Accession Number : AD0733216

Title :   Heat Shielding of Space Vehicles,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Epishkin,Yu.

Report Date : 08 SEP 1971

Pagination or Media Count : 15

Abstract : The great variation of parameters of re-entry of space vehicles into the atmosphere determines various methods for heat shielding of their structures. Four such methods are known: heat sink, forced cooling, emission radiation, and heat protective coating. Since heat-shielding materials may differ in the components entering into the composition, their percent content, technology of manufacture, then naturally it is necessary to sample and evaluate their effectiveness. Testing for this purpose is performed either in electric arc tubes or on installations where creating heat flows uses made of liquid and solid propellant engines. In many practically important cases, removal of material from the surface of the coating is not great and here the depth of heat penetration is of great significance. In order to reduce heating through, complex heat shielding schemes are used. In so doing, under the layer of the upper heat-shielding coating one or several heat-shielding layers with low thermal conductivity and small volume weight are placed. With the growth of re-entry, the weight of heat shielding comprises an already significant part of the weight of the whole vehicle. Therefore great significance is attached to the study of the behavior heat-shielding materials under conditions of high radiative heat flows. (Author)

Descriptors :   (*MANNED SPACECRAFT, *HEAT SHIELDS), ATMOSPHERE ENTRY, ABLATION, HEAT TRANSFER, COATINGS, USSR

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE