EXPERIMENTAL RESULTS ON THE COMBUSTION RATE OF GRAPHITE EXPOSED TO A PLASMA-ARC FLOW

Abstract

Experimental data are presented on the combustion rate of ATJ- graphite specimens at surface temperatures from 1600 to 4100 R. The specimens were flat-faced cylinders in a subsonic stagnationpoint air flow from a 200-kW electric plasma arc. A comparison is made with the recent theoretical results of Welsh and Chung for the combustion of graphite under conditions where the effects of boundary layer diffusion and heterogeneous kinetics are both significant in limiting the combustion rate. The comparison indicates qualitative agreement between theory and experiment. The combustion rate varied over an extended range, the lower portion of which is ascribed to the well- recognized effect of heterogeneous kinetics, and the upper portion is believed to reflect a change in the effective product of combustion at the surface.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 1963
Accession Number
AD0420941

Entities

People

  • W. E. Welsh Jr.

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Flow
  • Air Force
  • Boundary Layer
  • Burning Rate
  • Calorimeters
  • Carbon Monoxide
  • Combustion
  • Dielectric Gases
  • Energy
  • Heat Transfer
  • Jet Propulsion
  • Measurement
  • Space Systems
  • Spacecraft
  • Temperature Gradients
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Metallurgy
  • Petroleum Engineering