Bindel 



4 FTV 



FHV -.Flashing hub vortex 



Flashing Up vortex 

 Flashing sheet vortex 



: Flashing shei^t 



Bubbles 



Fig. 4c - Cavitation inception curves for 

 oscillating-bladed propeller, with oscilla- 

 tion in advance, 6? = 10° 



Fig. 5a - Cavitation patterns for fixed-bladed 

 propeller, 7 := 0, 6? = 10° , J = 0.50, ct = 5 



1508 



