Miniature water card heat-flow meter

Abstract

The invention discloses a miniature water card heat-flow meter. According to the technical scheme, water parts are designed integrally, a water inlet pipe directly leads water into a heat metering part, cooling is conducted through the generation of shock, heat transfer is intensified, the axle diameter of the heat metering part is as small as possible, the fit clearance of the water inlet pipe and the axial wall of the heat metering part is as small as possible, and under the condition that the water inlet flow value is as small as possible, heat flow which can be reduced on the surface of the axial wall of the heat metering part is very large. The miniature water card heat-flow meter is a wide-range heat-flow meter which is applicable to aerospace craft thermal protection ground-based simulation tests, can be installed for use in a narrow space, and thus the actual using demand is effectively satisfied.

Description

technical field [0001] The invention relates to a miniature water card heat flow meter, in particular to a large-range heat flow meter used in the thermal protection ground simulation test of aerospace vehicles, and can be installed and used in a narrow space. Background technique [0002] Modern returnable aircraft have many moving parts and complex structures, and face complex aerodynamic and thermal environments when returning to the atmosphere. The thermal environment faced by the air rudder is particularly severe due to the small radius of the leading edge. It is predicted that the peak heat flux density can reach 20MW / m 2 , It needs to be measured on the ground. Due to its large size, conventional sensors cannot be installed at the leading edge of the narrow air rudder. The miniaturized large-range heat flow sensor for complex shapes has become an urgent need for domestic model development. [0003] When a spacecraft conducts aerodynamic thermal protection tests, the h...

AI Technical Summary

Problems solved by technology

[0002] Modern returnable aircraft have many moving parts and complex structures, and face complex aerodynamic and thermal environments when returning to the atmosphere. The thermal environment faced by the air rudder is particularly severe due to the small radius of the leading edge. It is predicted that the peak heat flux density can reach 20MW / m 2 , needs to be measured on the ground. Due to the large size, conventional sensors cannot be installed at the leading edge of the narrow air rudder. The miniaturized large-range heat flow sensor for complex shapes has become an urgent need for domestic model development.

[0003] When a spacecraft conducts aerodynamic thermal protection tests, the heat flux density of the cold wall on its surface is one of the important parameters that need to be simulated. This parameter is mainly measured by the heat flux sensor. The sensor has become an urgent need for domestic model development. Currently, the commonly used plug heat flow meter is small in size but has a limited range. The commonly used water card heat flow meter has a large range but a large volume. Therefore, it is urgent to design a heat flow sensor with a small installation volume and a large range.

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