EXPERIMENTAL STUDY ON THE CHARACTERISTICS OF BULLET WATER-ENTRY SUPERCAVITY IN DRAG-REDUCER SOLUTION
EXPERIMENTAL STUDY ON THE CHARACTERISTICS OF BULLET WATER-ENTRY SUPERCAVITY IN DRAG-REDUCER SOLUTION
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DOI：
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发表时间：
2010
影响因子：
2.4
通讯作者：
Lili Feng
中科院分区：
文献类型：
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作者：
Lili Feng
利用高速弹丸投射方法对入水超空泡的形态特征进行了实验研究。用气动打钉枪将弹丸垂直投射到质量分数分别为1×10-4、5×10-4和1×10-3的水和十六烷基三甲基氯化铵(CTAC)水溶液中，用高速摄像机记录子弹的运动轨迹，观察弹丸周围的超空泡形态。实验结果表明，在CTAC水溶液中的超空泡尺寸大于在水中的超空泡尺寸，并且超空泡的维持时间比在水中长表明子弹在CTAC水溶液中的阻力小于在水中的阻力。
The configurational characteristics of water-entry supercavities were experimentally studied through high-speed bullets projecting approach.The bullets were projected perpendicularly into water and cetyltrimethyl ammonium chloride(CTAC) aqueous solution with mass fractions of 1×10~(-4), 5×10~(-4) and 1×10~(-3),respectively,using a pneumatic nail gun.The trajectories of the bullets were recorded by a high-speed CCD camera in order to observe the supercavities configuration around the bullets.The experimental results showed that the size of supercavities in CTAC aqueous solutions are larger than that in water and maintaining time of supercavity is longer than that in water as well,indicating that the resistance of the bullets travelling in CTAC aqueous solutions is less than that in water.