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Summary
DescriptionWing profile nomenclature.svg
English: Vocabulary terms used in the aeronautical domain. Notes:
The angle of attack is measured relative to freestream velocity (measured far ahead), not local relative velocity (which varies both in direction and magnitude in the vicinity of the airfoil) ;
The chord line is a straight line going from the leading edge (point of minimum radius) to the trailing edge;
The mean camber line (or simply "camber line") is constituted by the midpoints of all airfoil cross-section segments perpendicular to the chord.
Different definitions for the thickness
Note that the thickness can be defined in several ways (see File:Airfoil thickness definition.svg). The so-called "British convention" is used here.
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