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The ADR part provides various air data to the
Flight Management and Guidance Computers
(FMGC) and other users.
The air data provided include; Mach,
Airspeed, Temperature, Overspeed warnings,
barometric altitude, and angle of attack.
NAVIGATION MENU
ADIRS presentation 9/45
INERTIAL
REFERENCE
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The IR part provides inertial data to the
FMGC, EFIS and other users. The inertial data
provided include : Track, Heading, Acceleration,
Flight Path Vector, Airplane Position, Ground
speed and Attitude.
NAVIGATION MENU
ADIRS presentation 10/45
The three ADIRS are controlled through the
ADIRS panel located on the overhead panel.
NAVIGATION MENU
ADIRS presentation 11/45
Their initialization is done through the two
MCDU located on the pedestal.
NAVIGATION MENU
ADIRS presentation 12/45
And by two of the switches on the SWITCHING
panel located at the front of the pedestal.
NAVIGATION MENU
ADIRS presentation 13/45
ADIRU 1 ADIRU 3 ADIRU 2
Independent data are supplied by each ADIRU.
Let’s see an example of this.
NAVIGATION MENU ADIRS presentation 14/45
ADIRU 1 ADIRU 3 ADIRU 2
NAVIGATION MENU
ADIRS presentation 15/45
In the EFIS system ADIRU 1 supplies the
captain’s EFIS, and ADIRU 2 supplies the first
officer’s EFIS.
ADIRU 1 ADIRU 3 ADIRU 2
NAVIGATION MENU ADIRS presentation 16/45
ADIRU 1 ADIRU 3 ADIRU 2
NAVIGATION MENU
ADIRS presentation 17/45
ADIRU 3 is available as a stand-by to either
EFIS system via the switching panel. Use of the
switching panel will be covered in the abnormal
section.
ADIRU 1 ADIRU 3 ADIRU 2
NAVIGATION MENU
ADIRS presentation 18/45
Noow lleett’’ss llooookk aatt tthhee ADIIRS Coonnttrrooll Diissppllaayy Unniitt..
NAVIGATION MENU
ADIRS presentation 19/45
Inertial Reference
Section
Air Data Reference
Section
ADIRS
Selectors
The panel is divided into two parts. The upper
section for the IR and the lower section for the
ADR.
The three rotary mode selectors have control
over both the IR and the ADR.
NAVIGATION MENU
ADIRS presentation 20/45
ADIRU1 ADIRU3 ADIRU2
The controls and indicators for the individual
ADIRU are grouped and arranged in the order of
1,3 and 2.
NAVIGATION MENU ADIRS presentation 21/45
NAVIGATION MENU
ADIRS presentation 22/45
Each ADIRU has an associated IRS rotary mode selector.
In the ‘OFF’ position, the ADIRU is not energized, so ADR and IR data are not available. The three
ADR switches normally remain on, but they can be selected off in response to ECAM procedures.
In the ‘NAV’ position the ADIRS are energized. The ‘NAV’ position is the normal mode of
operation and full inertial data is provided to the aircraft systems.
NAVIGATION MENU
ADIRS presentation 23/45
The ON BAT light illuminates to inform the crew that the
ADIRU system is being powered by aircraft battery only.
The light also illuminates for a few seconds at the
beginning of a full alignment as a test of the battery circuit.
We will discuss this further in Normal and Abnormal operation
modules.
ALIGN ALIGN ALIGN
NAVIGATION MENU ADIRS presentation 24/45
ALIGN ALIGN ALIGN
NAVIGATION MENU
ADIRS presentation 25/45
Each Inertial Reference Unit has an associated indicator.
The ALIGN light illuminates steady white when the
respective IRU is operating normally in ALIGN sequence mode.
ALIGN ALIGN ALIGN
NAVIGATION MENU ADIRS presentation 26/45
NAVIGATION MENU ADIRS presentation 27/45
NAVIGATION MENU
ADIRS presentation 28/45
The ALIGN light flashes white if :
• There is an IRU alignment fault,
• No present position entry has been made after 10 minutes,
• The difference between the position at shutdown and the
entered position exceeds 1 degree of latitude or longitude.
NAVIGATION MENU
ADIRS presentation 29/45
Present position information for ADIRS alignment is
normally entered via the INIT page of the MCDU.
This method will be explained in the normal operation
module.
ADIRU 1
ADIRU 3
ADIRU 2
NAVIGATION MENU ADIRS presentation 30/45
NAVIGATION MENU ADIRS presentation 31/45
NAVIGATION MENU ADIRS presentation 32/45
NAVIGATION MENU
ADIRS presentation 33/45
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空客a320飞机概述2(63)
