A low oxygen, high temperature and vibration comprehensive environmental test system

Abstract

The invention discloses a low-oxygen, high-temperature and vibration comprehensive environmental test system, which comprises a sealed test cabin and a vibration table; , with heat shields distributed horizontally; test objects are set on the top of the heat shields; radiant heaters are set directly above the test objects; radiant heaters are used to heat the test objects at high temperatures; The heater is located in the inner cavity of the test chamber; the inner wall of the test chamber is provided with an oxygen concentration sensor and a first temperature sensor; the body of the test chamber is provided with a nitrogen interface and a compressed air interface; the nitrogen interface is connected with the gas outlet of the nitrogen source; the compressed air The interface is connected with the compressed air source. The invention can provide the required low-oxygen, high-temperature and vibration environment for the test object during the compound environment test process, thereby facilitating the realization of the high-temperature and vibration comprehensive test function in the low-oxygen environment.

Description

technical field [0001] The invention relates to the technical field of composite environmental tests, in particular to a low-oxygen, high-temperature and vibration comprehensive environmental test system, which is used to provide test objects with required low-oxygen, high-temperature and vibration test environments during the composite environmental test process. Background technique [0002] In recent years, with the development of a new generation of aircraft, the structure of the aircraft will be affected by the combined effects of vibration, shock, high temperature and other composite environments during the flight stage in a high-altitude low-oxygen environment. In severe cases, it may cause structural damage, deformation, or performance degradation of the aircraft , to fail the flight. [0003] In order to obtain the thermal protection and dynamic characteristics of the aircraft structure, it is necessary to carry out comprehensive environmental test verification on t...

AI Technical Summary

Problems solved by technology

[0004] However, for the current test system, the maximum test temperature that can be simulated for the aircraft structure and other test objects is only 200°C, which cannot meet the high-temperature aerodynamic thermal simulation test requirements of 500°C~1200°C for the aircraft structure as the test object. , and the test environment is mostly a natural environment, which cannot provide a high-altitude low-oxygen environment

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