230 



®. 



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'Jt, O 12 



^ri^ 



® 1 ® 



® ® 



I I I =sk 



\ 



I I 



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^ 



® ® ® @ b: IB) ,f) 



Boundary Layer Positions s«i. sns'iov.o' 

 FIGURE 4. Plan view of hull showing boundary layer rake locations 



9 J> '2) ® 5 



1 -^i — 



I I 



I ^__ — , — 



f-- tJ — 



r/R = 0.456 

 r/R = 0.633 

 r/R = 0.781 

 r/R = 0.963 



'S'ROPELLER " '-^^ f^ (0-51 ■" > 

 Rjjjjg » 0.727 ft. (0.222 mj 



180 



FIGURE 5. Afterbody sections of ATHENA hull showing radii of wake measurements. 



