Abstract: For any supersonic missile, one of the most difficult task is to protect the missile’s payload and internal components from the excessive heat generated during its flight due to the aerodynamic heating on missile surface. This can be done by applying a thermal barrier coating over missile surface. The performance of any supersonic missile coating can be judged by determining its erosion resistance and the amount of temperature reduction it can give in its substrate. Thus similar conditions were simulated on ground at Scramjet Test Facility in DRDL, Hyderabad. The coating was tested at extreme temperature condition for studying its performance. The shear stress acting at the plate centre was calculated to determine the erosion resistance of the coating. For determining the temperature performance, both bare plate as well as coated plate were tested at flight conditions. The temperature at their` bottom surfaces were measured by using three K type thermocouples. These temperature data were compared to determine the amount of temperature reduction given by thermal barrier coating. After conducting the tests, the thermal barrier coating was found to be efficient for the application on missile surface. This missile coating can protect missile’s payload and its internal component thereby increasing missile’s efficiency and life.
Keywords: Temperature, Thermal Barrier Coating, Flat Plate, DRDL, Supersonic Flow Conditions.