40 



30 — 



20 - 



10 — 





I 



PROPELLER 



AREA RATIO 







4132 



0.303 







4118 



0.606 



\ 





4133 



1.212 





DATA FROM REFERENCE 10 



\ 



^\ ^41 32 







\^^V411^V 



DESIGN 

 J = 0.833 





4133\. ^V ^ 



V 







1 1 



N 



1 



r 



0.5 



0.6 0.7 0.8 



PROPELLER ADVANCE COEFFICIENT J, 



0.9 



Figure 7 - Variation of Propeller Tip Vortex Cavitation Index as a 

 Function of Advance Coefficient for Various Propeller Area Ratios 



(Data from Reference 10) 



15 



