高速标准破片速度衰减规律试验研究
Experimental study on the attenuation law of high-speed standard fragments velocity
胡杰 1陈桦 2冯志威 3马营 3贾琪3
作者信息
- 1. 西安工业大学机电工程学院,西安 710021;中国兵器工业试验测试研究院,陕西华阴 714200
- 2. 西安工业大学机电工程学院,西安 710021
- 3. 中国兵器工业试验测试研究院,陕西华阴 714200
- 折叠
摘要
为研究符合北约STANAG 4496 标准的高速破片在空气中运动的规律,设计了一种使用30 mm弹道炮发射的破片弹,并用多组区截测速装置获得标准破片在1 400～2 200 m/s速度范围内的运动数据.在此基础上,采用数值仿真和理论分析2 种方式对破片在空气中运动的速度衰减规律进行了研究,利用CFX软件模拟破片在空气中运动的受力情况来推导破片运动速度,仿真与实测速度的最大误差为2.71%;结合破片运动方程建立了速度衰减模型,推导出破片运动过程中迎风面积的极值,结果表明:破片衰减系数k为0.008 899;破片空气阻力系数cx 取值范围为[0.993 04,1.617 21],并通过试验验证了速度衰减模型.
Abstract
In order to study the law of the movement of high-speed fragmentation in the air in accordance with NATO STANAG 4496,a fragmentation projectile launched by a 30 mm ballistic gun is designed,and the motion data of standard fragmentation in the speed range of 1 400～2 200 m/s is obtained by using a multi-group area interception speed measuring device.On this basis,the speed attenuation law of fragmentation in air is studied by numerical simulation and theoretical derivation,and the force of fragmentation in air movement is derived by CFX software to simulate the movement of fragments in air,and the maximum error between simulation and measured speed is 2.71%.Combined with the fragmentation motion equation,the velocity attenuation model is established,and the extreme value of the windward area during the fragmentation motion is derived,and the results show that the fragmentation attenuation coefficient k is 0.008 899,and the fragmentation air resistance coefficient cxis in the range of[0.993 04,1.617 21],and the velocity attenuation model is verified by experiments.
关键词
高速破片/衰减规律/试验/STANAG/4496/空气阻力Key words
high-speed fragmentation/law of attenuation/test/STANAG 4496/air resistance引用本文复制引用
基金项目
中国兵器工业试验测试研究院基金(ZN-202003)
出版年
2024
NETL
NSTL
万方数据