The mean aerodynamic wing depth (MAC) is a mathematically determined, representative wing depth (airfoil depth) that replaces a real wing in terms of its aerodynamic properties. It represents the imaginary rectangular wing depth at which the Total force (buoyancy) and the Pitching moment of the actual wing would be identical.
In short:
The MAC is the mean airfoil depth of a wing in which the aerodynamic effects of the entire wing - in particular lift and moment - are realistically simplified.
It is mainly used to:
- the Center of gravity (CG) in relation to the wing depth,
- the aerodynamic stability to assess,
- design and approval criteria (e.g. according to EASA or FAA).
If you like, I can also create a graphical representation of the MAC or show you an example with figures.
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