A baseline, elliptical wing with a straight line quarter chord was tested and results compared with a crescent moon shaped planform wing with the same Clark-Y section, chord distribution and aspect ratio of 4.5. The provision of flow visualization photographs assisted in the qualitative assessment of the results and facilitated the analysis of planforms effects on the flow. Induced drag factors of near and below unity were calculated for both wings, which were tested at Reynolds numbers of between 0.40 and 0.55 million. The baseline wing had an induced drag factor of 0.935 compared to the larger induced drag factor of the crescent wing of 0.953.
Effect of Planform on Induced Drag
1990
46 pages
Report
No indication
English
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