The ram impact of low Earth orbital atomic oxygen causes oxidation of spacecraft materials including polymers such as polyimides. The rate of oxidation is sufficiently high to potentially compromise the long, term durability of Kapton solar array blankets. Ion beam sputter deposited atomic oxygen protective coatings of aluminum oxide, silicon dioxide, and codeposited silicon dioxide with small amounts of polytetrafluoroethylene were evaluated both in RF plasma asher tests and in low Earth orbit. Deposition techniques, mechanical properties, and atomic oxygen protection performance are presented.


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    Title :

    Protection of solar array blankets from attack by low earth orbital atomic oxygen


    Additional title:

    Oberflaechenschutz von Solarbatterien im Weltraum gegen die Einwirkung von erdnahem, atomaren Sauerstoff


    Contributors:
    Banks, B.A. (author) / Mirtich, M.J. (author) / Rutledge, S.K. (author) / Nahra, H.K. (author)


    Publication date :

    1985


    Size :

    6 Seiten, 7 Bilder, 2 Tabellen, 12 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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