Launch Dynamic Simulation of a Compressed-Air Launcher for Fire Suppression

被引:1
|
作者
Jin, Yong [1 ]
Gu, Yufei [1 ]
Zhu, Hongjiang [1 ]
Jiang, Chuan [1 ]
Huang, Jin [2 ]
Zhu, Jianping [3 ]
Zhu, Yuejin [4 ]
机构
[1] Changzhou Univ, Sch Petr & Nat Gas Engn, Sch Energy, Changzhou 213164, Jiangsu, Peoples R China
[2] Suqian Fire & Rescue Brigade, Suqian 223800, Peoples R China
[3] Nanjing Junwei Innovat Precis Machinery Co Ltd, Nanjing 211599, Peoples R China
[4] Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Jiangsu, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 17期
关键词
compressed air; launch dynamic; fire suppression; interior ballistics;
D O I
10.3390/app13179615
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This paper focuses on improving fire suppression performance through the use of compressed-air launching technology. A launch dynamics calculation model of a compressed-air launcher is presented, developed using VC++ programming, to simulate the acceleration process of a fire-extinguishing bomb in a barrel. By analyzing the influences of various structural and initial parameters on interior ballistics variations, the effectiveness of the calculation model and program in accurately simulating the launching process is demonstrated. The calculation results indicate that the bore pressure follows a similar trend to that of traditional gunpowder launching. Additionally, it is found that specific structural parameters, such as nozzle diameter and gas cylinder volume, have a direct impact on interior ballistics variations. Notably, the nozzle diameter positively affects the peak pressure, muzzle velocity, gas transfer efficiency, and launch efficiency. To ensure an optimal launch effect and efficiency, the nozzle diameter should be selected to be more than half of the launcher caliber. Similarly, the gas cylinder volume positively influences the peak pressure and muzzle velocity while negatively affecting the gas transfer efficiency and launch efficiency. Furthermore, the initial pressure in the gas cylinder exhibits a positive linear relationship with both the peak pressure and muzzle velocity but a negative linear relationship with the gas transfer efficiency and launch efficiency. The loading position minimally impacts the peak pressure and muzzle velocity but slightly enhances the gas transfer efficiency and launch efficiency. Finally, it is observed that launch angles do not affect the interior ballistic process. The research findings provide valuable theoretical guidance for determining the working parameters of compressed-air accelerated fire-extinguishing bombs.
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页数:13
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