Flutter of Flexible Hydrofoil Struts 



Mode 2 

 18.8 Hz 



Mode 3 

 36.2 Hz 



Figure 15a. Strut 



53^ ^^ 



Mode 2 

 10.9 Hz 



Mode 3 

 15- *» Hz 



Figure 15b. Strut with pod 



»^ 



Mode 2 

 10.0 Hz 



Mode 3 

 11.6 Hz 



Figure 15c. Strut with pod and foils 



Figure 15. Calculated nodal lines for strut of Reference 2 at 

 83 percent submergence in water 



383 



