L45 M 22 Auto FlightFam

7/28/2019 L45 M 22 Auto FlightFam

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Auto Flight

L45 Mx Auto FlightM2

Auto Flight Overview

Auto flight introduction

Autopilot

•Flight directors

•Autopilot/yaw damper•Autopilot trim

Mach trim

Rudder boost

Auto Flight IntroductionFlight directors

•Controls lateral

and vertical

command bars on

primary flight

display (PFD)

Auto Flight IntroductionAutopilot/yaw

damper•Contained within

the No. 2 IC-600

integrated

computer

•Controls aircraft

via servo control of

elevators, ailerons,

and rudder

Auto Flight IntroductionAutopilot trim

•Uses the horizontal

stabilizer control

system to relieve

constant pressure

on elevator servo

Auto Flight IntroductionMach trim

•Controls horizontalstabilizer position

when autopilot is

not engaged

Auto Flight IntroductionRudder boost

•Automaticallyoperates when

extreme rudder-

pedal force is

needed to maintain

directional control

Autopilot

•Flight directors

Mach trim

Rudder boost

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

Autopilot ComponentsForward

interface unit•Contains numerous

relays related to

autopilot

•Contains the

ELEV/AP DISC and

AIL/AP DISC

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

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

Autopilot OperationDisplay controller

•Acquires data forthe FGCU

•Pushbutton

switches select

flight director

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

•Master switch

- Immediately

disconnects all

autopilot and

yaw damper

servo drives

•Touch controlsteering switch

- While pressing

the switch, pilot

can manually fly

airplane without

disengaging

autopilot

Autopilot OperationGo-around button

•Disconnectsautopilot but not

yaw damper

•Cancels all other

vertical and lateral

modes except

automatic altitude

preselect arm

Autopilot OperationPFD indications

•Autopilot/flightdirector lateral

- White armed

lateral modes

shown to left of

captured modes

- Green captured

Autopilot OperationPFD indications

•Autopilot/flightdirector vertical

- White armed

vertical modes

shown to right of

captured modes

- Green captured

Autopilot OperationPFD AP TEST

indication•Autopilot in

test mode

Autopilot OperationPFD AP FAIL

indication•Autopilot failure

after test on

power-up

Autopilot OperationEICAS AP FAIL

indication •Autopilot failure

on power-up

Autopilot

•Flight directors

Mach trim

Rudder boost

Flight Director ControlsMode select

switchesannunciateactive modes

•Lateral modes

•Vertical modes

Automatic mode

LATERAL MODES VERTICAL MODES

Flight Director ControlsHeading (HDG)

select knob•Sets blue heading

select bug on both

•PUSH SYNC allows

pilots to slew

heading bug to

compass card

lubber line

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

Flight Director ControlsAltitude select knob

•Sets apreselected

altitude reference

in feet in

PFD altitude

display window

Flight Director ControlsXFR button

•Couples eitherpilot or copilot

flight director

to autopilot

Flight Director ControlsBank button (BNK)

•Allows pilot toselect reduced

maximum bank

angle for the

heading select

mode only

Flight Director ControlsFD1/FD2 buttons

•Display or removethe FD command

from view on PFD

Autopilot

•Flight directors

Mach trim

Rudder boost

Autopilot Operation Modes

Heading hold and wings level

Roll hold

Pitch attitude hold

Flight director couple and

lift compensation

Touch control steering

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

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

Autopilot/Yaw Damper OperationYaw damper button

(YD)•Pushing button

engages yaw

damper only

•Pushing button

with autopilot

operatingdisengages

autopilot and

yaw damper

Autopilot

•Flight directors

Mach trim

Rudder boost

Autopilot Trim OverviewAutopilot processor

performs elevatortrim control basedon elevator servocurrent demand

Elevator trim

engagementcontrolled byautopilot engagelogic

Trim drive signalvaries as functionof airspeed

Autopilot

•Flight directors

Mach trim

Rudder boost

Mach Trim ComponentsNo. 1 IC-600

computer•Provides manual

trim, Mach, and

configuration trim

functionality

Mach Trim ComponentsStabilizer actuator

control box•Controls and

monitors stabilizer

•Contains pilot and

copilot control

wheel master

disconnectfunctions

Mach Trim ComponentsStabilizer actuator

•Moves horizontalstabilizer

•Primary section

- Provides

configuration/

Mach trim

capability

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

Mach Trim ComponentsNo. 1 and 2 micro

air data computers•Provide air data

to IC-600 for

Mach number

computations

Mach Trim ComponentsTrim system

select switch•Selects operable

trim system

Mach Trim OperationConfiguration

trim system•#1 IC-600 software

provides control

and monitoring

functions

•Adjusts stabilizer

position relative toflap and spoiler

movement

Autopilot

•Flight directors

Mach trim

Rudder boost

Rudder Boost Overview

Assists crew when extreme rudder-pedal force required to maintain

direction control

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

Rudder Boost ComponentsRudder pedal

force sensors•Strain-gauge type

sensors measure

rudder pedal force

Rudder Boost ComponentsForward interface

unit•Transfers voltage

from the No.

IC-600 to the

rudder boost

arm switch

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

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

Rudder Boost ComponentsYaw servo

•Applies torque torudder shaft

Questions?

L45 M 22 Auto FlightFam

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