Anti-freezing device for aircraft test

Abstract

The invention discloses an anti-freezing device for aircraft testing, which belongs to the technical field of aircraft testing, and comprises a plurality of door leaf bodies forming a laboratory gate, a track structure, a sealing structure, and a first anti-freezing mechanism; the track structure includes a bearing track, and the The lower end of the door leaf body is equipped with a plurality of traveling wheels, and the traveling wheels are rolled and supported on the top of the bearing track; the sealing structure includes a sealing strip fixedly connected to the indoor side of the lower end of the door leaf body, and the sealing strip is along the There are multiple arrays arranged in the vertical direction of the plane where the door leaf body is located, and the sealing strip is a hollow inflatable structure; this device can minimize the influence of the external environment on the internal experimental conditions of the laboratory, and the multiple sealing strips make the sealing It is more compact and reliable. The anti-freezing components minimize the freezing state of the sealing strip. The anti-freezing mechanism can quickly and effectively melt the ice on the sealing strip, effectively avoiding damage to the sealing structure when the door leaf is opened.

Description

technical field [0001] The invention relates to the technical field of aircraft testing, in particular to an anti-freezing device for aircraft testing. Background technique [0002] Aircraft test engineering is a practical method used to verify and assist design, appraise performance and test process quality in the process of aircraft development. It requires extensive application of various test technologies and equipment to carry out scientific experiments, mathematical and physical simulation tests and various engineering Test to verify whether the selected scheme and design parameters are correct, check the coordination, reliability and process quality of each subsystem, identify the performance of the aircraft and provide a basis for improving the aircraft. [0003] Aircraft testing projects are generally carried out in the aircraft climate environment laboratory, among which the aircraft climate environment laboratory needs to have the ability to carry out typical clim...

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Problems solved by technology

[0003] Aircraft testing projects are generally carried out in the aircraft climate environment laboratory, among which the aircraft climate environment laboratory needs to have the ability to carry out typical climate tests such as high temperature, low temperature, fog, snowfall, ice accumulation, freezing rain, wind blowing snow, etc. The test process In order to ensure that the ambient temperature in the laboratory meets the requirements of the variation range of -55℃~70℃, the laboratory needs to have good sealing performance, and the laboratory is in a slightly positive pressure state during the test, so it is necessary to prevent outdoor air from entering the laboratory The interior has an impact on the ambient temperature; the door of the laboratory has a large size, and the door of the laboratory has become the part where the temperature is most likely to leak. When the ambient temperature in the laboratory drops to 0°C~3°C and continues to cool down, the laboratory There is a large temperature difference between the inside and outside of the gate door, which will cause condensation and icing at the connection between the door body and the ground and the ground rail. After the low temperature test in the laboratory, although the indoor temperature returns to normal temperature, the Due to the thermal hysteresis of the ground temperature, the icing phenomenon still exists. When the door is opened, the icing part will damage the seal. If the damage is serious, the seal at the door leaf needs to be replaced as a whole, which increases maintenance costs and wastes time. Therefore, some It is necessary to design an anti-freezing device with a sealed structure

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