SURFACE TUFT PHOTOGRAPHS  FOR A SWEPT, TAPERED WING  45O DELTA, AR=4.0. x=0  i =0  DEGREES  a = 12 DEGREES  a = 8 DEGREES  B = 16 DEGREES  a = 20 DEGREES  FROM NACA TN 2674  Figure 1.33. Stall Patterns (sheet 5 of 8 ’ )  NAVWEPS 00-BOT-BO  BASIC AERODYMAAlllCS 