Four Brayton rotating units (BRU) developed by an American company were tested in connection with studies concerning the feasibility to use closed Brayton power conversion systems for space applications. The rotating assembly operates at a speed of 36,000 rpm and consists of a radial outflow compressor, a four-pole Rice alternator/motor, and a radial inflow turbine. The cycle working fluid consists of a mixture of helium and xenon. After 20,000 hours of operation, there was no apparent wear on failure mode to prevent attainment of the 5-year BRU design life objective.


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    Title :

    NASA 30,000 hour test demonstration of closed Brayton cycle reliability


    Contributors:

    Conference:

    Conference on the Future of Aerospace Power Systems ; 1977 ; St. Louis, MO


    Publication date :

    1977-03-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





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