Unit S3 of the Hughes Vuilleumier (VM) Cryocooler Program has undergone accelerated life testing at twice the service speed expected in a normal unit. Debris samples were obtained from all areas of the cooler; samples of the regenerator balls were collected from the second and third stages only. The debris has been identified by an investigative analysis using the analytical techniques of X-ray diffraction, IMMA, and SEM/EDXS. Most of the particulates contain a combination of Iron, Chromium, and Nickel or Molybdenum Niobium compounds.


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    Title :

    Analysis of Debris from Accelerated Life Test of the Hughes Five-Year Vuilleumier Cryocooler


    Contributors:
    D. C. Cranmer (author) / E. J. Watts (author)

    Publication date :

    1987


    Size :

    17 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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