Large aircraft temperature shock test device and test method

Abstract

The invention provides a large aircraft temperature shock testing device and testing method, and belongs to the technical field of aircraft testing. Comprising a climate laboratory large chamber used for simulating a low-temperature environment, an environment compartment arranged in the climate laboratory large chamber and used for simulating a high-temperature environment, a hydraulic lifting assembly arranged in the environment compartment, a low-temperature control assembly communicated with the climate laboratory large chamber and a high-temperature control assembly communicated with the environment compartment. The test airplane is converted between two environments in a vertical movement mode, temperature shock environment simulation is achieved, the high-temperature environment is simulated in the environment chamber so that test equipment can be protected, the advantages of energy conservation and emission reduction are achieved, the construction period is short, cost is low, and implementation is easy.

Description

technical field [0001] The invention belongs to the technical field of aircraft testing, in particular to a large aircraft temperature impact testing device and a testing method. Background technique [0002] The temperature shock test is a necessary test to verify the environmental adaptability of the equipment. It is used to assess whether the whole machine and parts of various products in the fields of aviation, machinery, electronics and electrical engineering suffer from physical damage or performance degradation when subjected to rapid changes in ambient atmospheric temperature. It is suitable for aircraft flight exposure, air transport-desert exposure, land transport or air transport-cold exposure and other scenarios. my country's national military standard GJB150.5A-2009 and national standard GB / T 2423.22-2002 all give typical temperature shock test methods. In order to simulate the temperature shock environment, two test chambers or one double-chamber test chamber ...

AI Technical Summary

Problems solved by technology

Each of the three forms has advantages and disadvantages and is suitable for different situations

The test box has two chambers on the left and right, and the conversion between high temperature and low temperature is realized by moving the moving basket left and right. Therefore, the test box requires not only the adaptability to the extreme high temperature environment, but also the extreme low temperature environment adaptability to the driving device of the moving basket, so that its The design is difficult and the failure rate is high

In addition, for the temperature shock test of ultra-large equipment, such as complete aircraft and large vehicles, there is currently no test equipment large enough to accommodate its size, and it is impossible to conduct temperature shock tests at the complete machine level. Only component-level tests are used for verification. Unable to conduct a comprehensive assessment, there are certain risks

[0003] At present, my country already has an aircraft climate laboratory. The environmental chamber of the laboratory is designed in a "convex" shape layout. The environmental chamber is divided into two environmental chambers through the isolation door. The effective size of the large chamber is 72m×60m×22m, and the small chamber The size is 27m × 30m × 22m, and the large and small rooms have independent air handling systems. The temperature range that can be achieved is -55°C~74°C. The laboratory does not yet have the ability to carry out temperature shock tests. Large-scale aircraft temperature shock test device for temperature shock test in aircraft climate laboratory

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