Aircraft test anti-freezing device

Abstract

The invention discloses an aircraft test anti-freezing device, and belongs to the technical field of aircraft test. The device comprises a plurality of door leaf bodies, a track structure, a sealing structure and a first anti-freezing mechanism which form a laboratory door. The track structure comprises a bearing track, a plurality of walking wheels are installed at the lower end of each door leaf body, and the walking wheels are supported on the top of the bearing track in a rolling mode. The sealing structure comprises a plurality of sealing strips which are fixedly connected to the sides, close to the indoor space, of the lower end of the door leaf bodies, the sealing strips are arranged in an array mode in the vertical direction of the plane where the door leaf bodies is located, and each sealing strip is of a hollow inflatable structure. According to the device, the influence of the external environment on the experiment conditions in a laboratory can be reduced to be extremely small, sealing is tighter and more reliable through the multiple sealing strips, the freezing state of the sealing strips is reduced to be extremely small through the anti-freezing parts, freezing at the sealing strips can be rapidly and effectively melted through the anti-freezing mechanism, and the sealing structure is effectively prevented from being damaged when the door leaf are 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...

AI Technical Summary

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

Images