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Profile-drag Coefficients of Conventional and Low-drag Airfoils as Obtained in Flight

John A. Zalovcik

出版	National Advisory Committee for Aeronautics, 1944
URL	http://books.google.com.hk/books?id=3E1Oustj5SoC&hl=&source=gbs_api

註釋

Summary: The results of flight investigations of the profile drag of several carefully finished conventional and low-drag airfoils are presented. The results indicated that in all cases lower profile-drag coefficients were obtained with the low-drag than with the conventional airfoils over the range of lift coefficient tested and that, for comparable conditions of lift coefficient and Reynolds number, the low-drag airfoils may have profile-drag coefficients which are at least 27 percent lower than the profile-drag coefficients of the conventional airfoils.