Thermal analyses are discussed which illustrate that the heat losses to the rock surrounding small-diameter, refractory metal, prototype Subterrene rock-melting penetrators can be predicted. A simplified right-cylinder model configuration is considered. The results of a parametric study of the heat loss as a function of penetrator diameter and length, penetration rate, rock- melting temperature, and rock thermal properties are presented. The demonstrated ability to predict the thermal performance of a penetrator establishes the possibility of optimizing the system. Increased thermal efficiency for higher penetration rates is predicted. Calculated and experimental heat-loss values are shown to agree well. /AUTHOR/

  • Supplemental Notes:
    • Report sponsored by the National Science Foundation and the U.S. Atomic Energy Commission.
  • Corporate Authors:

    Los Alamos National Laboratory

    P.O. Box 1663
    Los Alamos, NM  United States  87545
  • Authors:
    • Murphy, D J
    • Gido, R G
  • Publication Date: 1973-2

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00126354
  • Record Type: Publication
  • Report/Paper Numbers: LA-5207-ms
  • Contract Numbers: W-7405-ENG.36
  • Files: TRIS
  • Created Date: Apr 21 1976 12:00AM