Hot air supply rapid adjusting system for icing wind tunnel and air supply method

Abstract

The invention is suitable for the technical field of wind tunnel tests, and provides a hot air supply rapid adjusting system for an icing wind tunnel and an air supply method, and the air supply method of the hot air supply rapid adjusting system for the icing wind tunnel comprises the following steps: initializing the hot air supply rapid adjusting system for the icing wind tunnel; enabling the flow of the simulation branch to be stabilized at a first flow value, wherein the first flow value is greater than the flow value required by the test; enabling the temperature of the simulation branch to be stabilized at a first temperature value, wherein the first temperature value is greater than the temperature value required by the test; enabling the flow of a real branch to be stabilized at a flow value required by the test; and stabilizing the temperature of the real branch at the temperature value required by the test. Compared with the prior art, the temperature stabilization time of the inlet of the model is shortened, sudden temperature drop is prevented, large flow change is avoided, and the test efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel tests, and in particular relates to a hot air supply rapid adjustment system and an air supply method for icing wind tunnels. Background technique [0002] As stated in the patent CN111929025B that the applicant has authorized, when the aircraft is flying in the high-altitude clouds, the windward parts will freeze when the supercooled water droplets in the clouds collide, resulting in a significant decline in the flight performance of the aircraft, damage to the components, and even crashes. flight accidents. In order to ensure flight safety, anti-icing devices are required to be installed on aircraft wings, engine lips and other components. Hot gas anti-icing is one of the most commonly used anti-icing methods. The hot air from the engine compressor flows into the anti-icing cavity through the bleed air pipe. , to transfer heat to the anti-icing surface to achieve the purpose of anti-icing. ...

AI Technical Summary

Problems solved by technology

[0007] 3. When the real branch is opened, the simulated branch needs to be closed, which will cause a large flow change;

[0008] 4. For the test times that require multiple temperature adjustments, the existing hot gas supply system has to switch to the simulation branch again to repeat the test process, which has the problems of complicated test process and low test efficiency;

[0009] In summary, the existing hot air supply system for anti-icing tests has technical problems such as slow stabilization time at the model inlet temperature, sudden temperature drop, large flow rate changes, and low test efficiency.

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