airfoil

I "built" a Serafin a while ago and decided I'd like to build another Blejyzk that would be a capable aerobatic ship with some thermal ability. I wanted to know a bit more about airfoils for "speed" and "thermal." I asked a few questions about HN1033, S6063, and S7012 airfoils on the Modeling...

I had this kid* at the slope ask why I was so concerned with thick trailing edges (TE). I told him it was one of the key elements in lowering the drag from the wing. I also told him that the shape of the edge was also critical. Sharp corner are much preferred to a radiused TE...

I found an old Dynaflight Talon kit. While I liked the Talon I hated the Eppler 205 airfoil. I've learned that the original designer has published what he calls a Super Talon. That is he is publishing the design without the compromisses made for kit production. What I'd like to ask is, does...