Bindel 



.■3 ^SV \^'^y\ f^SV: Flashing sneef vortex 



Fig. 9c - Cavitation inception curves for 

 oscillating-bladed propeller, with oscilla- 

 tion in advance, ^ = 15° 



Fig. 10a - Cavitation patterns for fixed- 

 bladed propeller, y - 0, 6 = \5° 



1516 



