In article ,
"Larry Smith" wrote:

Aluminum and laminar flow airfoils don't mix either.

Gotta say that I like composites best of all for aircraft. BUT, there
are some very successful laminar flow wing aircraft with aluminum wing
skins. Schreder HP series gliders, most of them anyway, use aluminum
skins bonded to wide foam ribs. This construction method can, and often
does, result in excellent laminar flow wings that hold their profile.

Still, composite is the way to go (unless rags and sticks, or rags and
tubes, or sheet aluminum fits the mission better)

Wallace Berry
N301BW (Glasflugel H301 Libelle, all composite glider)
N5423M (rags and sticks and tubes Stits SA6b)