潜艇内部液舱对声目标强度的影响分析  

Analysis on the influence of submarine’s internal tank on the acoustic target strength

作　　者：严家祥[1] 邢军华[1] 张均平[1] Yan Jiaxiang;Xing Junhua;Zhang Junping(China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]中国舰船研究设计中心

出　　处：《中国舰船研究》2019年第6期73-80,共8页Chinese Journal of Ship Research

摘　　要：[目的]研究潜艇内部液舱对声目标强度控制的影响。[方法]采用基于Kirchhoff高频近似的板块元方法,计算并分析处于潜艇耐压壳体内部不同位置的液舱对目标强度的影响规律,研究4种液舱结构改进方案的目标强度控制效果。[结果]结果表明:内部液舱主要在1~3 kHz频段对目标强度有影响,其中处于舷侧中心线附近的内部液舱对目标强度影响不大,而处于舷侧底部的内部液舱则有较大影响;位于中心线附近的液舱内壁倾斜有利于降低正横目标强度,而位于底部的液舱内壁倾斜虽可大幅降低3 kHz以上频段的目标强度,但对1~3 kHz低频段目标强度的降低效果仍无法抵消存在内部液舱带来的影响。[结论]在潜艇设计中,需对内部液舱采取相应措施,减小其对目标强度的影响。[Objectives]The influence of submarine's internal tank on the acoustic target strength control is studied.[Methods]The planar element method based on Kirchhoff high frequency approximation was used to calculate and analyze the influence of internal tanks at different positions inside the submarine's pressure hull on the target strength,a nd their control effects of four tank structure improvement schemes were calculated and analyzed.[Results]The results show that the internal tank mainly affects the target strength in the frequency band from 1 kHz to 3 kHz.The internal tank located near the centerline of the broadside has little effect on the original target strength,w hile the tank at the bottom of the broadside has a great impact on the original target strength.The calculated results show that the inclination of the interior wall of the tank located near the centerline can help reduce the target strength in the normal incidence direction.However,the inclination of the interior wall of the tank located at the bottom can significantly reduce the target strength in the frequency band above 3 kHz,b ut the reduction effect on that in the low frequency band between 1 kHz and 3 kHz is not enough to make up for the influence caused by the internal tank.[Conclusions]In the design of submarine,c orresponding measures should be taken to reduce the influence of the internal tank on the target strength.

关 键 词：潜艇设计 目标强度 内部液舱 板块元法 

分 类 号：U674.76[交通运输工程—船舶及航道工程]