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| Research on the Test Method of Coupled High Temperature and High Humidity Environment of the Outer Surface Connector of Air Vehicle |
| Received:July 18, 2021 Revised:August 19, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.10.002 |
| KeyWord:electrical connector high temperature and humidity coupling environment effective simulation reliability assessment |
| Author | Institution |
| XIA Lin-shi |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| XU Ying |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| NA Wei |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| SHI Bao-li |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| WANG Shuang-quan |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| SUN Bo |
Beijing Institute of Space Long March Vehicle, Beijing , China |
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| Abstract: |
| This paper aims to more truly simulate the flight environment under ground conditions with high humidity conditions such as rain, snow and fog on the outer surface of the bullet and arrow electrical connectors. using numerical analysis methods, by comprehensively comparing the calculation results of the outer flow field shape of different outlet sizes under the same nozzle structure and the nozzle outlet flow rate under different pressure differences, obtained the required nozzle size, pressure and relative position. After predicting the effect of the spraying scheme through modeling, the supporting test system was established and a high temperature and high humidity coupled environmental effective simulation test was conducted under the heat radiation environment of a quartz lamp heater. The heating conditions in the test can meet the requirements of surface temperature and total heating during flight, water vapor environment simulation reaches 1.82 mm/min. After the test, the resistance value test, the thickness measurement of the carbonization layer of the profile and the analysis of the pyrolysis products were conducted, and the electrical characteristics were good. The test method can effectively simulate the high temperature and high humidity flight environment at the same time, and can effectively evaluate the flight reliability of connectors under high humidity conditions such as rain, snow and fog. |
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