摘要
利用数字式高速录像机实验研究了头部为半球形的弹头与手枪普通制式弹头在两个水深、6种速度下水平入水时的空泡及弹道特征。实验结果表明,弹头形状对弹头空泡与入水弹道的稳定性有着重要影响。半球形弹头表现出较好的弹道稳定性,而普通制式弹头的弹道不稳定,呈现出特有的藕节形空泡。在一定的速度范围内,弹头入水的速度衰减规律具有一定的相似性,表现出极强的速度衰减特性。建立了弹头水中速度衰减规律的数学预报模型,并与实验结果进行了比较,理论与实验结果符合得较好。
The hydro-ballistic trajectory and cavity of the half sphere bullet and general pistol bullet are experimentally researched by a high speed digital video recorder when they entrain water at six speeds and at two depths of water.The experimental results show that the shape of a bullet has important influence upon the hydro-ballistics stability of the bullet motion.The hydro-ballistics of the half sphere bullet is stability,but the stability is not well for pistol bullet.The shape of pistol bullet cavity is ＂lotus root＂.The velocity attenuation law of the bullet have similarity at a range of bullet entraining water speeds.The velocity attenuation law in water has similarity for both of the half sphere and pistol bullet.The speed of bullet in water decreases very quickly.A calculation model is established to predict the velocity attenuation law of the bullet.The calculation results are compared with the experimental results,they agree well with each other.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2012年第5期540-544,共5页
Acta Armamentarii
基金
国防科技引信动态特性重点实验室基金项目(00JS34.1.1.JB1101)
关键词
应用力学
入水
水弹道学
空泡
实验研究
弹头
applied mechanics
water-entry
hydro-ballistics
cavity
experimental research
bullet
