I’m assuming that’s a special laminar surface treatment. Is there a patent?
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I have this question in my head for some time about compensation for right rudder. Wondering if I can add 1/2 of symmetrical airfoil to my vertical stabilizer. Wondering if people do this instead of changing angle. This piece can be CNC made from foam with different thickness to try it out until correct one found. 1/2 of 6% or 8% airfoil can be used to start with.