>A number of things trade off. As aspect ratio goes up,  Cavg goes down while 
>W/L goes up (both numerator effects). Meanwhile, V^2 goes  up (denominator 
>effect) as W/L goes up for a relatively constant Cl (assuming  the plane 
>maintains approximately the same AoA at min sink or max L/D, whichever  you 
choose). 

Dave, Just noticed another strange assumption in your arguments.
I don't see how increasing AR changes W/L. It is constant unless you want to 
account for mass changes due to AR changes, which is true in reality, but again 
for a fixed span the weight of the wing is usually proportional to the wing 
area, therefore W/L will actually decrease for higher AR (smaller wing area).
Regards,
Oleg.

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