We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Launch Dynamic Simulation of a Compressed-Air Launcher for Fire Suppression.
- Authors
Jin, Yong; Gu, Yufei; Zhu, Hongjiang; Jiang, Chuan; Huang, Jin; Zhu, Jianping; Zhu, Yuejin
- Abstract
Featured Application: These research results can be applied in forest fire suppression. 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.
- Subjects
DYNAMIC simulation; GAS cylinders; FIREFIGHTING; LINEAR velocity; BALLISTICS; FOREST fires
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 17, p9615
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app13179615