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    • Environmental Testing and Analysis of a Boom Deployment Mechanism for GOSSAMER-2

    Paper number

    IAC-15,C2,2,4,x28792

    Author

    Mr. Sebastian Meyer, German Aerospace Center (DLR), Germany

    Coauthor

    Mr. Martin Zander, German Aerospace Center (DLR), Germany

    Coauthor

    Mr. Marco Straubel, Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Germany

    Coauthor

    Prof. Christian Hühne, German Aerospace Center (DLR), Germany

    Year

    2015

    Abstract
    DLR currently develops several deployment mechanisms for solar sailing spacecrafts. Two missions are currently in progress. One is the Gossamer-1 mission in which a 5 m by 5 m solar sail technology demonstrator is developed; the second is the planned, up scaled successor Gossamer-2 with a size of 20 m x 20 m. One goal of the development process in these missions is to achieve a deployment mechanism, which can be scaled up and used in future missions with larger sail areas (Gossamer-2: 20 m x 20 m, Gossamer-3: 50 m x 50 m) and later science missions. Within the DeployTech project the scalability of the Gossamer-1 deployment principle and mechanisms is being demonstrated for the Gossamer-2 size. DLR designed an up-scaled boom deployment mechanism, based on the smaller Gossamer-1 design, for a 14 m long CFRP boom with a double omega shaped cross section.

In this paper the concept and design of the up-scaled boom deployment mechanism are described, followed by the main part that addresses the environmental testing performed on the prototype of the up-scaled boom deployment unit. In a detailed manner the objectives, the test procedure and the results from thermal-vacuum, vibration and functional deployment tests are presented. Furthermore FE-Analyses for simulating the vibration tests are performed. In this regard the used FE-model is described and the obtained results are shown in detail. Consequently the simulated and measured results are compared and discussed.
    Abstract document

    IAC-15,C2,2,4,x28792.brief.pdf

    Manuscript document

    IAC-15,C2,2,4,x28792.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.