a380-Level i - Ata 36 Pneumatic

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A380

TECHNICAL TRAINING

TECHNICAL TRAINING MANU

MANUAL

AL

MAINTENANCE COURSE - T1 & T2 (RR / Metric)

LEVEL I - ATA 36 Pneumatic

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This document must be used for training purposes only This document must be used for training purposes only

Under no circumstances should this document be used as a reference Under no circumstances should this document be used as a reference

It will not be updated. It will not be updated.

No part of this manual may be reproduced in any form, No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, by photostat, microfilm, retrieval system, or any other means,

without the prior written permission of AIRBUS S.A.S. without the prior written permission of AIRBUS S.A.S.

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LEVEL I - ATA 36 PNEUMATIC

Pneumatic System Introduction

Pneumatic System Introduction . . . .. . . . 22

Pneuma

Pneumatic Air Distributitic Air Distribution System Presentatioon System Presentation n . . . .. . . 44

Engine Bleed

Engine Bleed Air System PresenAir System Presentation tation . . . .. . . 1010

OverH

OverHeat Detectioeat Detection System Presentn System Presentation ation . . . .. . . . 1616

Pneuma

Pneumatic System Maintenanctic System Maintenance (1) e (1) . . . .. . . 2020

MAINTENANCE COURSE - T1 & T2 (RR / Metric)

LEVEL I - ATA 36 Pneumatic

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A380 TECHNICAL TRAINING MANUAL

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PNEUMATIC SYSTEM INTRODUCTION

General General

The Pneumatic system is composed of three sub-systems: The Pneumatic system is composed of three sub-systems: - the Pneumatic Air Distri

- the Pneumatic Air Distri bution System (PADS),bution System (PADS),

- the Engine Bleed Air System (EBAS), - the Engine Bleed Air System (EBAS), -the OverHeat Detection System (OHDS), -the OverHeat Detection System (OHDS),

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GENERAL

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PNEUMA

TIC AIR D

ISTRIBUTION

SYSTEM

PRESENTA

TION

Pneumatic Air Distribution System overview Pneumatic Air Distribution System overview

The Pneumatic Air Distribution System (PADS) collects compressed air The Pneumatic Air Distribution System (PADS) collects compressed air from the various bleed air sources and supply it to the aircraft users. from the various bleed air sources and supply it to the aircraft users. Air Sources

Air Sources The air sources are: The air sources are: - the four engines, - the four engines, - the APU and, - the APU and,

- a ground air source via the three High Pressure Ground Connectors. - a ground air source via the three High Pressure Ground Connectors. Users

Users

The Users of the pneumatic system are: The Users of the pneumatic system are:

- the Air Conditioning System for hot air feed and unpressurized bay - the Air Conditioning System for hot air feed and unpressurized bay ventilation,

ventilation,

- the Wing Anti-Ice System, - the Wing Anti-Ice System, - the Engine Starting System to g

- the Engine Starting System to g ive compressed air to the engine startersive compressed air to the engine starters

and, and,

- the Hydraulic System for reservoir pressurization. - the Hydraulic System for reservoir pressurization. P

PADS componentADS component ss

The main components of the PADS are: The main components of the PADS are: - the crossbleed manifold,

- the crossbleed manifold,

- the three crossbleed valves (left, center and right,) - the three crossbleed valves (left, center and right,) - the APU isolation valve and,

- the APU isolation valve and, - the HP ground connectors. - the HP ground connectors.

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PNEUMA

PNEUMATIC AIR TIC AIR DISTRIBUTION SYSTEM DISTRIBUTION SYSTEM OVEROVERVIEWVIEW

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PNEUEUMAMATITIC AC AIR DIIR DISTSTRIRIBUBUTITION SON SYSYSTETEM PRM PRESESENENTTAATITIONON MaMar 15r 15, 20, 200606

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PNEUMA

TIC AIR D

ISTRIBUTION

SYSTEM

PRESENTA

TION

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PADS Control and ADS Control and IndicatingIndicating

The PADS controls are located on

The PADS controls are located on the AIR Pthe AIR PANEL (1225VM).ANEL (1225VM).

