Abstract
Abstract The way to increase the heat radiation shielding of thermal barriers by applying ytterbium oxide based reflective coating was considered. It is shown that not less than 75% of the power of thermal radiation, with the temperatures that are common for high-speed aircrafts radomes intracavities, occupies the spectral region of 1–7 μm. By this reason the design which is based on the suitable raw-material selection and coating microstructure adjustment was implemented to obtain the value of the coating hemispherical reflectivity of more than 0.6 over the whole foregoing spectral range. The reflective coating performance in comparison to the uncoated thermal barrier was estimated by numerical simulation.
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