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I read here an explanation about angle of attack (AoA) as below: Overly long (forward-back wise) wings will generally have a smaller critical Angle of Attack while smaller ones will have more tolerance before stalling since Airflow starts to become turbulent in form of eddy currents.

I never heard that claim before neither I ever read. I have searched in this forum if someone asked that question previously, but seem is not. I could not find. Is anyone have reference to this claim?

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It is a bit unclear, but I think what he is trying to say is if you have longer chord, then separation of the flow will happen at lower AOA than with a shorter chord, which is plausible as the boundary layer grows thicker and thicker with longer distance. And stall=flow separation basically.

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