Figure 20a - J = 0.6, V D =51.4 Feet per Second 

 R 0.7 



Figure 20b - J = 0.8, V D =51.8 Feet per Second 

 R 0.7 



Figure 20c - J = 1.077, V., = 49.82 Feet per Second 



R 0.7 



Figure 20 - Tip Vortex Formation on Propeller 4679 at 

 Varying Advance Coefficients 



137 



