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Profile-Drag Coefficients of Conventional and Low-Drag Airfoils as Obtained in Flight
"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" (p.1).
Date:
May 1944
Creator:
Zalovcik, John A.
System:
The UNT Digital Library