The Space Station is a Laboratory that presents, in general, a good base for a big variety of payloads, even having different or conflicting requirements. In nominal conditions the ISS is characterized by a large inclination of the orbit (51.6 deg) and by an attitude close to LVLH during the TEA (Torque Equilibrium Attitude) mode. The Station fullfils the great part of the experiments requirements, but few specific kinds of instruments have pointing requirements that impose the use of a pointing system. ESA has indentified, for the Space Station, two pointing systems: Coarse Pointing Device (CPD) and Hexapod. While the first, devoted to Solar/Astronomy observation payloads, requires a coarse accuracy (1 deg) over a big range (+/-40 deg), the second, dedicated to SAGE III, can be used to point with an accuracy of +/- 30 arcsec over a shorter range (+/- 10 deg). This paper presents a description of an Hexapod pointing system designed for a specific application. The system requirements, scenario and performances for the particular application are summarized in the paper, together with the main kinematics, mechanical and electronic aspects. The paper summarizes the output of the kinematic analysis outlining the main results in terms of motion strategies, kinematic algorithms and working envelopes, both when in normal conditions and when degraded due to an actuator failure.


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    Title :

    Hexapod pointing system


    Additional title:

    Beschreibung des HEXAPOD-Systems für die Ausrichtung des Satellitensystems des SAGE III - Projektes


    Contributors:
    Trucco, R. (author) / Galeone, P.C. (author) / Pepe, F. (author)


    Publication date :

    1997


    Size :

    8 Seiten, 12 Bilder, 1 Tabelle




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    HEXAPOD Pointing System

    Ballesio, M. / European Space Agency | British Library Conference Proceedings | 1997


    Hexapod Pointing System

    Trucco, R. / Galeone, P. C. / Pepe, F. | British Library Online Contents | 1997


    HEXAPOD Pointing System

    Ballesio, M. | British Library Online Contents | 1997


    The Hexapod Pointing System

    Galeone, P. C. / European Space Agency | British Library Conference Proceedings | 1996


    The Hexapod Pointing System

    Galeone, P. C. et al. | British Library Online Contents | 1996