Smooth camber change
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Smooth camber change is a design for an aircraft wing by H.F. Parker that made it possible to supplement the lift generated by a plane while landing or taking-off.
The design is drawn in the figure below. At high angle of attack the presence of the streamlines and the wake of the wing below the smooth cambered wing will cause an upward force. This upward force will cause the flexible section to be pushed upward (see figure). The flexible wing section is held at points A and B. The trailing edge is rigid and can rotate about B. Due to this effect the camber of the airfoil is increased.
