393 



Kd 



08 



0.7 



0.6 



Kd 



1 .05 



0.9 



No Grid 



Grid No,1 

 a = rad 



Grid No, 2 



0.75 



No Grid 



Grid No 1 

 b) a - 0.G52 rad 



Grid No. 2 



FIGURE 12 (a) (b) . Cavitation on the hydrofoil of the Clark y 11.7 profile. 



