Originally Posted by
lomapaseo
I don't believe I really get this point. It sounds OK if indeed the airflow was not parallel with the fuselage at some locations. But why wouldn't the streamline effects be well known beforehand from wind tunnel testing and the AOA vanes located at a point where the lines are truly parallel?
That defintely is not practical or even achievable. All that matters is the calibration is reasonably linear and of reasonable magnitude... wouldn't have thought AoA is double freestream values around nose though!