Flutter of Flexible Hydrofoil Struts 



1.0 



Figure 9a. Damping ratio c 



20 



kO 



60 80 1 00 



Speed in Knots 

 Figure 9b. Frequency 



120 



1^0 



Figure 9. Hydro elastic mode characteristics for Model 2 

 (Three-dimensional loading calculation) 



377 



