带尾裙跨介质航行体高速斜入水实验研究

刘喜燕; 袁绪龙; 罗凯; 祁晓斌; 鲁娜

doi:10.11883/bzycj-2022-0509

带尾裙跨介质航行体高速斜入水实验研究

doi: 10.11883/bzycj-2022-0509

刘喜燕^1,,
袁绪龙^1, ,,
罗凯¹,
祁晓斌^{1, 2},
鲁娜¹

1.
西北工业大学航海学院，陕西西安 710072
2.
西北机电工程研究所，陕西咸阳 712099

基金项目: 瞬态物理国家重点实验室基金（6142604190401）

详细信息

作者简介:
刘喜燕（1992－　），女，博士研究生，liuxiyan1992@mail.nwpu.edu.cn

通讯作者:
袁绪龙（1977－　），男，博士，副教授，yuanxulong@nwpu.edu.cn

中图分类号: O368; TJ630.1
计量
- 文章访问数: 325
- HTML全文浏览量: 52
- PDF下载量: 68
- 被引次数: 0
出版历程
- 收稿日期: 2022-11-14
- 修回日期: 2023-07-10
- 网络出版日期: 2023-07-21
- 刊出日期: 2023-11-17

Experimental study on high-velocity oblique water entry ofa trans-media vehicle with tail-skirt

LIU Xiyan^1
,,
YUAN Xulong^{1
, ,},
LUO Kai¹,
QI Xiaobin^{1, 2},
LU Na¹

1.
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China
2.
Northwest Institute of Mechanical and Electrical Engineering, Xianyang 712099, Shaanxi, China

Funds: ZHAO C G. Research on multiphase flow and trajectory characteristics of unsteady movement of high speed projectile [D]. Harbin, Heilongjiang, China: Harbin institute of technology, 2017: 95-99.

摘要

摘要: 为了研究带尾裙跨介质航行体高速斜入水过程中空泡的发展及运动特性，搭建了高速入水实验平台，并设计了带有内测单元的实验模型，对带尾裙跨介质航行体开展了入水角为20°、入水速度为30~130 m/s的实验研究。采用高速摄像机记录入水空泡，同时由内测单元测量航行体的运动参数和泡内压力，获得了航行体高速斜入水过程中空泡的发展特性、入水运动特性以及泡内压力的变化规律。实验结果表明：带尾裙跨介质航行体在入水过程中形成了滑行运动特性，入水空泡发生弯曲变形现象，随着入水速度的升高，入水弹道向上偏转的趋势更加明显；航行体入水轴向过载峰值作用时间较长，法向过载峰值在入水1.5倍航行体长度后逐渐降至零值附近波动；泡内压力随入水空泡的形成和发展呈现先降低后升高的趋势，且最低压力随入水速度呈线性趋势，形成时间基本一致。
- 跨介质航行体 /
- 入水空泡 /
- 空泡压力 /
- 冲击载荷 /
- 滑行运动特征
Abstract: To study the cavity development and motion characteristics of the trans-media vehicle with tail-skirt during the process of oblique water entry at high velocity, a high-speed water-entry experiment at platform was built, and an experimental model with inertial measurement unit system was designed. The experimental study was carried out on the trans-media vehicle model with tail-skirt when the water-entry angle was 20° and the water-entry velocity ranged from 30 m/s to 130 m/s. A high-velocity camera was used to record the cavity during water entry, and the inertial measurement unit was used to measure the motion parameters of the vehicle and the pressure inside the cavity. The cavity development characteristics, the motion characteristics and the changing law of the pressure inside the cavity during the high-velocity oblique water entry were obtained. The experimental results show that the planning motion characteristics was formed during the water-entry process of the trans-media vehicle with tail-skirt, and the bending deformation of the cavity occurred. With the increase of the water entry velocity, the upward deflection trend of the water-entry trajectory became more obvious. The peak axial load of the vehicle entering water lasted for a long interval, so load reduction should be considered in the process of crossing media. The peak normal load gradually dropped to about zero after entering the water 1.5 times the length of the vehicle. During the high-velocity water-entry process, the upper surface of the trans-media vehicle was always wrapped in the cavity. The pressure inside the cavity decreased first and then increased with the formation and development of the cavity. The minimum pressure changed linearly with the water entry velocity, while the formation time was basically the same.
- trans-media vehicle /
- water-entry cavity /
- pressure inside cavity /
- impact load /
- planning motion characteristics

HTML全文

图 1 实验系统

Figure 1. Experimental setup

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图 2 实验系统布置

Figure 2. Layout of experimental setup

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图 3 入水实验模型

Figure 3. Water-entry experimental model

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图 4 测量单元安装

Figure 4. Installation of measuring unit

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图 5 坐标系定义

Figure 5. Definition of the coordinate system

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图 6 高速摄像处理结果

Figure 6. High-speed camera processing result

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图 7 重复性实验的速度曲线对比

Figure 7. Comparison of velocity curves among threerepeatability experiments

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图 8 入水速度70 m/s时入水过程中测量单元重复性实验结果的对比

Figure 8. Comparison of repeatability experiment results at the measuring unit during the water-entry process of the vehicle with the water-entry velocity of 70 m/s

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图 9 跨介质航行体入水的空泡发展过程

Figure 9. Water-entry cavity development of the trans-media vehicle

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图 10 入水速度70 m/s入水过程的航行体过载特性和运动参数随时间的变化

Figure 10. Overload characteristics and motion parameters of vehicle varying with time during the water-entry process of the vehicle with the water-entry velocity of 70 m/s

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图 11 尾裙入水的受力分析

Figure 11. Schematic diagram of forces on the tail-skirt at the time of water-entry

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图 12 不同入水速度时的载荷特性曲线

Figure 12. Load characteristics curves at different water-entry velocities

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图 13 入水速度70 m/s入水过程中压力传感器P1和P2测得的压力曲线

Figure 13. Pressure curves obtained by the pressure gauges P1 and P2 during the water-entry process ofthe vehicle with the water-entry velocity of 70 m/s

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图 14 不同入水速度下压力传感器P1的压力特性

Figure 14. Pressure characteristics obtained by pressure gauge P1 at different water-entry velocities

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图 15 不同入水速度下的运动弹道参数

Figure 15. Motion trajectory parameters under different water-entry velocities

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图 16 不同入水速度的空泡特征

Figure 16. Cavity characteristics under different water-entry velocities

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表 1 不同入水速度时轴向和法向过载特性

Table 1. Characteristics of axial and normal overloads at different water-entry velocities

v₀/(m·s⁻¹)	轴向过载		法向过载
v₀/(m·s⁻¹)	A_x,max/g	Δt/ms	A_y,avg/g	s/L
30	12.0	13.0	3.5	1.491
50	13.3	11.0	6.5	1.492
70	30.4	9.8	8.2	1.496
90	38.6	8.2	8.3	1.495
110	56.8	7.4	12.5	1.497
130	73.8	5.9	17.8	1.505
注：根据文献[23]计算滑行周期内法向过载的均值。

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