Six flat-disk models made of carbon-carbon and carbon-phenolic materials were launched in an argon-filled track-range facility to test ablation characteristics in a radiation-dominated, massive-blowing environment. The shock standoff distances deduced from the shadowgraphs agree with theoretical predictions during the earlier portion of the flight, while the wall temperatures determined by the image-converter photographs agree with predictions during the later portion. The measured surface recessions exceed the calculated values by about 60 percent for carbon-phenolic and 30 percent for carbon-carbon. The discrepancies are attributed to spallation. The measured char thicknesses agree with theoretical predictions.


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    Title :

    Stagnation-point ablation of carbonaceous flat disks. II Experiment


    Contributors:
    Park, C. (author)

    Published in:

    Publication date :

    1983-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English