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Effect of the Surface Condition of a Wing on the Aerodynamic Characteristics of an AirplaneIn order to determine the effect of the surface conditions of a wing on the aerodynamic characteristics of an airplane, tests were conducted in the N.A.C.A. full-scale wind tunnel on the Fairchild F-22 airplane first with normal commercial finish of wing surface and later with the same wing polished. Comparison of the characteristics of the airplane with the two surface conditions shows that the polish caused a negligible change in the lift curve, but reduced the minimum drag coefficient by 0.001. This reduction in drag if applied to an airplane with a given speed of 200 miles per hour and a minimum drag coefficient of 0.025 would increase the speed only 2.9 miles per hour, but if the speed remained the same, the power would be reduced 4 percent.
Document ID
19930081519
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Defrance, S J
Date Acquired
September 6, 2013
Publication Date
April 1, 1934
Report/Patent Number
NACA-TN-495
Accession Number
93R10809
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
AIRPLANES - FAIRCHILD 22 (Amer ) WIND TUNNEL TEST
LIFT & DRAG - FAIRCHILD 22

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