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The trailing edge of an aerodynamic surface such as a wing is its rear edge, where the airflow separated by the leading edge meets. [1] Essential flight control surfaces are attached here to control the direction of the departing air flow, and exert a controlling force on the aircraft. [2] Such control surfaces include ailerons on the wings for ...
A rising edge (or positive edge) is the low-to-high transition. [1] A falling edge (or negative edge) is the high-to-low transition. [1] In the case of a pulse, which consists of two edges: The leading edge (or front edge) is the first edge of the pulse. The trailing edge (or back edge) is the second edge of the pulse.
If the trailing edge has a non-zero angle, the flow velocity there must be zero. At a cusped trailing edge, however, the velocity can be non-zero although it must still be identical above and below the airfoil. Another formulation is that the pressure must be continuous at the trailing edge. The Kutta condition does not apply to unsteady flow.
The leading edge is the point at the front of the airfoil that has maximum curvature (minimum radius). [10] The trailing edge is the point on the airfoil most remote from the leading edge. The angle between the upper and lower surfaces at the trailing edge is the trailing edge angle.
Gurney flap. The Gurney flap (or wickerbill) is a small tab projecting from the trailing edge of a wing. Typically it is set at a right angle to the pressure-side surface of the airfoil [2] and projects 1% to 2% of the wing chord. [3] This trailing edge device can improve the performance of a simple airfoil to nearly the same level as a complex ...
An adaptive compliant wing designed by FlexSys Inc. features a variable- camber trailing edge which can be deflected up to ±10°, thus acting like a flap -equipped wing, but without the individual segments and gaps typical in a flap system. The wing itself can be twisted up to 1° per foot of span. The wing's shape can be changed at a rate of ...
Chords on a swept-wing. In aeronautics, the chord is an imaginary straight line joining the leading edge and trailing edge of an aerofoil. The chord length is the distance between the trailing edge and the point where the chord intersects the leading edge. [1][2] The point on the leading edge used to define the chord may be the surface point of ...
The empennage of an Atlas Air Boeing 747-200. The empennage (/ ˌɑːmpɪˈnɑːʒ / or / ˈɛmpɪnɪdʒ /), also known as the tail or tail assembly, is a structure at the rear of an aircraft that provides stability during flight, in a way similar to the feathers on an arrow. [1][2][3] The term derives from the French language verb empenner ...