Heat Insulation by “Temperature Swing” in Combustion Chamber Walls

- The Investigation of the Appropriate Thermo-physical Properties for Heat Insulation Coat -

Abstract

The aim of this work is to investigate the possibility of heat insulation by “Temperature Swing”, that is temperature fluctuation, in combustion chamber walls coated with low-heat-conductivity and low-heat-capacity materials. Based on our calculations, it is clarified that both the prevention of intake air heating and the low heat rejection are successfully possible with the material of appropriate thermo-physical properties. In our preliminary test-piece experiment, it is demonstrated that the surface temperature of the coat with the above-mentioned structure immediately follows the transient gas temperature.