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中文摘要：
拖船直拖稳态定长回转过程中的拖缆暂态已有研究，大半径拖船回转，有Chapman大半径定长回转解法；小半径拖船回转，拖体轨迹是拖体深度随着时间波动的螺旋线形状，最终趋于Chapman稳态回转值。通过定义拖体轨迹与深度的单调波动关系，采用计算机三维数值模拟，提出了另一种确定拖船回转机动下拖缆暂态的Chapman理沦大半径与小半径过渡值的新方法。得出某些结论对海洋工程海底目标确定有重要意义。
英文摘要：
There have been some researches on the dynamic behavior of a towed cable system. For large- radius ship turns, Chapman contributed a turning solution; for small-radius ship turns, the vehicle trajectory followed a corkscrew pattern with the vehicle depth oscillating about, decaying to the steady-state turning solution of Chapman. This paper defined a monotonic and oscillatory relationship between vehicle depth and trajectory, offered a new three-dimensional numerical simulation method to measure the transition radius between large-radius and small-radius behavior of towed cable during ship turning maneuver. Some conclusions are meaningful to target detection on sea bottom in ocean engineering.
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