Article

Methods of Experimental Investigation and Measurements
2020. V. 58. № 3. P. 436–440
Petrovsky V.P., Pakhomov E.P., Sheindlin M.A., Falyakhov T.M., Vasin A.A., Vervikishko P.S.
A method for evaluation of thermal characteristics of complex heat-shield assembles at extremely high energy fluxes
Annotation
A suitable laboratory test procedure is developed where a small fragment of the relatively thick multilayer heat shield is exposed to the extreme heat flux of up to several kW/cm$^2$ in order to evaluate its performance. A nearly one-dimensional test condition has been achieved, where thermal behavior of a small fragment of a large shield became representative for the large heat-shield panel. A cylindrical test sample made of carbon-carbon composite has been surrounded by high-temperature thermal isolation made of zirconia concrete. The high heat flux has been provided by a power CW-laser. The conditions of one-dimensional axial heat flux through the cylindrical fragment of the heat shield are confirmed by the mathematical modeling of the experiment using experimentally measured temperature excursions along the sample axis.
Article reference:
Petrovsky V.P., Pakhomov E.P., Sheindlin M.A., Falyakhov T.M., Vasin A.A., Vervikishko P.S. A method for evaluation of thermal characteristics of complex heat-shield assembles at extremely high energy fluxes, High Temp., 2020. V. 58. № 3. P. 436