Accession Number : ADA307179

Title :   Effect of Composition, Density, and Environment on the Ablative Performance of Phenolic Nylon.

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Swann, Robert T. ; Brewer, William D. ; Clark, Ronald K.

PDF Url : ADA307179

Report Date : APR 1967

Pagination or Media Count : 31

Abstract : Ablative materials are commonly used to protect spacecraft from the thermal environment which is encountered when entering planetary atmospheres. Materials which char when heated provide the best protection in many cases. Many char-forming materials have been formulated and tested; a mixture of phenolic resin and nylon is representative of the best performing of these ablative materials. Good thermal-protection performance has been demonstrated for a mixture of 25 percent powdered phenolic resin, 50 percent powdered nylon, and 25 percent phenolic Microballoons, molded to a density of 36 lbm/cu ft (580 kg/cu meters). (Percentages are based on weight.) p3

Descriptors :   *DENSITY, *ENVIRONMENTS, *NYLON, *ABLATIVE MATERIALS, *PHENOLIC PLASTICS, THERMAL PROPERTIES, ABLATION, SPACECRAFT, POWDERS, MIXTURES, HEAT, COMPOSITION(PROPERTY), MOLDINGS, PHENOLS, CHARRING, PLANETARY ATMOSPHERES.

Subject Categories : Plastics
      Miscellaneous Materials
      Astronautics

Distribution Statement : APPROVED FOR PUBLIC RELEASE