评定大相对功率单桨船舶初稳性设计时的最大横倾力矩  

The Method of Evaluating the Maximum Transverse Moment in Disigning the Initial Stability of the Single-Screw Ship with Large Relative Power

作　　者：徐大伟 顾佩芝 

出　　处：《船舶与海洋工程》1995年第2期22-25,3,共5页Naval Architecture and Ocean Engineering

摘　　要：单桨船舶初稳性选择设计时通常仅以“横向风压力作用”、“移动重量集中移向一舷”及“回航时离心力作用”等3种不利情况同时出现时船舶所遭受的横倾力矩—最大横倾力矩作为衡准条件。笔者认为,对大相对功率单桨船舶而言,在其初稳性选择设计时还应同时计入螺旋桨阻力转矩作为衡准条件的最大横倾力矩。为了便于计算,本文介绍了由笔者导出的包括螺旋桨阻力转矩影响在内的最大横倾力矩计算公式。The foundation of designing and evaluating the initial stability of the single - screw ship according to the traditional method is the maximum transverse moment to which the ship is subjected under the combined action of the three harmful effects namely the effect of transverse wind pressure,the effect of moving all movable weights towards one side and the effect of the centrifugal force during turning. This is familiar to all the ship builders, Resesrches have indicated that the resisting momemt acting on the propeller of a single -screw ship with large relative power under heavy load should not be omitted. On the basis of systematical analysis and research,it is the openion of the author that the resisting moment acting on the propeller should be included in the maximum transverse moment in evaluating the initial stability of the single - screw ship with large relative power. For the convenience of calculation,the maximum transverse moment formula including the effect of the resisting moment of the propeller is derived in this paper. The recommended formula of calculating the maximum transverse moment is worthwhile to be referred for disigning and evaluating the initial stability of the single -screw ship with large relative power.

关 键 词：初稳性 大相对功率 单桨船舶 螺旋桨阻力矩 最大横倾力矩 

分 类 号：U661[交通运输工程—船舶及航道工程]