高性能机翼帆的气动特性  

Aerodynamic Characteristics of High Performance Wingsail

作　　者：华汉金[1] 许学彦[1] 

机构地区：[1]中国船舶及海洋工程设计研究院

出　　处：《船舶工程》1990年第5期13-17,2,共5页Ship Engineering

摘　　要：高性能机翼帆是一种多翼段(前后四段)可动翼型(NACAOO15)和小展弦比(λ=2)的矩形翼,其最大推力系数C_(xmax)=3.73,而三张帆的最佳布局,可使单位横风截面上的风帆推力提高50％左右。这样,三张多段机翼组合帆的最大推力系数可达5.6,它比现代层流型弯板型刚性帆的C_(xmax)高二倍以上。本文通过对高性能机翼帆气动特性的研究,设计出了一种组合式空气助推器,其经济效益令人瞩目。This paper presents the aerodynamic characteristics of high performance wingsail composed of multi-element variable airfoils.The experimental results have shown that in spite of its low aspect ratio (λ=2),the maximum thrust coefficient Cxmax of the high performance wingfoil is as high as 3.73.The optimum composition of this type of sails would raise the thrust coefficient even further(Cxmax up to 5.6).Thus,the thrust coefficient could be more than twice that of the conventional rigid sail of circular arc type.The net profit is estimated to be more than 200000 per year and the capital cost of such a energy-saving device could be recovered within 4 years.

关 键 词：高性能机翼帆 气动特性 帆 

分 类 号：U664.31[交通运输工程—船舶及航道工程]