A life test of lubricants for the R2 shaft bearings of a spacecraft oscillating scanner mechanism was performed under simulated orbital conditions. The lubricant originally used in the application, a chloroarylalkylsiloxane (CAS) oil, and a linear perfluoropolyalkylether (PEPE) oil failed in less than 2500 h or operation. A poly-alpha-olefin (PAO) oil has been running for more than 11,000 h without any indication of lubricant or system degradation. The performances of the oils are discussed in terms of the boundary lubrication conditions of the test. Keywords: Degradation, Lubricants, Oscillating spacecraft mechanism, Perfluoropolyalkylether wear tests. (JS)


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    Title :

    Comparison of Lubricant Performance in an Oscillating Spacecraft Mechanism


    Contributors:

    Publication date :

    1990


    Size :

    30 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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