Download - L45 M 22 Auto FlightFam
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7/28/2019 L45 M 22 Auto FlightFam
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Auto Flight
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM2
Auto Flight Overview
Auto flight introduction
Autopilot
•Flight directors
•Autopilot/yaw damper•Autopilot trim
Mach trim
Rudder boost
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM3
Auto Flight IntroductionFlight directors
•Controls lateral
and vertical
command bars on
primary flight
display (PFD)
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM4
Auto Flight IntroductionAutopilot/yaw
damper•Contained within
the No. 2 IC-600
integrated
computer
•Controls aircraft
via servo control of
elevators, ailerons,
and rudder
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM5
Auto Flight IntroductionAutopilot trim
•Uses the horizontal
stabilizer control
system to relieve
constant pressure
on elevator servo
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM6
Auto Flight IntroductionMach trim
•Controls horizontalstabilizer position
when autopilot is
not engaged
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM7
Auto Flight IntroductionRudder boost
•Automaticallyoperates when
extreme rudder-
pedal force is
needed to maintain
directional control
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM8
Auto Flight Overview
Auto flight introduction
Autopilot
•Flight directors
•Autopilot/yaw damper•Autopilot trim
Mach trim
Rudder boost
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM9
Autopilot ComponentsIC-600 integrated
avionics computers•Two IACs
communicate
with each other
via the IC bus
•Primary line
replaceable units
(LRUs) of
electronic
display system
•Control aircraft
and monitorfunctions
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM10
Autopilot ComponentsForward
interface unit•Contains numerous
relays related to
autopilot
•Contains the
ELEV/AP DISC and
AIL/AP DISC
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM11
Autopilot ComponentsServos
•Aileron
- Sized to allow 7°
per second roll
rate maneuver
by autopilot
•Elevator
- Sized to allow
0.3g maneuver
by autopilot
•Rudder
- Sized according
to rudder boostrequirements
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM12
Autopilot OperationFlight guidance
control unit•Prime controller
for flight director
and autopilot/yaw
damper
•Allows flight
director mode
selection, couple
status, and
autopilot/yaw
damper
engagementselection
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM13
Autopilot OperationDisplay controller
•Acquires data forthe FGCU
•Pushbutton
switches select
flight director
modes
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM14
Autopilot OperationControl wheel
•Trim switch
- Barrel portion
and center
arming button
- With autopilot
engaged, movingbarrel portion
controls pitch
and roll
- Pressing center
arming button
disengagesautopilot
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM15
Autopilot OperationControl wheel
•Master switch
- Immediately
disconnects all
autopilot and
yaw damper
servo drives
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM16
Autopilot OperationControl wheel
•Touch controlsteering switch
- While pressing
the switch, pilot
can manually fly
airplane without
disengaging
autopilot
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM17
Autopilot OperationGo-around button
•Disconnectsautopilot but not
yaw damper
•Cancels all other
vertical and lateral
modes except
automatic altitude
preselect arm
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM18
Autopilot OperationPFD indications
•Autopilot/flightdirector lateral
modes
- White armed
lateral modes
shown to left of
captured modes
- Green captured
modes
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM19
Autopilot OperationPFD indications
•Autopilot/flightdirector vertical
modes
- White armed
vertical modes
shown to right of
captured modes
- Green captured
modes
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM20
Autopilot OperationPFD AP TEST
indication•Autopilot in
test mode
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM21
Autopilot OperationPFD AP FAIL
indication•Autopilot failure
after test on
power-up
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM22
Autopilot OperationEICAS AP FAIL
indication •Autopilot failure
on power-up
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM23
Auto Flight Overview
Auto flight introduction
Autopilot
•Flight directors
•Autopilot/yaw damper•Autopilot trim
Mach trim
Rudder boost
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM24
Flight Director ControlsMode select
switchesannunciateactive modes
•Lateral modes
•Vertical modes
Automatic mode
LATERAL MODES VERTICAL MODES
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM25
Flight Director ControlsHeading (HDG)
select knob•Sets blue heading
select bug on both
PFDs
•PUSH SYNC allows
pilots to slew
heading bug to
compass card
lubber line
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM26
Flight Director ControlsCourse (CRS)
select knob•Sets selected
course for VOR and
localizer flight
director modes
•PUSH SYNC allows
pilots to slewcourse pointer on
top of appropriate
bearing pointer to
show zero
deviation path to
the station
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM27
Flight Director ControlsAltitude select knob
•Sets apreselected
altitude reference
in feet in
PFD altitude
display window
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM28
Flight Director ControlsXFR button
•Couples eitherpilot or copilot
flight director
to autopilot
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM29
