Influence of Weight Parameters on the Effective Range of Supercavitation Projectile

doi:10.12382/bgxb.2021.0319

Abstract

Abstract: To obtain the influence of weight parameters on the effective range of supercavitation projectile，a coupling numerical method of supercavitation flow and rigid body motion is established based on the VOF multiphase flow model and the space motion equations of rigid body. The proposed method is validated by the experimental data in literature Ref\[23\]. The underwater ballistic characteristics of supercavitation projectile were studied，and the influence of typical weight parameters，such as centroid position and mass，on the effective range of the projectile were obtained. The results show that the underwater trajectory of supercavitation projectile has a stable tail-slap phenomenon，and the wavelength and amplitude of tail-slap keep approximately constant. Increasing the distance of centroid position away from the cavitator can effectively increase the underwater range of supercavitation projectile. The range of supercavitation projectile is increased by 14% when the centroid distance is increased by 9%. The mass of supercavitation projectile can be increased to significantly increase the underwater range. The range of supercavitation projectile increases by 70% when its mass is increased by 150%.

Key words: supercavitationprojectile, weightparameters, effectiverange, ballisticcharacteristics

CLC Number:

TJ630

GU Jianxiao， DANG Jianjun， HUANG Chuang， LI Daijin， LIU Fuqiang. Influence of Weight Parameters on the Effective Range of Supercavitation Projectile[J]. Acta Armamentarii, 2022, 43(6): 1376-1386.

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