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| Influence of Temperature-Humidity-Altitude Environment on the Performance of Aerospace Explosive Devices |
| Received:October 25, 2021 Revised:January 25, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.02.002 |
| KeyWord:aerospace explosive devices temperature- humidity-altitude seal failure explosive material damp storage life seal improvement |
| Author | Institution |
| TANG Ke |
Beijing Institute of Astronautical Systems Engineering, Beijing , China |
| WANG Rui-qiong |
Beijing Institute of Astronautical Systems Engineering, Beijing , China |
| QU Zhan-long |
Beijing Institute of Astronautical Systems Engineering, Beijing , China |
| CHEN Kai |
Beijing Institute of Astronautical Systems Engineering, Beijing , China |
| ZHAO Yu-hui |
Beijing Institute of Astronautical Systems Engineering, Beijing , China |
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| Abstract: |
| The sealing failures in the temperature- humidity-altitude environment has occurred in explosive devices. Therefore, this paper studied the mechanism of temperature-humidity-altitude environment on the sealing performance of aerospace explosive devices. The origin of temperature-humidity-altitude environment was investigated, the differences of test methods in different standards were compared, and the failure causes and mechanisms of two cases of explosive device failure caused by temperature-humidity-altitude environment were analyzed. Due to the process of mutual transformation between low temperature & low pressure and high temperature & high humidity for many times, the condensate water on the surface was “pressed” into the interior of device because of the “negative pressure” characteristic, forming the accumulated water. After multiple cycles, the internal accumulated water became more serious. The fault case shows that the temperature- humidity-altitude environment, which tends to cause the sealing failure of the device, and in turn causes the operational failure. Therefore, it is necessary to take effective sealing measures for aerospace explosive devices and conduct temperature-humidity-height assessment according to the standard requirements to test the sealing performance of the devices and ensure the storage life of the devices. |
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