Experimental investigation of the boundary layer on ablating specimens in the joint presence of convective and radiant heat fluxes

The emission spectrum of the boundary-layer vapor on the interval 3800–6600 Å is presented for a specimen of asbestos-filled plastic in the air-plasma flow created by an electrodeless high-frequency discharge. The temperature profile in the boundary layer has been measured in the neighborhood of the stagnation point. A model of the boundary layer on an ablating specimen is proposed and the convective component of the heat flow to it is estimated.Moscow. Translated from Izvestiya Akademii Nauk SSSR. Mekhanika Zhidkosti i Gaza, No. 2, pp. 25–29, March–April, 1972.