An experimental and theoretical investigation of the drag-divergence on two-dimensional airfoils was conducted. The data were used to design an airfoil for economical cruise at high subsonic speeds. The pressure distributions on optimum airfoils are discussed. A predominant parameter which determines the drag-divergence characteristics improve as the thickness near the leading edge decreases. A method is proposed for developing airfoils with appropriate drag-divergence characteristics. (Author)
On the Drag Divergence of Two-Dimensional Airfoils at Transonic Speeds
1973
112 pages
Report
No indication
English
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