2006•44th AIAA Aerospace Sciences Meeting and ExhibitRequires access

Investigation of Aerodynamic Performance on Low-Aspect-Ratio Wings at Low Reynolds Numbers

Fei‐Bin Hsiao, Chi‐Yu Lin, Y. C. Liu, Di-Bao Wang, Chin‐Yi Wei, Chih-Huang Chiang, Cheng-Chiang Hsu

Abstract

The aerodynamic performances of low-aspect-ratio wings at low Reynolds numbers were investigated experimentally in this study. The aerodynamic properties, including lift, drag, lift-to-drag ratio and induced drag, were measured and analyzed in a low-speed wind tunnel. The effects of thickness ratio were found to be significant in aerodynamic properties. The lift due to tip vortices was prominent for wings of AR = 1 and their stall angles were all larger than 20 o . Two forms of nonlinear equations of lift curves were obtained. The vortex

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Key concepts: Aerodynamics, Reynolds number, Aspect ratio (aeronautics), Computer science, Aerospace engineering, Mechanics, Physics, Materials science