HEAT-PIPE-COOLED THERMAL PROTECTION FOR THE LEADING EDGE OF THE WING

In view of the severe aerodynamic heating on the wing leading edge of the hypersonic vehicle, in order to ensure the sharp shape of the leading edge of the wing, a dredged thermal protection structure is proposed, and the built-in high-temperature heat pipe structure is used to provide the thermal protection for the leading edge of the wing. The numerical simulation and the arc wind tunnel test method are used to analyze the wing leading edge dredging structure, and to reveal the heat protection effect of the built-in high-temperature heat pipe at the leading edge of the wing. The numerical results show that under certain thermal conditions, the temperature on the leading edge of the wing decreases by 304K, and the minimum temperature on the tail increases by 130K. The heat flow from the high temperature zone to the low temperature zone is dredged, and the thermal load on the leading edge of the wing is weakened. The thermal protection for the leading edge of the wing is enhanced. The same result is obtained by the arc wind tunnel test. And the high temperature heat pipe can be adaptively started under certain flight conditions, which verifies the accuracy of the numerical simulation method and the feasibility of the built-in high temperature heat pipe dredging thermal protection structure at the leading edge of the wing.