NAVWEPS OO-ROT-RO 
APPLICATION OF AERODYNAMICS 
TO SPECIFIC PROBLEMS OF FLYING 
VELOCITY DUE 
TO FORWARD 
FLIGHT 
RETREATING GLADE 
VELOCITY DUE 
TO ROTATION 
REVERSED FLOW 
NEGATIVE STALL 
NEGATIVE LIFT 
VELOCITY DUE 
I - POSITIVE STALL ANGLE 
LOCAL I/ 
BLADE 
ANGLE OD- nrc7 I 
OF HUB 
ATTACK 
ETRiATING BLADE 
-lop I _- - - NEGATIVE STALL ANGLE 
, 
-ADVANCING 
BLADE 
Figure 6.16. Rotor Flow Conditions in Forward f/i& 
403