水陆两栖飞机典型横截面入水撞击实验研究

王明振; 褚林塘; 吴彬; 焦俊; 孙丰

doi:10.11883/1001-1455(2016)03-0313-06

水陆两栖飞机典型横截面入水撞击实验研究

doi: 10.11883/1001-1455(2016)03-0313-06

王明振^{1, 2,},
褚林塘^{2, 3},
吴彬^{1, 2},
焦俊^{1, 2},
孙丰^{1, 2}

1.
中国特种飞行器研究所，湖北荆门 448035
2.
高速水动力航空科技重点实验室，湖北荆门 448035
3.
中航通用飞机有限责任公司，广东珠海 519000

基金项目:

航空科学基金项目 20120191326091

中航工业科技创新基金项目 2013A60505R

详细信息

作者简介:
王明振(1984—)，男，硕士，高级工程师，wmznnn1983@126.com

中图分类号: O389;V219
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出版历程
- 收稿日期: 2014-10-21
- 修回日期: 2015-02-16
- 刊出日期: 2016-05-25

Experimental study on the water impact of a typicalcross section for amphibious seaplane

Wang Mingzhen^{1, 2
,},
Chu Lintang^{2, 3},
Wu Bin^{1, 2},
Jiao Jun^{1, 2},
Sun Feng^{1, 2}

1.
China Special Vehicle Research Institute, Jingmen 448035, Hubei, China
2.
Key Aviation Scientific and Technological Laboratory of High-Speed Hydrodynamic, Jingmen 448035, Hubei, China
3.
China Aviation Industry General Aircraft Co, Ltd, Zhuhai 519000, Guangdong, China

摘要

摘要: 选取当今世界几种水陆两栖飞机典型横截面为研究对象，通过进行不同投放高度和不同质量的楔形体入水冲击实验，动态测量楔形体入水冲击过程中的压力并记录自由液面变化情况，研究了不同实验件的自由液面变化、冲击压力随时间变化及局部压力分布规律等。通过对比分析，发现带舭弯的弧形横截面型式有利于降低水陆两栖飞机在复杂海况下的着水冲击载荷，可作为水陆两栖飞机设计的参考线型。
- 爆炸力学 /
- 入水 /
- 冲击 /
- 水陆两栖飞机 /
- 楔形体
Abstract: The effect of hydrodynamic impact on the amphibious seaplane is an important consideration in its structural designing and intensity checking. In addition, such impact is a major factor affecting its structural weight. By varying two parameters: drop height and drop weight in the experiment, the pressure and the change of the free surface of liquid for three different wedges are dynamically measured. In the present work, the local pressure distribution, the impact pressure changing with time and the variety of the free surface on several free-falling wedges have been investigated. These wedges have been chosen from the representative cross section of amphibious seaplanes commonly used worldwide. By comparing the experimental results, the conclusion is reached that the wedge with a flared cross section reduces the impact pressure effectively when the amphibious seaplanes land on intricate waves. This study is expected to offer valuable reference for the hull designing of the amphibious seaplane.
- mechanics of explosion /
- water-entry /
- impact /
- amphibious seaplane /
- wedge

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图 1 楔形体横截面对比

Figure 1. Cross-sectional difference of the three wedges

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图 2 实验件安装示意图

Figure 2. Diagram of the experimental set-up

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图 3 压力传感器布置图

Figure 3. Configuration of the pressure transducer

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图 4 楔形体浸水深度对比

Figure 4. Difference in immerged depths

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图 5 工况2下锲形体投放0.3 s后自由液面变化

Figure 5. The free surface variety for case 2 at 0.3 s

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图 6 喷溅高度和宽度对比

Figure 6. Spray height and width

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图 7 测压点2处的压力曲线

Figure 7. Pressure curve measured by the pressure transducer 2

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图 8 不同测压点压力峰值到达时间对比

Figure 8. Peak pressure time of all transducers

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图 9 楔形体质量不同时压力沿横向分布情况

Figure 9. Pressures for different wedge masses

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图 10 楔形体速度不同时压力沿横向分布情况

Figure 10. Pressure curves of wedges with different velocities

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图 11 压力沿横向分布对比

Figure 11. Pressure distribution of the three wedges

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表 1 实验参数

Table 1. Test parameters

工况	m/kg	h/mm
1	50	450
2	50	800
3	70	450
4	70	800

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表 2 压力传感器布置位置

Table 2. Configuration of the pressure transducer

传感器	d/mm
传感器	楔形体1	楔形体2	楔形体3
1	280	370	280
2	250	280	250
3	150	180	150
4	75	100	75
5	30	30	30
6	75	100	75
7	150	180	150

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表 3 3个楔形体峰值压力对比

Table 3. Peak pressures of the three wedges

传感器	p/kPa
传感器	楔形体1	楔形体2	楔形体3
1	28.06	30.81	247.36
2	22.60	29.02	210.79
3	21.34	27.74	176.58
4	20.67	26.80	135.11
5	20.18	26.70	82.11

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