Fred Johnson wrote: > If a tapered wing requires washout to keep the tip from stalling first, > and > a barn door no taper wing doesn't require washout, what would a no taper > wing need if it just changes thickness from root to tip but not chord?
Well apparently you're talking about a different airfoil root to tip so the answer would be "that depends". Obviously the thickness ratio will have to get smaller if it's tapered going out, while retaining the same chord length. If the two airfoils are from the same family and the lift coefficients are anywhere near each other, the answer is almost certainly "no washout required". I suppose it's possible you could have two completely different airfoils and the one out on the tip is creating lots more lift than the inboard, but you'd have to try pretty hard to find that combination and screw it up that bad. As you mentioned before though, you'd be hard pressed to improve on an airfoil designed by one of the leading airfoil experts specifically for the KR2S. See http://www.krnet.org/as504x/ for details on that. Mark Langford n5...@hiwaay.net website www.n56ml.com
