Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов, Страница: 170 / 923

Page 6-15
P/N 140-590032-0007
Revision A4: Sep, 2010
Section III Sub-section 6
FLIGHT CONTROLS
Pilot’s Operating Manual
SECONDARY CONTROLS
FLAP SYSTEM
Interconnected slotted flaps are hydraulically powered from a single flap control unit and transmission
shafting. The flap control unit is normally supplied from the main hydraulic system but an independent
fluid supply from the auxiliary hydraulic system is available in the event of a main system failure.
Flap Control System (Figure 7)
The flap selector lever is connected by a cable to an input lever on the flap control unit. A spring strut
and a spring drum in the cable run compensate for any movement lag. Movement of the input lever
connects hydraulic pressure to operate a hydraulic motor in the flap control unit.
The motor drives the transmission shafting to move the flaps in the selected direction. The motor is
stopped automatically should a control cable failure occur.
When the flaps reach the selected position, the hydraulic pressure is removed from the motor. Further
movement of the flaps is arrested and they are locked at the required angle. Friction devices prevent
the flaps moving away from the selected position in the event of hydraulic failure.
A synchronizing cable circuit is provided to prevent the occurrence of an asymmetric flap condition and
should one flap cease to move, the synchronizing circuit isolates the hydraulic supply to the flap motor,
the flaps stop moving and maintain the position attained at the moment of failure.
A flap servo baulk stops additional movement of the flap control unit input lever from the landing
position. The baulk is released and the lever moved to the lift dump position by an interconnection with
the airbrake control, when this is moved into the lift dump position.