explorer (XTE), each of which consists of a scientific payload mounted to the EP. The EP has no orbit maintenance capability. The EP with the EUVE payload will be launched first. At the end of the EUVE mission, the spacecraft will be serviced by the Space Transportation System (STS), and the EUVE instrument will be exchanged for the XTE. The XTE mission will continue until reentry or reservicing by the STS. Because the missions will be using the EP sequentially, the orbit requirements are unusually constrained by orbit decay rates. The initial altitude must be selected so that, by the end of the EUVE mission (2.5 years), the spacecraft will have decayed to an altitude within the STS capabilities. In addition, the payload exchange must occur at an altitude that ensures meeting the minimum XTE mission lifetime (3 years) because no STS reboost will be available. Studies were performed using the Goddard Mission Analysis System to estimate the effects of mass, cross-sectional area, and solar flux on the fulfillment of mission requirements. In addition to results from these studies, conclusions are presented as to the accuracy of the Marshall Space Flight Center solar flux predictions.


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    Titel :

    EUVE/XTE orbit decay study


    Beteiligte:
    Richon, K. (Autor:in) / Hashmall, J. (Autor:in) / Lambertson, M. (Autor:in) / Phillips, T. (Autor:in)


    Erscheinungsdatum :

    1988-09-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    EUVE/XTE (Extreme Ultraviolet Explorer/X-ray Timing Explorer) Orbit Decay Study

    K. Richon / J. Hashmall / M. Lambertson et al. | NTIS | 1988


    EUVE TELEMETRY STORAGE AND RETRIEVAL

    Girouard, F.R. | Online Contents | 1993


    STUDENT CONTRIBUTIONS TO THE EUVE PROJECT

    Moriarta, J. | Online Contents | 1993


    THE EUVE SATELLITE SURVEY DATABASE

    Craig, N. | Online Contents | 1993


    The EUVE satellite survey database

    Craig, N. / Chen, T. / Hawkins, I. et al. | NTRS | 1993