1404 極低アスペクト比矩形翼の全迎え角空力特性とその流れ構造に関する研究

概要

論文の詳細を見る
Aerodynamic characteristics and near-field flow fields of rectangular flat-plate wings with very small aspect ratios, λ=1∿0.05 at full angles of attack, α=0∿90 deg, have been presented. The flow details were investigated using oil film flow visualization and PIV measurements. The typical features of surface flows on wings with various aspect ratios can be classified into 6 types, i.e., un-separated(US), partially separated(PS-1) with U-type flow reattachment, PS-2 with O-type reattachment, PS-3 with long cigar-type reattachment, PS-4 with indistinct reattachment and fully separeted(FS). The aerodynamic characteristics and near-flow structures of test wings can be classified into three groups corresponding to their aspect ratios, which are (1) small aspect ratio wing (λ=1), (2) smaller aspect ratio wings (λ=0.75∿0.66) and (3) very small aspect ratio wings (λ=0.5∿0.05). It has been confirmed that the aerodynamics and detailed flow structures investigated exhibit very close correlations.
社団法人日本機械学会の論文
2002-09-20