BOUND OR :INE VORTEX  , OR TIP VORTEX  DEFLECTED AIRSTREAM  (UPW  BOUND VORTEX ONLY  VERTICAL VELOCITIES  IN THE VICINITY OF  THE WING  COUPLED BOUND AND  AVERAGE RELATIVE WIND  TIP VORTICES  V  t  REMOTE  FREE STREAM  AT WING A.C.  DOWNWASH  ANGLE  D it INDUCED DRAG  EFFECTIVE  LIFT-  REMOTE FREE STREAM  NAVWEPS DD-ROT-80  BASIC AERODYNAMICS  Figure 1.30. Wing Vortex System and Induced Flow  67 