主动式声纳列阵拖曳系统姿态数值计算

主动式声纳列阵拖曳系统是用于探测潜艇的新型声纳系统，为了准确探测潜艇的位置，必须首先预报声纳列阵的瓷态，本文通过对其三维力学模型的分析，得到该系统的运动微分方程，其中缆索的力学方程是基于Ablow和Milinazzo的模型，而对于拖体则运用六自由度空间运动方程模拟，结合边界条件，用有限差分法求解，通过对拖船的不同运动状态如匀速，变速和回转的计算，证明本文的方法对于预报声纳列阵的姿态是有效的。

Numerical computation of the motion of an underwater towed sonar array system

In this paper,a numerical method for dynamic simulation of an underwater towed system is studied. The system consists of a towed cable,a towed body,a sonar array and a rope drogue.The equations of cable motion are based on Ablow and Milinazzo, and six-degree-freedom ordinary differential equations are used in the analysis of motion of a towed body. The boundary conditions of the system are derived. The numerical scheme is based on a finite difference method. A number of motions are simulated including maneuvers such as turns and sudden velocity changes.The results show that the numerical method is stable in the whole process of simulation and effective in predicting the motion of the underwater towed system.