NAVWEPS OO-BOT-RD 
BASIC AERODYNAMICS 
DOWNWASH FLOW FIELD BEHIND 
A DELTA WING ILLUSTRATED 
BY TUFT-GRID PHOTOGRAPHS AT 
VARIOUS ANGLES OF ATTACK 
--A-- 30” OF FLOW ANGULARITY 
II 
“T 
(DEG) 
0 
16 
32 
I) TUFT GRID 6 INCHES FROM (b) TUFT GRID 24 INCHES FROM 
TRAILING EDGE. TRAILING EDGE. 
FROM NACA TN 2674 
Figure 1.19. Wing Three Dimensional Flow (sheet 2 of 2) 
65