NAVWEPS OO-BOT-RD  BASIC AERODYNAMICS  Figure 1.19. Wing Three Dimensional Flow (sheet 2 of 2)  65  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 