This technical report describes two truss experiments flown on the NASA KC-135 Reduced Gravity Aircraft. The purpose of these experiments was to investigate large space structure dynamics, ground test methods, and passive and active damping. A 2-meter truss was first flown to determine the rigid body dynamics in the aircraft during zero-gravity. The second flight's objective was to measure structural modes of a 12-meter truss, which represented a space structure component. Typically five to ten seconds of zero gravity data were recorded for each parabolic arc. Flight test results are compared with ground testing in which a low restraint spring mechanism was used to suspend the truss. Good correlation between ground and flight test results was achieved; the major differences were caused by suspension system friction, which coupled the frame modes with the bending and torsion modes.


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    Titel :

    Space Truss Zero Gravity Dynamics


    Beteiligte:
    A. D. Swanson (Autor:in) / W. Yuen (Autor:in) / J. R. Mackaman (Autor:in)

    Erscheinungsdatum :

    1993


    Format / Umfang :

    49 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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