THIN-FILM HEAT TRANSFER GAGES

Abstract

An extensive literature survey on thin-film heat transfer gages was accomplished and pertinent references are listed. Methods and techniques for fabricating, calibrating, and using thin-film gages are discussed. Thin-film gages were fabricated using liquid platinum paint applied to a quartz backing material, and were calibrated using the electrical single pulse method. Rates of heat transfer were determined for a station on the wall of a shock tube for the laminar boundary layer flow condition immediately after shock wave passage for shock Mach numbers between 1.15 and 2.50. The variation of the wall surface temperature with time associated with shock wave passage was also determined. The results were correlated with theoretically predicted values and with the experimental results given by Hartunian and Weatherston. The thin-film gages constructed for this study had determined values of 1/2 square root of (pi rho kc) of 0.067 plus or minus 0.005 B/sq ft F square of sec, and measured values for sensitivity of resistance to temperature ranging from 0.000905 to 0.001375 ohm/ohm F.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1966
Accession Number
AD0632394

Entities

People

  • John William Frye Jr.

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Boundary Layer
  • Boundary Layer Flow
  • Climate Change
  • Control Panels
  • Engineering
  • Heat Transfer
  • Laminar Boundary Layer
  • Mach Number
  • Measurement
  • Photographs
  • Pressure Gages
  • Steady State
  • Surface Temperature
  • Thermal Conductivity
  • Thin Films

Readers

  • Fluid Dynamics.
  • Thermal Physics or Thermal Science.