This paper describes the servicing requirements, plans, and proposed Space Station-based servicing operations for the Space Infrared Telescope Facility (SIRTF) Observatory. SIRTF is a cryogenically-cooled, long-life, one meter class space telescope which will be operated by NASA as a free-flying observatory for infrared astronomy, in the mid-1990's. To achieve its 5-year lifetime requirement (10 year goal), SIRTF must be replenished periodically with cryogenic helium and have its life-limited modular subsystems replaced; capability for contingency repair of warm components will also be provided in the Observatory design. A general description of the SIRTF Observatory is given, including options for the support systems (spacecraft). The overall servicing philosophy and plans are addressed with scheduling and needed support elements described. A proposed Space Station-based servicing scenario is described, including orbital transfer, servicing and checkout operations. A detailed description and timeline for liquid helium replenishment operations is provided, including a conceptual design and technology development program for the cryogenic helium transfer dewar (tanker). Finally, a preliminary SIRTF spares/logistics philosophy is outlined, including tradeoffs to be considered.


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    Titel :

    Servicing operations for the SIRTF Observatory at the Space Station


    Beteiligte:

    Erscheinungsdatum :

    01.01.1987


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Servicing operations for the SIRTF Observatory at the Space Station

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    Brooks, W. F. / Melugin, R. K. / Lee, J. H. et al. | NTRS | 1986


    Concepts for on-orbit servicing of SIRTF

    Mord, A. J. / Urbach, A. R. / Poyer, M. E. et al. | NTRS | 1986


    SIRTF: The Fourth Great Observatory

    British Library Conference Proceedings | 1996


    SIRTF and the Space Station

    Werner, M. W. / Wiltsee, C. B. | NTRS | 1986