Figure 2 - Proposed Spatial Distribution of Vortex Structure: 

 1 - Viscous Inner Region; 2 - Smoothed-Out Spiral, 

 Velocity Distribution Essentially Inviscid; 

 3 - Tightly Wound Spiral; and 4 - 

 Unrolled Portion of Vortex Sheet 



0.15 



0.10 



0.05 



0.00 



• EXPERIMENT (REFERENCE 3) 

 ... THEORY BASED ON 6^ (REFERENCED 

 — ^ THEORY BASED ON 5 (REFERENCED 



10 



15x 10' 



(a/DEG)'= R 



2 a 1/2 



Figure 3 - Variation of Tip-Vortex Core Axial Velocity w^ with 

 Reynolds Number R 



