Besoh and Liu 



30 



25 



20 



'5, 



10 



Mode 2. 



— 3-D i m. Value 



(20.8*) 



k 



15 20~ 25 



Aerodynamic Center in 

 Percent Chord Aft of L.E. 



o 

 5 15 



10 



Mode 2 



3 - Dim. Value 

 (0.76) 



Z 



0.6 ^0.8 1.0 

 Noncirculatory Modification 

 Factor p 



Lift Slope in Percent of 2ti 



Figure 12. Effect of loading modifications on calculated flutter 

 speed Up for Model 2T 



380 