These controls are: These controls are:

- the CROSSBLEED selector and, - the CROSSBLEED selector and, - the APU BLEED

- the APU BLEED P/BSWP/BSW..

Indications concerning the PADS are displayed on the ECAM BLEED Indications concerning the PADS are displayed on the ECAM BLEED PAGE.

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PADS CONTROL AND INDICATING

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PNEUMA

TIC AIR D

ISTRIBUTION

SYSTEM

PRESENTA

TION

Crossbleed System Crossbleed System

All the air sources are connected to the crossbleed manifold. Three All the air sources are connected to the crossbleed manifold. Three crossbleed valves are used to isolate the left hand and right hand bleed crossbleed valves are used to isolate the left hand and right hand bleed systems and also each engine bleed system when required.

systems and also each engine bleed system when required.

The APU and the HP ground connectors are connected to the left hand The APU and the HP ground connectors are connected to the left hand side of the crossbleed manifold.

side of the crossbleed manifold.

System control System control

The crossbleed valves control is done by a PADS application hosted The crossbleed valves control is done by a PADS application hosted in the four CPIOMs-A.

in the four CPIOMs-A.

The crossbleed selector located on the overhead panel is used to choose The crossbleed selector located on the overhead panel is used to choose the control mode of the valves.

the control mode of the valves. Three modes are available: Three modes are available:

- the manual OPEN mode, to open the three crossbleed valves - the manual OPEN mode, to open the three crossbleed valves manually,

manually,

- the manual CLOSE mode, to close the three valves manually and, - the manual CLOSE mode, to close the three valves manually and, - the AUTO mode, to use an automatic control of the valves by the - the AUTO mode, to use an automatic control of the valves by the four CPIOM-A.

four CPIOM-A.

Note that in normal operation, the selector is on the AUTO position. Note that in normal operation, the selector is on the AUTO position.

APU Bleed system APU Bleed system

The APU bleed duct is connected to the left hand side of the crossbleed The APU bleed duct is connected to the left hand side of the crossbleed manifold.

manifold.

The APU isolation valve allows compressed air from the APU to go to The APU isolation valve allows compressed air from the APU to go to the crossbleed manifold.

the crossbleed manifold.

System control System control

When you need APU bleed air supply, press the APU BLEED When you need APU bleed air supply, press the APU BLEED pushbutton switch located on the AIR panel (1225VM). The signal pushbutton switch located on the AIR panel (1225VM). The signal is received by the 4 CPIOMs-A, which command the APU isolation is received by the 4 CPIOMs-A, which command the APU isolation valve to open. At the same time, the Electronic Control Box (ECB) valve to open. At the same time, the Electronic Control Box (ECB) opens the APU bleed valve.

opens the APU bleed valve.

Airflow coming from the APU is regulated and can be used directly Airflow coming from the APU is regulated and can be used directly by the users.

by the users.

Ground Compressed air supply Ground Compressed air supply

An alternative compressed air source is available when th

An alternative compressed air source is available when th e aircraft in one aircraft in on

the ground. A ground air source can supply pressurized, temperature the ground. A ground air source can supply pressurized, temperature regulated and flow regulated air to the aircraft via three High Pressure regulated and flow regulated air to the aircraft via three High Pressure Ground Connectors, located in at the bottom of the belly fairing. Ground Connectors, located in at the bottom of the belly fairing. The HP Ground Connectors are connected to a common duct, connected The HP Ground Connectors are connected to a common duct, connected onto the left hand side of the crossbleed manifold.

onto the left hand side of the crossbleed manifold.

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CROSSBLEED SYSTEM ... GROUND

CROSSBLEED SYSTEM ... GROUND COMPRESSED AIR SUPPLYCOMPRESSED AIR SUPPLY

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ENGINE B

LEED AIR SYSTEM

PRESENTA

TION

General General

Engine Bleed Air is the main compressed air source during flight. It Engine Bleed Air is the main compressed air source during flight. It supplies pressure and temperature regulated air to the Pneumatic Air supplies pressure and temperature regulated air to the Pneumatic Air Distribution System

Distribution System (P(PADS).ADS).

