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

被引：0

作者：

Tang C. ^{[1
]}

Huang Z. ^{[1
]}

Chen Z. ^{[1
]}

Luo Y. ^{[1
,2
]}

Guo Z. ^{[1
]}

机构：

[1] National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu

[2] Aerospace Power Measurement and Control Technology Research Institute, Xi'an, 710025, Shaanxi

来源：

Binggong Xuebao/Acta Armamentarii | 2020年 / 41卷

关键词：

Cavitation; Chamfered angle; Low speed vertical water entry; Oblique head projectile; Pitch angle;

D O I：

10.3969/j.issn.1000-1093.2020.S1.008

中图分类号：

学科分类号：

摘要：

In order to study the water entry ballistic characteristics of non-axisymmetric head-type projectiles, 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 entering 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 velocity decays. © 2020, Editorial Board of Acta Armamentarii. All right reserved.

引用

页码：54 / 58

页数：4

共 11 条

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