hello everyone at rcuniverse.

maybe someone can answer my question?

i want to build multi taper glider wing and use 4 different airfoils in wing.

airfoils are hq series and all airfoils are exactly same with respect to camber etc. differing only in thickness. thickness starts at 9% at root and then 8.5% then 8% and at tip 7.5% it is 3 taper wing

my question is, do i need to use any washout in wing?

my thinking is since airfoils are exactly same except for thickness then if i design wing with proper lift distribution wing should not need washout.

but i have feeling that maybe since airfoils thin as they go to tip maybe cause aerodynamic washin?

but i not sure so any one can comment i appreciate it.


Hai Dang


i ask this question elsewhere but i still confuse and please excuse my english