This was purely a theoretical question.
I've been doing some reading about aircraft design, and have started to understand some of the *very basics*.
The Foilsim program is a good tutorial for very basic concepts.
On the other end of the spectrum, I've downloaded Xfoil, and found some other web sites on airfoil design.
Volume:
You sound like you have some knowledge in this area
>By the way, the Extra 300 has no dihedral, no camber and no twist like most of the aerobatic planes.
I guessed that an aerobatic wing would not have dihedral, as you really don't want it to be stabile.
I've been looking on the web for specs of wings like the Extra or other aerobatic aircraft. Just found a l ink re: the "One Desgin"
http://www.eaa1000.av.org/technicl/o...Considerations