SLATS, KRUEGER AND FLAPS SYSTEMS
Each wing is equipped with two-piece trailing edge flap, one piece
leading edge slat and one piece krueger flap. The flaps and slats are
mounted on and guided by rail and rollers assemblies, driven by
ball-screw linear actuators. The krueger flaps are hydraulically
actuated.
The flaps or slats are operated each by a single electrical rotary
actuator driving a flexible shaft, interconnecting mechanically the
ball-screw actuators of both wings.
The actuators are equipped with torque limiters at each output end to
wing. Electronic controller governs flaps and slats operation and
automatically stops their motion when asymmetry conditions are
created.
The krueger flaps are powered from the right hydraulic system and
electrically controlled by Flap/Slat Electronic Control Unit (FSECU) and
by SLATS/KRUEGER/FLAPS selector.
Each krueger flap is operated by hydraulic actuator with internal locks
for both extended and retracted positions. The actuators incorporate
limit switches for indication of locked positions.
Slats/flaps/krueger position is displayed on EICAS. Slats/flaps selector
lever is located on the pedestal. When the lever is placed in one of the
flaps angle positions (12°, 20° and 40°), the slats are extended first.
Slats/krueger flaps may also be selected individually (DN position of
the lever).
The slats always extend fully before flaps and krueger flaps start to
extend and, conversely, flaps and krueger flaps always retract before
slats are retracted.
(Continued)
Gulfstream G200 - Trim System
