Flutter of Flexible Hydrofoil Struts 



i»0 



20 *»0 60 80 100 

 Submergence in Percent Span 



Figure 7a. 



Strut models (bending -type) 



20 







^&& 



20 i»0 60 80 100 



Submergence in Percent Span 



Figure 7b. 



Strut-pod models (torsion -type) 



ko 



.20 



20 kO 60 80 100 

 Submergence in Percent Span 



Figure 7c. 



Strut with pod and foils 



Note : Lines connect data obtained from the same strut 



Figure 7. Comparison of the effect of strut submergence on flutter 

 speed Up for strut models with and without pods and 

 foils 



375 



