The Aerodynamic Characteristics of Airfoils as Affected by Surface Roughness (1933)
NASA Technical Reports Server (NTRS) · leaf 20
Angle of attack for infinite aspect r atio, oiQ (degrees) Figure 11.- Airfoil: R.A.F. 30 Size: 6" x 36" Scale effect on the lift coefficient as affected by smooth and rough surfaces (open-throat tunnel tests).
NASA Technical Reports Server (NTRS)
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