基于螺旋桨负荷特性的双桨船操纵性预报  

Maneuverability Prediction for Twin-Screw Ships by Considering the Loads of Screws

作　　者：胡晓芳[1] 陈松林[2] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064 [2]海军装备部,北京100841

出　　处：《中国舰船研究》2014年第2期17-21,共5页Chinese Journal of Ship Research

摘　　要：通过对双桨船内、外两桨负荷变化情况及其对舰船回转性和回转速降计算结果影响的分析,提出了采用等功率法分别计算双桨船内、外两桨的转速、进速系数等,进而确定两桨的推力和转艏力矩,从而进行双桨船回转性和回转时速降预报。以某双桨船为例,分别用等转速法、等推力法和等功率法进行回转轨迹、回转时螺旋桨推力、速降和转艏力矩的计算。计算结果表明:采用等功率法与采用等转速法所得到的回转轨迹基本相同,较之等推力法所得到的回转直径的计算结果更接近实船实际情况;采用等功率法所得到的速降介于等转速法和等推力法之间,最为接近实船的实际情况。By analyzing the effects of inboard and outboard screws changes of twin-screw ship on theship＇s overall turning performance and velocity decline,this paper first presents a method to calculate therotation speed,thrust coefficient,etc.,and the thrusts of screws as well as the turning moment of the shipare then confirmed,which leads to the calculation of the turning course and ship velocity. Taking atwin-screw ship as an example,the paper calculates its turning courses,thrusts,velocity,and turning moment by maintaining the rotation speed,thrust,and torque of the screw. Results show that the turningcourse calculated with constant rotation speed and constant torque are almost identical,and are quite closeto reality;the velocity decline calculated with constant torque is between the one obtained with the othertwo approaches,and is seen to resemble most to reality.

关 键 词：操纵性 MMG数学模型 双桨船 螺旋桨 负荷 

分 类 号：U661.33[交通运输工程—船舶及航道工程]