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Airfoil section comments on PS-1 airfoil on ProTech PT2C

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prostar

New Member
Joined
Jul 5, 2005
Messages
2
I own and fly a ProTech PT2C with a 150HP 0-320 on the nose. I am not real happy with the neutral stability, or better yet, lack of it and the lazy aileron responses especially at low speeds. With all the dihedral, thick wing, STOL performance, this airplane should fly like a puppy dog and be responsive at slow speeds where it is designed to fly. I have installed gap seals which helped some. It is rigged correctly and CG is right on the money. I have read a bit of Riblett's comments on the PS-1 airfoil that this airplane was designed around. He wasn't exactly pleased with that selection for this airplane. He did suggest the installation of VG's at a rather unusual location...about 70% back ...as he mentioned that the entire wing suffered from flow separation at about that area...which would explain the lazy ailerons, poor neutral stability, and the pitch up that occurrs when the flaps are put in the reflex position. Any comments or suggestions? Jim
 
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