NAVWEPS OeBOT-80 
BASIC AERODYNAMICS 
DOWNWASH FLOW FIELD BEHIND A RECTANGULAR 
WING ILLUSTRATED BY TUFT-GRID PHOTOGRAPHS 
AR=2.31, k=l.O 
-II- 30° OF FLOW ANGULARITY 
OT 
(DEG) 
0 
‘8 - 
16 
STALL 
18 
(a) TUFT GRID 6 INCHES FROM (b) TUFT GRID 24 INCHES FROM 
TRAILING EDGE TRAILING EDGE 
FROM NACA TN 2674 
F;gure 1.33. Stall Patterns (sheet 2 of 8) 
79