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    Volume 4, Issue 1

    Space Station Solar Array Joint Repair

    (Received 28 May 2015; accepted 24 August 2015)

    Published Online: 2015

    CODEN: MPCACD

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    Abstract

    In October 2007, the International Space Station (ISS) crew noticed a vibrating camera in the vicinity of Starboard Solar Alpha Rotary Joint (SARJ). It had less than 5 months of run time when the anomaly was observed. This 3.2 m-diameter bearing joint supports solar arrays that power the station critical to its operation. The crew performed an EVA to identify what was causing the vibration. It was discovered that one of the 3 bearing tracks of this unconventional bearing had significant spalling damage. This paper discussed the SARJ’s unique bearing design and the vulnerability in its design leading to the observed anomaly. The design of an SARJ vacuum test rig was also described along with the results of a life test that validated the proposed repair should extend the life of the SARJ a minimum of 18 years on-orbit.


    Author Information:

    Loewenthal, Stuart
    Lockheed Martin Space Systems Company, Sunnyvale, CA

    Allmon, Curtis
    Lockheed Martin Space Systems Company, Sunnyvale, CA

    Reznik, Carter
    Boeing Space Systems, Houston, TX

    Mcfatter, Justin
    Boeing Space Systems, Houston, TX

    Davis, Robert E.
    NASA Johnson Space Center, Houston, TX


    Stock #: MPC20150029

    ISSN:2165-3992

    DOI: 10.1520/MPC20150029

    Author
    Title Space Station Solar Array Joint Repair
    Symposium ,
    Committee F34