BendixKing KFC 500 - Manual (Page 21)

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KSA 572 TRIM ACTUATOR
The KFC 500 incorporates three trim
actuators (one per axis) in parallel
with the helicopter control linkage to
provide low-speed command inputs
into the control system. The trim
actuators provide the long-term con-
trol guidance by moving the control
system to allow the linear actuators
to maintain control authority.The arti-
ficial feel system incorporates a
switch which allows pilot fly-through
capability when the pilot moves the
cyclic which actuates a detent
switch. When the detent switch is
activated, the trim and linear actuator
drive is interrupted.
KLA 570 LINEAR ACTUATOR
A KLA 570 Linear Actuator is
installed in each axis of the control
system. The linear actuator is
placed in series with the control rods
to provide limited authority high-
speed damping of the helicopter.
The linear actuator contains a posi-
tion transducer for feedback of actu-
ator position to the Flight Computer.
SENSORS
KVG 350 ATTITUDE GYRO
The KVG 350 Vertical Gyro provides
attitude information to the EFS 40
Symbol Generator and KCP 520
Flight Computer for cockpit display,
computations, and system monitor-
ing. To enhance safety, the KFC
500 incorporates two vertical gyros
for EFIS reversionary capability and
monitoring. The EFS 40 installation
allows the pilot to switch the dis-
played vertical gyro reference using
the VG SEL pushbutton.
POSITION
SYNCHRO
CYCLIC
FORCE
GRADIENT
SPRING
DETENT
SWITCH
INSIDE
TO
LINEAR
ACTUATOR
TRIM SERVO/
MAG BRAKE
AFCS TRIM INTERFACE