Flaperon Control System
The flaperon control system, shown in
figure 9-10, is an example of lateral control provided
by an electrohydraulic-mechanical flaperon system.
The system includes an inboard and outboard flaperon
for each wing and three actuators (a single flaperon
autopilot actuator and a flaperon power actuator in
each wing).
Control stick movement, left or right, raises the
respective two flaperons, while the opposite two
remain flush with the wing. Full throw of the control
stick by the pilot causes the inboard flaperon to rise
49 1/2 degrees and the outboard flaperon to rise
53 degrees. In flight, the flaperon can also be
positioned by the AFCS. Control stick movements
are transferred through the pushrod and bell crank
system to the flaperon autopilot actuator. Mechanical
outputs from this actuator are conveyed to a gearing
mechanism, at which point linkage to the left and
right wing flaperon power actuators separates. The
gearing mechanism transmits movement to the left or
right flaperon, while the opposite flaperon is
Figure 9-10.—Flaperon control system.
9-12
