Surface pressure distributions and wake profiles were obtained for the NACA 63 2 215 aeorfoil with Gurney and 45 degree trailing edge flaps. The wind tunnel tests were made with flap chords in the range 2/3 % to 2 1/2 % of the aerofoil chord. Lift and drag data determined from the pressure measurements indicate a superior performance of the 45 degree trailing edge flap compared with the Gurney flap. The 2 % chord 45 degree trailing edge flap increased the maximum lift coefficient from 1,06 to about 1,4 with a maximum lift-to-drag ratio similar to that of the wing without flap but a higher value of the lift coefficient. At low to moderate lift coefficients the flapped aerofoil produced lower lift-to-drag ratio.
Aerodynamic characteristics of an aerofoil with small trailing edge flaps
Aerodynamische Eigenschaften eines Tragflügels mit kleinen hinteren Flügelklappen
Wind Engineering ; 19 , 3 ; 167-172
1995
6 Seiten, 8 Bilder, 10 Quellen
Article (Journal)
English
Enhanced Aerofoil Performance Using Small Trailing-Edge Flaps
Online Contents | 1997
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