Landing Flaps Drive System

General layout

The photograph shows the central drive unit (consisting of the two motors and the main gear box) and the four actuators.

Not shown are the flexible shafts (several meters long) between the main gear box and the actuators.

Because the landing flap panels have a trapezoidal shape and the Fowler travel is longer on the inboard, a special link between the spindle nut and the panel is used for compensation. By the use of slightly longer spindles the other parts could remain identical. Only the left-hand and right-hand style of the actuator housing was necessary.

General layout (Landing Flaps Drive System)
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