斜截体头型弹丸低速垂直入水实验研究  

Experimental Study of the Low-speed Vertical Water Entry Process of Oblique Head Projectile

作　　者：唐楚淳 黄振贵[1] 陈志华[1] 罗驭川 郭则庆[1] TANG Chuchun;HUANG Zhengui;CHEN Zhihua;LUO Yuchuan;GUO Zeqing(National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;Aerospace Power Measurement and Control Technology Research Institute,Xi'an 710025,Shaanxi,China)

机构地区：[1]南京理工大学瞬态物理国家重点实验室,江苏南京210094 [2]航天动力测控技术研究所,陕西西安710025

出　　处：《兵工学报》2020年第S01期54-58,共5页Acta Armamentarii

基　　金：装备预先研究重点实验室基金项目(614260403041803);中央高校基本科研业务费专项项目(309190112A2、30917012101)。

摘　　要：为分析非轴对称头型弹体的入水弹道特性开展了弹丸低速垂直入水实验研究。基于高速摄像方法进行不同斜截体头型弹丸低速垂直入水对比实验,得到斜截体头型弹丸斜切角大小对入水空泡、运动速度、俯仰角的影响规律。结果表明:斜切角较小的斜截体弹头可能无法在入水时产生裹体空泡,也没有尾部撞击空泡壁面的现象;尾部撞击空泡壁面的入水时间与入水速度无关;斜切角越大,弹体倾斜得越明显,入水速度衰减得越快;5°斜切角的弹体俯仰角变化程度最小,也相对最为稳定。In order to study the water entry ballistic characteristics of non-axisymmetric head-type projec-tiles,the effect of chamfered angle size on the cavitation and ballistic characteristics of water entry under the condition of low speed vertical water entry was investigated based on the high-speed photography,and the different oblique contrast experiments of low-velocity head-type projectiles in the process of low-speed vertical water entry were made to obtain the influence of oblique angle on cavitation,velocity and pitch angle of projectile with the head of slope-intercept body.The experimental results show that the slant body warhead with small chamfered angle may not be able to produce the envelope-cavitation when ente-ring water,and there is no tail hitting on the cavitation wall either;the water-entry time of the tail hitting on the cavitation wall is independent of the inlet velocity;the greater the oblique angle is,the more the projectile body is inclined obviously.The variation of pitch angle of projectile body at 5°chamfered angle is the least and relatively the most stable;the larger the chamfered angle is,the faster the water-entry ve-locity decays.

关 键 词：斜截体头型弹丸 低速垂直入水 斜切角 空泡 俯仰角 

分 类 号：TJ012.36[兵器科学与技术—兵器发射理论与技术]