On each engine, air is bled from either an Intermediate Pressure (IP) port On each engine, air is bled from either an Intermediate Pressure (IP) port or a High Pressure (HP) port on the engine compressor.

or a High Pressure (HP) port on the engine compressor.

The engine bleed IP/HP selection system selects the appropriate bleed The engine bleed IP/HP selection system selects the appropriate bleed port according to engine operation parameters.

port according to engine operation parameters.

Then, the engine bleed pressure control system regulates the bleed Then, the engine bleed pressure control system regulates the bleed pressure according to the users bleed demand.

pressure according to the users bleed demand.

Finally, the engine bleed temperature control system cools the bleed air Finally, the engine bleed temperature control system cools the bleed air using fan air.

using fan air.

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GENERAL

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ENGINE B

LEED AIR SYSTEM

PRESENTA

TION

Engine Bleed Control and Indicating Engine Bleed Control and Indicating

The EBAS controls are located on the AIR panel (1225VM). These The EBAS controls are located on the AIR panel (1225VM). These controls are the four ENGine BLEED pushbutton switches. controls are the four ENGine BLEED pushbutton switches.

Indications concerning the EBAS are displayed on the ECAM BLEED Indications concerning the EBAS are displayed on the ECAM BLEED page.

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ENGINE BLEED

ENGINE BLEED CONTROL AND INDICACONTROL AND INDICATINGTING

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ENGINE B

LEED AIR SYSTEM

PRESENTA

TION

Engine Bleed Functions Engine Bleed Functions

Engine Bleed Air System is controlled automatically by the EBAS Engine Bleed Air System is controlled automatically by the EBAS application hosted in the four CPIOMs-A.

application hosted in the four CPIOMs-A.

It is possible to switch off one or several engine bleed system(s) by It is possible to switch off one or several engine bleed system(s) by releasing out the corresponding ENGine BLEED pushbutton switch. releasing out the corresponding ENGine BLEED pushbutton switch.

Engine Bleed Port Selection Engine Bleed Port Selection

Engine bleed port selection is achieved through the HP Bleed Valve Engine bleed port selection is achieved through the HP Bleed Valve and the

and the IP Bleed Check Valve.IP Bleed Check Valve.

Using Pressure sensors feedback, the EBAS application of the Using Pressure sensors feedback, the EBAS application of the CPIOM-A opens or closes the HP

CPIOM-A opens or closes the HP Bleed valve depending on the BleedBleed valve depending on the Bleed

demand and the pressure available at the IP port. demand and the pressure available at the IP port.

Most of the time, air is bled from the IP port. The HP port is used Most of the time, air is bled from the IP port. The HP port is used when the engine is running at low-rating and the IP pressure is not when the engine is running at low-rating and the IP pressure is not sufficient to meet the user demand at such rate.

sufficient to meet the user demand at such rate.

Engine Bleed Air Pressure Control Engine Bleed Air Pressure Control

The Bleed Valve and the Overpressure Valve (OPV) ensure eng

The Bleed Valve and the Overpressure Valve (OPV) ensure eng ineine

bleed pressure control. bleed pressure control.

Using Pressure sensors feedback, the EBAS application of the Using Pressure sensors feedback, the EBAS application of the CPIOM-A modulates the Bleed Valve position in order to reach the CPIOM-A modulates the Bleed Valve position in order to reach the user pressure demand.

user pressure demand.

The OPV protects the system against overpressure in case of EBAS The OPV protects the system against overpressure in case of EBAS failure.

failure.

Engine Bleed Air Temperature Control Engine Bleed Air Temperature Control

The Fan Air Valv

The Fan Air Valve (FAe (FAV) ensures V) ensures engine bleed engine bleed temperature control.temperature control.

Using temperature sensor feedback, the EBAS application hosted in Using temperature sensor feedback, the EBAS application hosted in the CPIOMs-A modulates fan airflow through the pre-cooler heat the CPIOMs-A modulates fan airflow through the pre-cooler heat exchanger to cool down the bleed air to the correct temperature. exchanger to cool down the bleed air to the correct temperature.

