The concept of passive surface error control via tension is explored for flexible square panels and for a rectangular array of such panels suspended with four catenaries. The panels are 1 mm thick 1 m square graphite-epoxy composite plates with a four-ply symmetric layup. Individual panel response to a uniform through-thickness temperature gradient field both alone and combined with in-plane tension (stretch) are examined. When integrated into a 2×5 grid (a simple phased array configuration), the effects of a transient slew are considered. Characteristic responses are identified and studied symbolically as well as numerically. The results demonstrate the feasibility of combined global and component-level error suppression for the considered structure, exercised singularly by global prestress that also maintains the integrity of the tension structure. Limited attention is paid to mission-specific issues such as stowage and deployment. Assuming an X-band radar context, surface errors are related to a 1 mm limit. Out-of-flatness is evaluated with three metrics relevant to different aspects of signal processing: the maximum depth of the deformed surface, its maximum lateral deviation from the best-fit plane, and the phased-array radiometric rms surface error. This paper is based on an earlier publication presented as Paper 2010-2748 at the 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Orlando, FL, 12-15 April 2010


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    Title :

    Error Suppression via Tension for Flexible Square Antenna Panels and Panel Arrays



    Published in:

    Publication date :

    2015




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik / 55.60 / 50.93 / 55.50 / 50.93 Weltraumforschung
    Local classification TIB:    770/7040



    Error Suppression via Tension for Flexible Square Antenna Panels and Panel Arrays

    Greschik, Gyula / Mejia-Ariza, Juan M. / Murphey, Thomas M. et al. | AIAA | 2015


    Error Control via Tension for an Array of Flexible Square Antenna Panels

    Greschik, Gyula / Mejia-Ariza, Juan | AIAA | 2010


    Error Control via Tension for an Array of Flexible Square Antenna Panels

    Greschik, G. / Mejia-Ariza, J. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2010