Accession Number : ADA309608

Title :   An Experimental Study of a Carbon-Phenolic Ablation Material.

Descriptive Note : Technical note,

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

Personal Author(s) : Sutton, Kenneth

PDF Url : ADA309608

Report Date : SEP 1970

Pagination or Media Count : 54

Abstract : The experimental results from a ground-test program are presented for a carbon-phenolic heat-shield material designated Narmco 4028. The tests were conducted in supersonic streams of air, nitrogen, and air-nitrogen mixtures at model stagnation pressures from 0.07 to 11 atmospheres (1 atmosphere equals 101.325 kN/m2) and stagnation enthalpies from 1100 to 11000 Btu/lbm (2.55 to 25.50 MJ/kg). Mechanical char removal of the material did not occur in the nitrogen tests but did occur in air and air-nitrogen mixtures at pressures as low as 2.4 atmospheres depending upon the oxygen mass fraction in the stream. The experimental results were compared with predictions from an ablation computer program.

Descriptors :   *HEAT SHIELDS, *CARBON PHENOLIC MATERIALS, THERMAL PROPERTIES, COMPUTER PROGRAMS, FIBER REINFORCED COMPOSITES, ORIENTATION(DIRECTION), CARBON FIBERS, THERMAL CONDUCTIVITY, SUPERSONIC FLOW, ENTHALPY, STAGNATION PRESSURE, HEAT RESISTANT MATERIALS, ABLATIVE MATERIALS, PHENOLIC PLASTICS.

Subject Categories : Plastics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE