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It’s a combined VOR/ADF/DME RMI.
Note: Some DDRMIs are not equipped with the ADF
capability.
NORMAL OPERATION
The DME 1 Distance is displayed in the left hand window.
The DME 2 Distance is displayed in the right hand
window.
A single pointer indicates the VOR 1 or ADF 1 bearing.
A double pointer indicates the VOR 2 or ADF 2 bearing.
The selection of VOR or ADF is provided for each pointer
by a selector switch.
TMUNAVF02-T01 LEVEL 1
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DDRMI PRESENTATION - NORMAL OPERATION
TMUNAVF02-P01 LEVEL 1
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DDRMI PRESENTATION
FAILURE AND NON COMPUTED DATA (NCD)
When a failure is detected by the DME or RMI monitoring
circuits, the corresponding DME display window is
blanked.
In case of Non Computed Data (NCD), for example:
- out-of-range station, the window shows white
horizontal dashed lines.
Heading information normally comes from ADIRU 1.
If it fails, the heading is provided by ADIRU 3 after
pilot switching.
In case of VOR or ADF 1 or 2 receiver failure, a red
flag comes into view and the corresponding pointer is
set to the 3 o’clock position.
In case of Non Computed Data (NCD), no failure flag
appears, but the corresponding pointer is set to the
3 o’clock position.
TMUNAVF02-T02 LEVEL 1
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TMUNAVF02-P02 LEVEL 1
DDRMI PRESENTATION - FAILURE AND NON COMPUTED DATA (NCD)
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SELF EXAMINATION
From which ADIRU can the DDRMI receive information ?
A - ADIRU 1 or 2.
B - ADIRU 2 or 3.
C - ADIRU 1 or 3.
TMUNAVF02 LEVEL 1
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34 - NAVIGATION
34-10-00 ADIRS PRINCIPLE
CONTENTS:
General
ADM Functional Description
ADM Inputs
ADM Output
ADR Computation
IR Strapdown
Ring Laser Gyro
Accelerometer
IR Computation
TMUADI001 LEVEL 1
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ADIRS PRINCIPLE
GENERAL
The Air Data/Inertial Reference Unit (ADIRU) comprises
an Air Data Reference Unit and an Inertial Reference
Unit, both included in a single unit.
Data from external sensors (Angle of Attack, Total Air
Temperature, Air Data Module) are used by the ADIRU.
The ADIRUs are interfaced with the ADIRS Display
Control Unit (CDU) for control and status annunciation.
TMUADI001-T01 LEVEL 1
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ADIRS PRINCIPLE - GENERAL
TMUADI001-P01 LEVEL 1
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ADIRS PRINCIPLE
ADM FUNCTIONAL DESCRIPTION
A microcomputer processes an ARINC signal according
to the discrete inputs and to the digitized pressure.
ADM INPUTS
The ADM Inputs are one pressure input and several
discrete inputs.
The ADMs are identical.
The discrete inputs determine the ADM location and the
type of pressure data (Pitot or Static) provided to
the ADR.
ADM OUTPUT
The ADM output is an ARINC bus which provides digital
pressure information, type of pressure, ADM
identification and BITE status to the ADIRU.
TMUADI001-T02 LEVEL 1
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