Oscillating-bladed Propellers 



Fig. 6c - Cavitation patterns for oscillating- 

 bladed propeller, with oscillation in advance, 

 7 = ±3°, 4i = 30°, d = 10°, J = 0.65, a = 3 



Fig. 7a - Cavitation patterns for fixed-bladed 

 propeller, y = 0, f? = 10° , J = 0.65, a = Z 



Oscillating- Bladed Propeller with Oscillation in Advance 

 (y= ±3°; 'P= +30°) 



Cavitation Patterns — The same remarks may be made as for 'P = regard- 

 ing the existence of two types of bubble cavitation on the upper part of the back, 

 and of a sheet cavitation along the face leading edge. The same remarks also 

 may be made regarding the influence, not so clear, of the longitude (p. 



1511 



