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I- 



> 3 



< 

 a 



X 



ui 

 I- 

 cc 

 o 

 > 



YA 



1 — 



CONSTANT PITCH (REFERENCE 6) 



... 10% PITCH REDUCTION AT TIP (REFERENCE 6) 



-//- 



0.80 



0.90 

 ADVANCE COEFFICIENT J, 



1.00 



Figure 6 - Variation of Propeller Tip Vortex Cavitation Index a 

 with Advance Coefficient J , with and without 



Tip Pitch Reduction 



(Data from Reference 6) 



13 



