大型船舶侧推器操纵效能计算

为探讨首侧推器操纵效能,本文在有航速、零速和横移的不同工况下,分别采用三自由度、二自由度数学模型,并对1条12300 t大型滚装船进行了首侧推器操纵效能的实例计算.计算结果表明侧推器操纵效能与航速及桨转速直接有关,零航速最好,且随桨转速增高而增强;结果同时也表明了借助于主推进器、首侧推器和舵的联合操纵可实施纯横移运动.

Maneuvering efficiency calculation of lateral thrusters for large vessels

In order to inquire into maneuvering efficiency of the bow lateral thruster,a three-degree-freedom mathematical model and a two-degree-freedom mathematical model were used to correspond to the different operating conditions of having velocity,zero velocity and crabbing motion,and take example for a12300t Ro.Ro vessel to calculate the maneuvering efficiency.The calculated results indicate that maneuvering efficiency of the bow lateral thruster is related to velocity and thruster's rotate speed directly,it is the best at zero velocity,and maneuvering efficiency of the bow lateral thruster increase with increas-ing thruster's rotate speed;the calculated results also indicate that crabbing motion can be operated for large vessels under the main thruster,the bow lateral thruster and the rudder's united control.