Water cooling type sample bracket for high enthalpy airflow

Abstract

The invention relates to a water cooling type sample bracket for a high enthalpy airflow. The water cooling type sample bracket for the high enthalpy airflow comprises a shell, a first closed part, asecond closed part, a support part and a bottom plate; the shell comprises an outer shell and an inner shell; the outer shell is provided with a first water inlet and a first water outlet; a hollow interlayer is between the outer shell and the inner shell; two ends of the hollow interlayer are closed; the hollow interlayer comprises a front area, a middle area and a rear area; the middle area is separated into an upper cavity and a lower cavity by two first stop parts arranged along the length direction of the shell; the front area forms an annular water cavity, and is communicated with the front ends of the upper cavity and the lower cavity; the rear end of the upper cavity is communicated with the rear area; and a sealing part is arranged between the rear end of the lower cavity and therear area, and used for sealing. The water cooling type sample bracket can be used for supporting a thermal protective material, so that ultra-long-time (greater than or equal to 2500 s) oxidation ablation behaviour research can be smoothly completed; and thus, the use performance test requirement of the thermal protective material of a hypersonic vehicle can be satisfied.

Description

technical field [0001] The invention relates to the technical field of ground heat protection tests, in particular to a water-cooled sample holder used in high-enthalpy airflow. Background technique [0002] The development of hypersonic vehicles is a long-term strategic goal in the future of my country's aerospace field. It is subjected to severe aerodynamic heating in the harsh service environment, and the high heat flux and high temperature generated seriously threaten the safety of aircraft and personnel. To evaluate and identify the anti-heat and heat-insulation performance of the thermal protection system, a large number of ground simulation tests need to be carried out in high-enthalpy equipment capable of simulating the flight aerodynamic thermal environment. Most of these tests are carried out on combustion heating equipment, arc heating equipment and high-frequency plasma heating equipment. The bracket is used to support the heat-resistant material, which can succ...

AI Technical Summary

Problems solved by technology

If a conventional sample bracket is used to support the heat-resistant material for assessment, due to the unreasonable structural design of the conventional sample bracket, the high enthalpy and high temperature airflow will burn the sample bracket, making the ultra-long-term oxidation ablation test Forced to stop

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