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ENGINE BLEED FU

ENGINE BLEED FUNCTIONS - ENGINE NCTIONS - ENGINE BLEED PORT SELECTION ... ENGINE BLEED PORT SELECTION ... ENGINE BLEED AIR TEMPERABLEED AIR TEMPERATURE CONTROLTURE CONTROL

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OVERHEA

T D

ETECTION

SYSTEM

PRESENTA

TION

System

System architecturarchitecturee

The OverHeat Detection System (OHDS) detection loops are located The OverHeat Detection System (OHDS) detection loops are located along the pneumatic system duct network and around some air along the pneumatic system duct network and around some air conditioning system components.

conditioning system components.

Each of the monitored area is equipped with

Each of the monitored area is equipped with dual detection loops (A loopsdual detection loops (A loops

and B loops). and B loops).

Dual detection loops are installed: Dual detection loops are installed: - on each engine pylon,

- on each engine pylon, - on the wings bleed ducts, - on the wings bleed ducts, - on the inner wings bleed ducts, - on the inner wings bleed ducts,

- in the left and right Air Generation Unit (AGU) bays, - in the left and right Air Generation Unit (AGU) bays, - on the upper and lower trim air ducts,

- on the upper and lower trim air ducts, - in the crossbleed valve area,

- in the crossbleed valve area, - and on the APU bleed duct. - and on the APU bleed duct.

Each detection loop is composed of sensin

Each detection loop is composed of sensin g elements connected in series.g elements connected in series.

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SYSTEM ARCHITECTURE

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OVERHEA

T D

ETECTION

SYSTEM

PRESENTA

TION

Loop Monitoring Loop Monitoring

Two OverHeat Detection Units (OHDU) monitor the detection loops. Two OverHeat Detection Units (OHDU) monitor the detection loops. They are located in the left and right avionics bay racks (2300VU and They are located in the left and right avionics bay racks (2300VU and 2400 VU).

2400 VU).

If a leak is detected, the OHDU sends a signal to the CPIOM-A. Then, If a leak is detected, the OHDU sends a signal to the CPIOM-A. Then, the OHDS application hosted in the CPIOM-A triggers appropriat

the OHDS application hosted in the CPIOM-A triggers appropriat e valvee valve

closure and sends a leak message to the Flight Warning System (FWS), closure and sends a leak message to the Flight Warning System (FWS), to the Control and Display System (CDS) for indication and to the to the Control and Display System (CDS) for indication and to the Onboard Maintenance System (OMS) for leak localization. Onboard Maintenance System (OMS) for leak localization.

If a leak is detected, fault lights illuminate on the corresponding BLEED If a leak is detected, fault lights illuminate on the corresponding BLEED pushbutton on the AIR panel (1225VM).

pushbutton on the AIR panel (1225VM).

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LOOP MONITORING

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PNEUMATIC SYSTEM MAINTENANCE (1)

Pneumatic System safety items Pneumatic System safety items

Here is an overview of main safety precautions relative to the pneumatic Here is an overview of main safety precautions relative to the pneumatic system.

system.

Make sure that the pneumatic system is depressurized

Make sure that the pneumatic system is depressurized before starting thebefore starting the

work, pressurized air can cause unwanted pressurization of the aircraft, work, pressurized air can cause unwanted pressurization of the aircraft, and injury to personnel.

and injury to personnel.

Parts can be hot for 1 hour after engine shutdown. Do not touch them Parts can be hot for 1 hour after engine shutdown. Do not touch them until they are sufficiently cool.

until they are sufficiently cool.

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PNEUMA

PNEUMATIC SYSTEM TIC SYSTEM SAFETY ITEMSSAFETY ITEMS

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STM STM REFERENCE L0Y06082 REFERENCE L0Y06082 MARCH 2006 MARCH 2006 PRINTED IN FRANCE PRINTED IN FRANCE AIRBUS S.A.S. 2006 AIRBUS S.A.S. 2006 ALL RIGHTS RESERVED ALL RIGHTS RESERVED AN EADS JOINT COMPANY AN EADS JOINT COMPANY

WITH BAE SYSTEMS WITH BAE SYSTEMS