| 摘要 |
mechanical engineering; engines. SUBSTANCE: heat protection structure and its design versions relate to elements exposed to action of high temperatures, for instance, in manufacture of combustion chambers of ramjet engines or external heat shielding plates of aircraft. This heat protection structure and its design versions includes ejection cooling devices delivering first cooling liquid medium out of indicated structure, convection cooling devices including second cooling liquid medium circulating inside structure, channel in which liquid medium containing first and second cooling media circulates. Heat protection structures include also heat barrier forming at least part of outer wall of structure in which holes can be made to provide ejection of first cooling medium or building hydraulic resistance which depends of hydraulic resistance inside channel. Heat protection structure includes additionally special devices to regulate pressure of liquid medium inside channel to built pressure which depends of pressure existing outside the structure. Convection cooling devices can be provided with system of heat-carrying conductors. EFFECT: improved efficiency of cooling. 16 cl, 2 dwg
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