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    Feasibility Assessment of Deployable Composite Telescope

    Source: Journal of Aerospace Engineering:;2011:;Volume ( 024 ):;issue: 001
    Author:
    Arup K. Maji
    ,
    Mark Harris
    ,
    Daniel Garcia
    ,
    Brett J. deBlonk
    DOI: 10.1061/(ASCE)AS.1943-5525.0000045
    Publisher: American Society of Civil Engineers
    Abstract: Volume constraints in existing launch vehicles require large space-based sensors to be folded during launch and subsequently deployed in space. This paper outlines the development of a prototype deployable astronomical telescope that would maintain both structural stability and optical alignment for potential space-based deployment. To achieve this goal, the structure must possess adequate stiffness and maintain its positional accuracy after a deployment cycle has ensued. The development and testing were based on a consumer-astronomy Newtonian telescope. A foldable carbon-epoxy composite replacement structure was integrated to replace the aluminum-truss assembly provided by the manufacturer. The composite telescope’s structure and optical output were evaluated using computational (finite-element analyses and closed-form equations) and experimental methods. The structure was subjected to postdeployment displacement tests to quantify alignment accuracy. The stresses introduced in folding the tape springs were evaluated for both magnitude and mode of failure using the Tsai-Wu failure criterion.
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      Feasibility Assessment of Deployable Composite Telescope

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    http://yetl.yabesh.ir/yetl1/handle/yetl/56184
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    contributor authorArup K. Maji
    contributor authorMark Harris
    contributor authorDaniel Garcia
    contributor authorBrett J. deBlonk
    date accessioned2017-05-08T21:33:40Z
    date available2017-05-08T21:33:40Z
    date copyrightJanuary 2011
    date issued2011
    identifier other%28asce%29as%2E1943-5525%2E0000045.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/56184
    description abstractVolume constraints in existing launch vehicles require large space-based sensors to be folded during launch and subsequently deployed in space. This paper outlines the development of a prototype deployable astronomical telescope that would maintain both structural stability and optical alignment for potential space-based deployment. To achieve this goal, the structure must possess adequate stiffness and maintain its positional accuracy after a deployment cycle has ensued. The development and testing were based on a consumer-astronomy Newtonian telescope. A foldable carbon-epoxy composite replacement structure was integrated to replace the aluminum-truss assembly provided by the manufacturer. The composite telescope’s structure and optical output were evaluated using computational (finite-element analyses and closed-form equations) and experimental methods. The structure was subjected to postdeployment displacement tests to quantify alignment accuracy. The stresses introduced in folding the tape springs were evaluated for both magnitude and mode of failure using the Tsai-Wu failure criterion.
    publisherAmerican Society of Civil Engineers
    titleFeasibility Assessment of Deployable Composite Telescope
    typeJournal Paper
    journal volume24
    journal issue1
    journal titleJournal of Aerospace Engineering
    identifier doi10.1061/(ASCE)AS.1943-5525.0000045
    treeJournal of Aerospace Engineering:;2011:;Volume ( 024 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian