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| Performance Changes of a Certain Type of Bullet after Long-term Storage under Three Typical Atmospheric Environments |
| Received:August 04, 2024 Revised:August 20, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.10.004 |
| KeyWord:bullet typical atmospheric environment long-term storage temperature dose form migration chamber pressure firing intensity |
| Author | Institution |
| HUANG Bo |
Southwest Institute of Technology and Engineering, Chongqing , China;Beijing Institute of Technology, Beijing , China |
| WU Qian |
Southwest Institute of Technology and Engineering, Chongqing , China |
| LIU Jing |
Southwest Institute of Technology and Engineering, Chongqing , China |
| ZHANG Kai |
Southwest Institute of Technology and Engineering, Chongqing , China |
| CHEN Yuan |
Southwest Institute of Technology and Engineering, Chongqing , China |
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| Abstract: |
| The work aims to clarify the performance characteristics of a certain type of bullets from China after long-term storage, and support the design and improvement of newly developed bullets and propellants, as well as the assessment and verification of long-term storage life criteria. Performance data such as appearance, chamber pressure, and shooting density of a certain type of bullets stored under three typical atmospheric conditions (hot humid marine climate, warm wetacid rain climate, and cold climate) for 13 years were collected. The performance changes of this type of bullets under different storage environments, as well as the differences in environmental impacts were analyzed. After 13 years of storage in warehouses with three typical atmospheric environments while in good packaging conditions, the length, full shape, weight, primer, and sealability of the bullets all met the requirements of acceptance specifications without significant change. However, for the bullets stored in tropical marine climate, the maximum chamber pressure exceeded the design index requirements. In conclusion,the main environmental factor affecting the long-term storage performance of bulletsis temperature.Indicators such as extraction force, maximum chamber pressure, and shooting density are strongly correlated with the storage environment temperature. The higher the temperature, the greater the extraction force, the larger the maximum chamber pressure value, and the lower the shooting density. |
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