TED-AJ03-155 Experimental Evaluation of Hot Films on Ceramic Substrates for Skin Friction Measurement

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概要

• 論文の詳細を見る

• An investigation of the use of low-thermal conductivity, ceramic substrates for hot films intended to measure skin friction has been performed. Hot films were deposited on two types of ceramic substrates. Four hot films used composite-ceramic substrates with sub-surface thermocouples. In addition, two hot films have been deposited on thin Macor^[O!R] substrates. All six sensors were tested side-by-side in the wall of NASA Glenn's 8'x6' Supersonic Wind Tunnel. The present paper summarizes the results of these tests. Data was obtained from no-flow to Mach 1.98 in air. Control measurements were made with three Preston tubes and two boundary layer rakes. The tests were repeated at two different hot film power levels. All hot films and sub-surface thermocouples functioned throughout the three days of testing. At zero flow, the films on the higher-conductivity Macor^[O!R] substrates required roughly twice the power as those on the composite ceramic substrates. Skin friction results were consistent with the control measurements. Estimates of the conduction heat losses were made using the embedded thermocouples but were hampered by variability in coating thicknesses and thermocouple locations.

• 一般社団法人日本機械学会の論文

著者

• Lavine Adrienne

  Mechanical And Aerospace Engineering Department University Of California

• NOFFZ GREGORY

  NASA Dryden Flight Research Center

• HAMORY PHILIP

  NASA Dryden Flight Research Center

• Lavine Adrienne

  Mechanical Aerospace And Nuclear Engineering Dept. Univ. Of California Los Angeles

関連論文

• Thermomechanical Modeling of Thin Film Shape Memory Alloy Devices
• TED-AJ03-155 Experimental Evaluation of Hot Films on Ceramic Substrates for Skin Friction Measurement
• Hyperbolic Heat Conduction in Thin Domains

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