Flight Director ControlsBank button (BNK)
•Allows pilot toselect reduced
maximum bank
angle for the
heading select
mode only
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM30
Flight Director ControlsFD1/FD2 buttons
•Display or removethe FD command
from view on PFD
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM31
Auto Flight Overview
Auto flight introduction
Autopilot
•Flight directors
•Autopilot/yaw damper•Autopilot trim
Mach trim
Rudder boost
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM32
Autopilot Operation Modes
Heading hold and wings level
Roll hold
Pitch attitude hold
Flight director couple and
lift compensation
Touch control steering
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L45 Mx Auto FlightM33
Autopilot/Yaw Damper Operation
Autopilot tracks steering commandsfrom coupled flight director
Autopilot control software not aware of
flight director modes Yaw damper software computes servo
commands based on sensor input data only
Autopilot/yaw damper has various integral
software monitors that check for correctsystem operation
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM34
Autopilot/Yaw Damper OperationAutopilot button (AP)
•Pushing buttonengages autopilot
and yaw damper
•Pushing button
with autopilot
and yaw damper
operating disengagesonly autopilot,
not yaw damper
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L45 Mx Auto FlightM35
Autopilot/Yaw Damper OperationYaw damper button
(YD)•Pushing button
engages yaw
damper only
•Pushing button
with autopilot
operatingdisengages
autopilot and
yaw damper
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM36
Auto Flight Overview
Auto flight introduction
Autopilot
•Flight directors
•Autopilot/yaw damper•Autopilot trim
Mach trim
Rudder boost
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM37
Autopilot Trim OverviewAutopilot processor
performs elevatortrim control basedon elevator servocurrent demand
Elevator trim
engagementcontrolled byautopilot engagelogic
Trim drive signalvaries as functionof airspeed
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM38
Auto Flight Overview
Auto flight introduction
Autopilot
•Flight directors
•Autopilot/yaw damper•Autopilot trim
Mach trim
Rudder boost
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L45 Mx Auto FlightM39
Mach Trim ComponentsNo. 1 IC-600
computer•Provides manual
trim, Mach, and
configuration trim
functionality
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM40
Mach Trim ComponentsStabilizer actuator
control box•Controls and
monitors stabilizer
•Contains pilot and
copilot control
wheel master
disconnectfunctions
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L45 Mx Auto FlightM41
Mach Trim ComponentsStabilizer actuator
•Moves horizontalstabilizer
•Primary section
- Provides
configuration/
Mach trim
capability
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L45 Mx Auto FlightM42
Mach Trim ComponentsForward
interface unit•Provides
multiplexing
function for
control wheel trim
and master
switchesdisconnect signals
•Maintains
separation of pilot
and copilot control
wheel master
switch functions
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM43
Mach Trim ComponentsNo. 1 and 2 micro
air data computers•Provide air data
to IC-600 for
Mach number
computations
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM44
Mach Trim ComponentsTrim system
select switch•Selects operable
trim system
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L45 Mx Auto FlightM45
Mach Trim OperationConfiguration
trim system•#1 IC-600 software
provides control
and monitoring
functions
•Adjusts stabilizer
position relative toflap and spoiler
movement
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7/28/2019 L45 M 22 Auto FlightFam
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L45 Mx Auto FlightM46
Auto Flight Overview
Auto flight introduction
Autopilot
•Flight directors
•Autopilot/yaw damper•Autopilot trim
Mach trim
Rudder boost
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L45 Mx Auto FlightM47
Rudder Boost Overview
Assists crew when extreme rudder-pedal force required to maintain
direction control
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L45 Mx Auto FlightM48
Rudder Boost ComponentsRudder boost system
automaticallyactivates when all of the following occur:
•Flaps >3° or
aircraft on
the ground
•Dynamic pressure<95 psf
•System does not
detect fault
•System not
selected OFF
•Sum of pilot and/orcopilot forces is
>30 lbs
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L45 Mx Auto FlightM49
Rudder Boost ComponentsRudder pedal
force sensors•Strain-gauge type
sensors measure
rudder pedal force
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L45 Mx Auto FlightM50
Rudder Boost ComponentsForward interface
unit•Transfers voltage
from the No.
IC-600 to the
rudder boost
arm switch
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L45 Mx Auto FlightM51
Rudder Boost ComponentsYaw force
interface box•Provides signal
conditioning of
rudder pedal-force
sensor outputs
•Transmits necessary
excitation voltageto each channel of
force link sensors
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L45 Mx Auto FlightM52
Rudder Boost ComponentsNo. 2 IC-600
computer•Handles all rudder
boost and yaw
damper system
computations
•Rudder boost
disables yawdamper when
pedal force
exceeds threshold
value
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L45 Mx Auto FlightM53
Rudder Boost ComponentsYaw servo
•Applies torque torudder shaft
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L45 Mx Auto FlightM54
Questions?
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