4. Or 

 3.0 



2,0 



1.0 

 0.8 



0.6 



0.4 

 0.3 



0.2 



0.1 



1 



Propeller -Induced Appendage Forces 



\ 



o J = 0. 



A J = 0.4 9 K„ 



0.194 



Open Symbols = 1st Harmonic 

 Solid Symbols = 2nd Harmonic 



& 



\ 



\ 



\ 



^A 



\ 



\ 



*/. 



^A 



\ 



\ 



\ 



\ 



\ 



\. 



0.2 0.4 0.6 0.8 

 Spacing/Propeller Diameter 



1.0 



Fig. 29 - Induced force ratio vs spacing ratio for a 

 three -bladed propeller downstream of an appendage, 

 transverse measurements, and an appendage angle 

 of 10° 



199 



