摘要
为探究带圆盘空化器的超空泡航行器倾斜入水过程冲击载荷特性,开展了20°入水角条件下的试验研究。超空泡航行器由空气炮加速获得入水初速度,采用内置惯性测量单元记录载荷变化,试验完成后提取数据进行分析;试验设定了典型入水工况,分析了航行器入水冲击过程轴向载荷的变化特性,进行了入水速度和空化器面积对入水冲击载荷影响的系列试验,分析了各参数下的冲击载荷特性。研究结果表明:航行器入水冲击载荷峰值时刻侵彻距离为空化器直径的1.89倍,阻力系数为稳定航行阶段的1.33倍;在所研究的范围内入水速度和空化器面积对阻力系数峰值无影响。
In order to investigate the impact load characteristics of a supercavitating vehicle with a disk cavitator during oblique water-entry, a series of experiments were carried out at the water-entry angle of 20° . An air cannon is set up to provide the initial velocity of supercavitating vehicle. An inertial measurement unit is embedded at the center of gravity of supercavitating vehicle to record the variation of axial impact load, and the data is extracted and analyzed after the experimental test. A typical research case is set up, and the impact load characteristics varying with time are obtained and described in detail. Subsequently, a series of experiments for different entry speeds and cavitator areas are carried out, and the effects of the influence factors on the impact load characteristics are analyzed. The investigation shows that, when the impact load reaches the peak, the penetration distance is 1.89 times of the diameter of cavitator as a reference dimension, and the resistance coefficient is 1.33 times of that in the steady stage. The resistance coefficient is shown to be independent of entry velocity and cavitator area over a wide range of test conditions.
作者
陈诚
袁绪龙
党建军
徐强
CHEN Cheng;YUAN Xu-long;DANG Jian-jun;XU Qiang(School of Marine Science and Technology,Northwestern Polytechnical University,Xi an 710072,Shaanxi,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2018年第6期1159-1164,共6页
Acta Armamentarii
基金
武器装备预先研究基金项目(9140A13050215HK03015)
关键词
超空泡航行器
圆盘空化器
入水试验
冲击载荷
supercavitating vehicle
disk cavitator
water entry experiment
impact load
