压缩空气发射球形焰火弹仿真分析  

Simulation analysis of a spherical firework projectile launched by compressed air

作　　者：金涌 张祚炜 朱健平 JIN Yong;ZHANG Zuowei;ZHU Jianping(School of Petroleum and Natural Gas Engineering,Changzhou University,Changzhou 213164,China;Beijing North Vehicle Group Co.,Ltd.,Beijing 100072,China;Nanjing Junwei Innovation Precision Machinery Co.,Ltd.,Nanjing 211599,China)

机构地区：[1]常州大学石油与天然气工程学院,江苏常州213164 [2]北京北方车辆集团有限公司,北京100072 [3]南京骏威创新精工机械有限公司,江苏南京211599

出　　处：《常州大学学报（自然科学版）》2023年第4期70-76,共7页Journal of Changzhou University：Natural Science Edition

基　　金：常州大学自然科学基金资助项目(ZMF22020066)。

摘　　要：为改善传统焰火的燃烧随机性和提高发射稳定性,尝试利用压缩空气驱动焰火弹丸来代替传统的火药燃烧驱动发射过程。建立了压缩空气发射球形焰火弹丸的仿真模型和C++计算程序,模拟了高压气体驱动下球形弹丸在发射管内加速和在空气中自由飞行的过程。研究结果表明,建立的模型能够有效反映高压气体驱动球形弹丸的运动特征和规律,针对直径50 mm,质量105 g的球形焰火弹,可以采用50 mL初始体积,弹丸行程1 m的发射管,设置发射角度为65°,初始气体压力分别为2.65 MPa和3.85 MPa时,焰火弹丸可达150 m和200 m预定高度。研究结果可为压缩空气驱动球形焰火弹丸发射系统的研发提供有效的理论支撑。To improve the combustion randomness and enhance the launch stability of traditional fireworks,the compressed air was introduced to drive the firework projectile instead of the traditional gunpowder combustion process in this paper.A simulation model and C++program of the compressed air launching the spherical firework projectile were established to simulate both the acceleration process of the spherical projectile in the barrel and its free flight process in the air.Results showed that the simulation model can effectively reflect the motion characteristics and laws of the spherical projectile driven by the compressed air.For a spherical firework projectile with a diameter of 50 mm and a mass of 105 g,a barrel with an initial volume of 50 mL and a projectile trip of 1 m can be employed.This spherical firework projectile can reach the desired altitude of 150 m and 200 m,when the launching angle was set at 65°and the initial gas pressure is 2.65 MPa and 3.85 MPa respectively.The research results can provide effective theoretical support for the research and development of the spherical firework projectile launching system driven by compressed air.

关 键 词：压缩空气 球形焰火弹丸 等熵流动 弹道模拟 

分 类 号：TH411[机械工程—机械制造及自动化]