The simplest asymmetric foils are the NACA 4-digit series foils, which use the same formula as that used to generate the 00xx symmetric foils, but with the line of mean camber bent. Look at other dictionaries: camber line — A line joining the leading and trailing edges of an airfoil equidistant from the upper and lower surfaces. For a symmetric airfoil the upper surface is a reflection of the lower surface and the mean camber line will fall on top of the chord line. Call this function "Z(x)". One is the position of mean camber line, given in the form of x,y where x is usually given in percentages of chord length. $\endgroup$ – mins Jul 12 '17 at 0:18 The camber line of an airfoil extends from the leading edge of the airfoil to the trailing edge and its position is given as a function of distance measured along the chord of the airfoil. To fully define an airfoil we also need a thickness function "T(x)", which describes the thickness of the airfoil at any given point. The NACA airfoil section is created from a camber line and a thickness distribution plotted perpendicular to the camber line. Relative airflow (RAF) The relative airflow is direction of undisturbed airflow relative to the aircraft wing. If we plot the points that lie halfway between the upper and lower surfaces, we obtain a curve called the mean camber line. Often airfoil shapes are given by specification of camber line and thickness functions. So yes, when the camber is not reflexive (no inflection point), this is a measure of the difference with the chord. The camber line is a curve starting and ending at the same points as the chord, but where each single point is equidistant from both the top and bottom surface. The camber is the curve of the upper and lower surfaces of an airfoil.This curve is measured by how much it departs from the chord of the airfoil (the horizontal line joining the leading and trailing edges). the chord line is th line from the leading edge of the airfoil, intended as its foremost portion, tho th trailing edge of th airfoil, and it's always a straight line. Also known as mean line and mean camber line. The Mean Camber Line is a line from the leading edge to the trailing edge of the aerofoil section that follows the camber of the aerofoil and cuts it into two equal pieces, top and bottom half. maximum mean camber — The maximum camber of the median line of a wing section from the root to the tip … Second set of data is thickness at percentages of chord length. The camber of an airfoil can be defined by a camber line, which is the curve that is halfway between the upper and lower surfaces of the airfoil. A section of a cambered wing … Aviation dictionary. The maximum distance between the two lines is called the camber, which is a measure of the curvature of the airfoil (high camber means high curvature). Thickness is always drawn perpendicular to the camber line(! But in most cases, the mean camber line and the chord line are two separate lines. Usually, profiles are defined with two sets of data. How are the mean camber line and the camber of an airfoil related? Some airfoils have very little camber, i.e., the airfoil looks flat, while others have a higher degree of camber. This is an airfoil / profile. The more the airfoil is cambered, the more it is asymmetric , at some point the bottom face becomes concave (by definition of the mean line) and the chord is outside of the airfoil. The camber line is shown in red, and the thickness – or the symmetrical airfoil 0012 – is shown in purple. The equation for the camber line is split into sections either side of the point of maximum camber position (P). 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