Effect of Environmental Parameters on the Performance of Low-Density Silicone-Resin and Phenolic-Nylon Ablation Materials.

Abstract

Thermal performance data were obtained for low-density phenolic-nylon and low-density silicone resin in the 2500-kilowatt arc jet at the Langley Research Center over a range of heating rates from 10 to 242 Btu/sq ft-sec (0.113 to 2.75/sq m ) and a range of aerodynamic shear stresses from 0 to 7.2 lb/sq ft (0 to 344 N/sq m) at Jet-stream oxygen concentrations ranging from 0 to 23 percent. With use of these data, analyses were made of the relative effect of environmental parameters such as heating rate, free-stream oxygen concentration, stagnation enthalpy, and aerodynamic shear stress on the performance of these materials. jg p3

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1965
Accession Number
ADA306098

Entities

People

  • Ronald K. Clark

Organizations

  • National Aeronautics and Space Administration

Tags

DTIC Thesaurus Topics

  • Boundary Layer
  • Chemical Reactions
  • Coefficients
  • Equations
  • Flow Rate
  • Free Stream
  • Heat Transfer
  • Jet Streams
  • Low Density
  • Mass Flow
  • Mass Transfer
  • Materials
  • Photographs
  • Pyrolysis
  • Shear Stresses
  • Silicone Plastics
  • Surface Temperature

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Polymer Science and Engineering.
  • Thermal Physics or Thermal Science.