Performance of Partially Submerged Propellers 



Fig. 9 - Performance characteristics of propeller 3820 50% subnnerged 



Fig. 10 - Performance characteristics of 

 propeller 3820 35.9% submerged 



K. 



V pn2D4 



All of these quantities are presented as a function of the advance coefficient j . 

 The results at one submergence are presented together to show the effect of 

 advance speed upon the results. 



It may be noted that the thrust and torque curves show a discontinuity, not 

 obtained in the first set of tests upon the prototype Propeller 3767. Part of the 



1461 



