L45 M 22 Auto FlightFam

7/28/2019 L45 M 22 Auto FlightFam

http://slidepdf.com/reader/full/l45-m-22-auto-flightfam 1/55

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

modes




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

modes

- White armed

lateral modes

shown to left of

captured modes

- Green captured

modes




Autopilot OperationPFD indications

•Autopilot/flightdirector vertical

modes

- White armed

vertical modes

shown to right of

captured modes

- Green captured

modes




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

PFDs

•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

value




Rudder Boost ComponentsYaw servo

•Applies torque torudder shaft




Questions?



Documents

L45 M 22 Auto FlightFam