Comprehensive analysis method based on multiple thermal protection materials in one flight

Abstract

The invention discloses a one-time flight-based comprehensive analysis method for various thermal protection materials. The comprehensive analysis method is characterized by comprising the following steps: 1, installing an ultrahigh-temperature ceramic material in a first groove, installing a first C / SiC material in a second groove, installing an anti-oxidization carbon / carbon material in a third groove, and installing a second C / SiC material in a fourth groove; 2, arranging three temperature sensors spaced from geometric nose lines at different depths; 3, calculating to obtain a heat flow variation according to a pneumatic heat value, and comparing the heat flow variation with the heat flow variations of the geometric nose lines of the ultrahigh-temperature ceramic material, the first C / SiC material, the anti-oxidization carbon / carbon material and the second C / SiC material, thus obtaining the catalysis characteristics of the ultrahigh-temperature ceramic material, the first C / SiC material, the anti-oxidization carbon / carbon material and the second C / SiC material under a high ultrasonic speed condition in a near space. According to the one-time flight-based comprehensive analysis method, a support is provided for the heat-resistant design of noses of wings via identification of heat flow in a nose region according to acquired heat response data in combination with a change of a micro structure of a trial flight material.

Description

technical field [0001] The invention relates to the field of aircraft, in particular to a comprehensive analysis method based on a flight of multiple thermal protection materials. Background technique [0002] Hypersonic flight refers to the flight speed ≧ Mach 5. The payload and maximum range of a hypersonic vehicle are closely related to the design weight of the vehicle. The refined design of thermal environment and heat protection is of great significance to the weight optimization of a hypersonic vehicle. However, the difference in the thermal response of heat-resistant materials between the sky and the earth has a great influence on the thermal environment and the refinement of the heat-proof design. In view of the fact that the heat-resistant materials in the real service environment are under the same heat flow conditions, the thermal response mechanism of the sky and the earth is different. Comprehensive research and analysis work has not been reported at home and ab...

AI Technical Summary

Problems solved by technology

However, the difference in the thermal response of heat-resistant materials between the sky and the earth has a great influence on the thermal environment and the refinement of the heat-proof design. For the thermal response mechanism of various heat-resistant materials in the real service environment under the same heat flow conditions, the thermal response mechanism of the sky and the earth is different. Comprehensive research and analysis work has not been reported at home and abroad

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