高速弹体水平入水产生冲击波特性
发布时间：2018-11-06 09:30
【摘要】：高速弹体入水产生的冲击波对弹体的水下运行与毁伤性能有着至关重要的作用.为得到高速弹体入水产生的冲击波及其传播特性,利用一级轻气炮高速发射平头和球形两种不同弹体水平入水,通过以不同方式分布于水下的压力传感器测量因此而形成冲击波峰值压力衰减特性.实验结果表明:初始冲击波峰值压力随着距离和角度以不同的方式衰减;在波的传播方向上,其满足指数衰减的形式,压力介于距离的倒数与距离平方的倒数之间的曲线之间.在球形波阵面上则以正弦曲线的形式衰减,这种沿距离和角度衰减的冲击波峰值不受弹体的初始速度的影响.
[Abstract]:The shock wave produced by high velocity projectile entering water plays an important role in the underwater operation and damage performance of the projectile. In order to obtain the shock wave and its propagation characteristics caused by the water entry of the high speed projectile, two different projectiles, the flat head and the spherical projectile, were fired at high speed by the first class light gas gun into the water horizontally. The peak pressure attenuation characteristic of shock wave is formed by measuring pressure sensors distributed underwater in different ways. The experimental results show that the peak pressure of initial shock wave attenuates in different ways with distance and angle, and in the direction of wave propagation, it satisfies the form of exponential attenuation, and the pressure is between the reciprocal of distance and the reciprocal of square of distance. On the surface of spherical wave array, the peak value of shock wave attenuation along the distance and angle is not affected by the initial velocity of the projectile.
【作者单位】： 哈尔滨工业大学航天学院;
【基金】：国家自然科学基金(11372088)
【分类号】：O35
[Abstract]:The shock wave produced by high velocity projectile entering water plays an important role in the underwater operation and damage performance of the projectile. In order to obtain the shock wave and its propagation characteristics caused by the water entry of the high speed projectile, two different projectiles, the flat head and the spherical projectile, were fired at high speed by the first class light gas gun into the water horizontally. The peak pressure attenuation characteristic of shock wave is formed by measuring pressure sensors distributed underwater in different ways. The experimental results show that the peak pressure of initial shock wave attenuates in different ways with distance and angle, and in the direction of wave propagation, it satisfies the form of exponential attenuation, and the pressure is between the reciprocal of distance and the reciprocal of square of distance. On the surface of spherical wave array, the peak value of shock wave attenuation along the distance and angle is not affected by the initial velocity of the projectile.
【作者单位】： 哈尔滨工业大学航天学院;
【基金】：国家自然科学基金(11372088)
【分类号】：O35
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