Shock Interference Peak Heating Measurements using Phase Change Coatings
Abstract
The phase change coating technique is used to obtain peak heating measurements in shock interference flow regions with high surface shear and heating. This technique provides heat transfer coefficients which are determined by measuring the time for a point on the surface to reach the phase change temperature of the thin fusible coating. Measurements were conducted on a 5.08-cm diameter hemisphere-cylinder made of silica based epoxy at Mach 6 for free stream Reynolds numbers of 3.3 to 25.6 million per meter. A sketch of the shock interference pattern produced by a flat plate shock generator is included. Heating data obtained on a 5.08-cm diameter stainless steel hemispherical model instrumented with thermocouples is presented for the purpose of comparing the phase change technique with the thermocouple-calorimeter technique.
- Publication:
-
Journal of Spacecraft and Rockets
- Pub Date:
- January 1976
- DOI:
- 10.2514/3.27884
- Bibcode:
- 1976JSpRo..13...61K
- Keywords:
-
- Aerodynamic Heat Transfer;
- Coatings;
- Heat Measurement;
- Phase Transformations;
- Shock Heating;
- Aerodynamic Interference;
- Diffraction Patterns;
- Epoxy Resins;
- Free Flow;
- Heat Transfer Coefficients;
- Shear Layers;
- Thin Films;
- Fluid Mechanics and Heat Transfer