What is the leading edge of a plane?
In this regard, what are leading edge devices?
Leading edge devices are located at the leading edge of the wing and can be deployed during different flight phases (take off, landing and cruise) in order to improve the aerodynamic performances of the the aircraft.
Considering this, what is the trailing edge of an aircraft wing?
The trailing edge of an aerodynamic surface such as a wing is its rear edge, where the airflow separated by the leading edge rejoins. Essential flight control surfaces are attached here to control the direction of the departing air flow, and exert a controlling force on the aircraft.
The mean camber line is the locus of points halfway between the top surface and the bottom surface (which are sometimes referred as upper and lower cambers). For a symmetrical airfoil, it is merged with the chord line. This curve is described by a polynomial function at each point along the chord axis.