I am referring to two things, one is an article from Barnaby Wainfan in Kitplanes a few months back talked about it and the other are RV's. unless I am mistaken??
I know sailplanes will change the entire airfoil to a higher lifting airfoil at the tip from the root. Where the root will be fat up to 24% thick an the change to higher lift but thinner airfoil at the tip. Fred Johnson Reno, NV Tom wrote: If I may... --------------------------------------- Fred: "(if) a barn door no taper wing doesn't require washout," Old Piper Hershey-bar wings I've looked at have washout. Which ones are you referring to that don't 'need' washout? Washout is one strategy to helping the root stall before the tip. Hershey-bars aren't immune from this need. --------------------------------------- Fred: "(what would a no taper wing need if it just changes thickness from root to tip but not chord?" It's long been my understanding, an alternative to washout for almost any (general aviation, Hershey-bar or tapered) wing would be to have the chord/thickness ratio become 'fatter' as you near the tip, not thinner. This allows the tip to keep flying while the root stalls. Seems I first heard about this approach from the BD-5, which had a tapered wing. (I could sure go for a Hershey-bar now)
