拖曳系统运动传递计算

由母船、拖缆和拖体构成的拖曳系统,在拖航作业中,母船受风浪扰动发生升沉和纵摇运动,水面扰动沿缆传递至拖体,影响探测设备性能。文中研究的合理简化的母船波浪运动预报模型、结合已有的拖缆动力学计算模型耦合拖体空间运动模型,构造衔接条件和转换关系式,建立较为完整的水下拖曳系统运动传递模型。编制相应计算程序,计算了二段式拖曳方式对扰动的传递,归纳其扰动传递特性。表明该模型可应用于拖曳运动稳定的设计分析。

Towed system motion transfer calculation

The towed system includes towing ship, cable and towed body. The main disturbances come from towing ship’s heave and pitch motion induced by sea wave and wind. Sea surface disturbances are trans-ferred along cable to cause towed body bad performance. The reduced ship motion mathematical model, cable dynamics model, and towed body motion model are initially integrated as a new disturbance propa-gation model by connection conditions in this paper. A computer program simulates the surface regular wave disturbance propagation property of two part towed system according to the model. The integral method can be used in the design of sea towed system.