【摘要】 拖曳线列阵在现代海军反潜、海洋油气资源勘探中得到越来越广泛的应用。由于液体填充的拖曳线列阵机械强度低,抗蠕变性能差,使用过程中发生污染海洋环境的风险大,于是越来越多的国家开始研究固体填充的拖曳线列阵。固体拖曳线列阵具有更高的机械强度,良好的抗蠕变性能,可以在线阵全寿命期内保持圆截面特性,可靠性高,并具有抑制线阵中呼吸波和膨胀波的固有优势。介绍了固体拖曳线列阵流噪声特性试验方法和试验结果,并对试验结果及其原因进行分析。试验结果表明,频率f>40 Hz时固体线列阵的流噪声低于液体线列阵;对于串在一起拖曳的两种声学段其流噪声与前后顺序无关。更多还原

【Abstract】 Active and passive towed array sonar has the advantages of depth variable,low operating frequency and large aperture etc.As an effective means for quite-submarine detection,it has been widely used around world.Towed body is the device where low frequency active transmitting sources is installed,it’s towing stability not only affects sonar performance,but the safety of the towed array sonar itself as well.If the movement of towed body is not stable underwater,it would move vigorously form side-to-side or up-and-down,hydrodynamic force acting on the towed body would change greatly and lots of bubbles formed near the body.This paper analyzes the two main aspects that influence the towing stability,one is static attitude and restoring moment when towed body is suspended stationary,another is hydrodynamics static stability when body is towed,and the method to obtain the center of hydrodynamics.更多还原