A Correction Method for Surface Temperature of Test Model

Abstract

The present invention is applicable to the technical field of wind tunnel test, and provides a method for correcting the surface temperature of a test model, comprising the following steps: obtaining the temperature value of each temperature measurement point, if the temperature factor of the temperature measurement point is not less than the preset parameter , the temperature measurement point is an invalid temperature measurement point; if the temperature factor of the temperature measurement point is less than the preset parameter, the temperature measurement point is an effective temperature measurement point; The degree of stability of the temperature value of the temperature measurement point: the temperature value of the reference temperature measurement point is used as the correction temperature of the failure temperature measurement point; the reference temperature measurement point is the relative distance from the failure temperature measurement point in the effective temperature measurement area For the same temperature measurement point, the relative distance is the distance between the temperature measurement point in the temperature measurement direction, the straight line where the temperature measurement direction is located, and the corner point of the leading edge line. The invention provides a method for correcting the surface temperature of a test model, which can accurately measure the surface temperature of an anti-icing component and improve the efficiency and accuracy of an anti-icing test.

Description

technical field [0001] The invention relates to the technical field of wind tunnel tests, in particular to a method for correcting the surface temperature of a test model. Background technique [0002] The icing of aircraft components will destroy the aerodynamic shape of the aircraft and lead to a decrease in aerodynamic characteristics, which is one of the more eye-catching hazards in flight safety accidents. The main purpose of the anti-icing verification test of aircraft components is to assess the anti-icing characteristics of components, which is currently mainly completed by icing wind tunnels. Among them, the hot air anti-icing mainly introduces the hot air generated by the aircraft engine into the anti-icing area, and the electric heating anti-icing mainly uses electricity to heat the anti-icing area of ​​​​the corresponding components, so that the surface temperature of the components can be kept or quickly reached above zero. Therefore, the change of the surface ...

AI Technical Summary

Problems solved by technology

[0005] 1. How to accurately measure the surface temperature of anti-icing components in the hot air and electric heating anti-icing tests in the icing wind tunnel in the prior art;

[0006] 2. In the hot air and electric heating anti-icing tests in the icing wind tunnel in the prior art, the anti-icing components are faced with extreme test environments, and extreme test environments often cause damage to the sensors, which in turn affects the accuracy of temperature distribution measurement and affects The process of anti-icing test reduces the test efficiency

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