Experimental Investigation into the Cavity and Ballistic Characteristics of Low-speed Oblique Water Entry of Revolution Body

doi:10.3969/j.issn.1000-1093.2018.07.014

Abstract

Abstract: The oblique water entry of revolution body is experimentally studied. Cavity evolution is discussed. The influences of head form on the water entry cavity, velocity, pitch angle and drag coefficient were experimentally obtained. The experimental results show that the diameter of water-entry cavity increases with the increase in the cone angle of the head, and the cavity formed by revolution body with elliptical head is smaller than that formed by revolution body with cone-shaped head. When the angle of cone-shaped head is larger, the attenuation rate of velocity of revolution body is larger. And the velocity of revolution body with elliptical head is always higher than that of revolution body with cone-shaped head. The pitch angle of elliptical revolution body changes greatly, along with an unstable trajectory. During the water entry of revolution bodies with different head forms, the kinematic parameters change non-linearily.Key

Key words: headformofrevolutionbody, cavity, lowspeedwater-entry, obliquewater-entry, ballisticcharacteristic

CLC Number:

TJ630.1

LU Li-rui, WEI Ying-jie, WANG Cong, SONG Wu-chao. Experimental Investigation into the Cavity and Ballistic Characteristics of Low-speed Oblique Water Entry of Revolution Body[J]. Acta Armamentarii, 2018, 39(7): 1364-1371.

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第39卷
第7期2018 年7月兵工学报ACTA
ARMAMENTARIIVol.39No.7Jul.2018

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