Environmental parameters mainly include ambient temperature, humidity, sudden temperature changes, atmospheric pressure, and corrosive environment. The environment in which the aerospace connector is in use, storage, and transportation has a significant impact on its performance, so the corresponding aviation connector must be selected according to the actual environmental conditions.
The metal material and the insulating material of the aerospace connector determine the working environment temperature of the connector. High temperature will destroy the raw materials, causing the insulation resistance and voltage resistance to decrease; for metals, high temperature can make the contact object lose its elasticity, accelerate oxidation and cause the deterioration of the coating. The usual ambient temperature is -55~100℃, which may be even higher in special occasions.
Relative humidity greater than 80% is the main cause of electrical breakdown. The humid environment causes the absorption and diffusion of water vapor on the surface of the insulator, which easily reduces the insulation resistance below MΩ. Long-term exposure to high humidity will cause physical deformation, decomposition, and overflow of the product, resulting in respiratory effects, electrolysis, corrosion, and crack.
Especially for aerospace connectors outside the equipment, environmental conditions such as humidity, water seepage and pollution are often considered. In this case, sealed connectors should be selected. For water-tight and dust-tight connectors, GB4208 shell protection grade is generally used to indicate.
Humidity sudden change test is to simulate the actual use of aerospace connector equipment in a cold environment to a warm environment, or to simulate a sudden change in the ambient temperature of a spacecraft or detector. Sudden changes in temperature may cause cracks or delamination of insulating materials.
At high altitudes where the air is thin, the plastic emits gas to contaminate the contact object, and the corona tends to increase, the voltage resistance performance decreases, and the circuit produces a short circuit fault. When the altitude reaches a certain value, the performance of the plastic deteriorates. Therefore, when using non-sealed aerospace connectors at high altitude, they must be derated.
Sunkye is unique, able to provide turnkey customized solutions and military specification military connector manufacturers for a variety of high-performance applications. Our industry-leading material knowledge, engineering design experience and testing capabilities are the keys to achieving reliable service in the most extreme environments.
You will find a large number of popular military specifications military connectors, such as MIL-DTL-83513 miniature connector, MIL-DTL-38999 iii connector, MIL-DTL-32139 nanometer connector, MIL-DTL-26482 automotive connector, Arinc Connectors, etc., can be used for standard or custom-configured mil connectors. If you have any needs, please consult.
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