NAVWEPS 00-BOT-80 
BASIC AERODYNAMICS 
BASIC SECTION 
PLAIN FLAP SPLIT FLAP 
SLOTTED FLAP FOWLER FLAP 
EFFECT ON SECTION-LIFT AND DRAG 
CHARACTERISTICS OF A 25% CHORD 
FLAP DEFLECTED 30° 
I SLOTTED 
3.0 - 
2.5 - 
2.0 - 
1.5 - 
I.O- 
.5 - 
0 -I- 
O 
FOW&ER 
SECTION ANGLE OF ATTACK SECTION DRAG COEFFICIENT 
o,,, DEGREES cd 
Figure 1.17. Flap Configurations 
40 
Revised January 1965