Bombardier CRJ 00-Hydraulic Power
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Transcript of Bombardier CRJ 00-Hydraulic Power
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REV 56, J an 31/03HYDRAULIC POWER
Table of Contents
FlightCrew Operating Manual
CSP A--013
MASTER
CHAPTER 14 --- HYDRAULIC POWER
Page
TABLE OF CONTENTS 14--00Table of Contents 14--00--1
INTRODUCTION 14--10
Introduction 14--10--1
SYSTEMS 1 AND 2 14--20
Hydraulic Systems No.1 and No.2 14--20--1
Engine Driven Pumps 14--20--4
AC Motor Pumps (ACMP) 14--20--4
Hydraulic Shutoff Valves 14--20--5
Reservoir 14--20--5
Accumulator 14--20--5
System Circuit Breakers 14--20--8
SYSTEM 3 14--30
Hydraulic System No.3 14--30--1
AC Motor Pumps 14--30--3
System Circuit Breakers 14--30--6
LIST OF ILLUSTRATIONS
INTRODUCTIONFigure 14--10--1 Hydraulic Systems Diagram 14--10--2
Figure 14--10--2 Hydraulic Systems Overview 14--10--3
SYSTEMS 1 AND 2Figure 14--20--1 Hydraulic Systems 1 and 2 Schematic 14--20--2
Figure 14--20--2 Hydraulic Control P anel 14--20--4
Figure 14--20--3 Systems 1 and 2 -- Synoptic P age 14--20--6
Figure 14--20--4 Systems 1 and 2 -- EICAS Indications 14--20--7
SYSTEM3F igure 14--30--1 Hydraulic S ystem3 -- S chematic 14--30--2
Figure 14--30--2 Hydraulic Control P anel 14--30--3
Figure 14--30--3 System 3 -- Synoptic Page 14--30--4
Figure 14--30--4 System 3 -- EICAS Indications 14--30--5
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Table of Contents
MASTERFlightCrew Operating Manual
CSP A--013
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Introduction
FlightCrew Operating Manual
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MASTER
1. INTRODUCTION
Hydraulic power is provided by three independent systems designated No.1, No.2 and No.3.All systems operate at a nominal pressure of 3000 psi (20,685 kPa) and use synthetichydraulic fluid Skydrol.
WARNING
Skydrol is highly corrosive and can produce severeskin and eye irritation.
Systems 1 and 2 are serviced by ground service panels located in the aft equipmentcompartment. System3 is serviced by a ground service panel located on the right side ofthe fuselage, aft of the wing root.
Each systemhas two hydraulic pumps; a main pump (A) for normal power and a backuppump (B) for supplementary power. System No.1 and 2 main pumps are engine drivenpumps (EDPs). System1 EDP (1A) is driven by the left engine and system2 EDP (2A) isdriven by the right engine. System1 and 2 backup pumps (1B and 2B) are electrical ACmotor pumps (ACMPs). Both hydraulic pumps for system No.3 are ACMP s. In systemNo.3, the main pump (3A) normally runs continuously, while the backup pump (3B) isavailable during periods of high flow requirements.
The hydraulic systems supply power to operate the rudder, elevators, ailerons, spoilerons,flight spoilers, ground spoilers, wheel brakes, nosewheel steering and landing gearextension and retraction. The rudder, elevators and ailerons are powered by more than onehydraulic system to prevent loss of critical flight controls.
During a total AC power failure in flight, pump 3B will be automatically powered by the airdriven generator (ADG) when it is deployed. This will provide hydraulic pressure to thelanding gear, brakes and nosewheel steering and also provides backup hydraulic pressureto the primary flight controls.
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Introduction
MASTERFlightCrew Operating Manual
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Hydraulic Systems DiagramFigure 14---10---1
LEFT SPOILERON
RUDDER
LEFT AND RIGHTELEVATORS
NO. 1 SYSTEM
AC MOTORPUMP (1B)
ENGINEDRIVEN
PUMP (1A)
LEFT AND RIGHTOUTBOARD
GROUND SPOILERS
LEFT AND RIGHTAILERON
RUDDER
LEFT AND RIGHTELEVATORS
LEFT AND RIGHTINBOARD BRAKES
MAIN AND NOSE
LANDING GEAR
NOSEWHEELSTEERING
RIGHT AILERON
RUDDER
LEFT AND RIGHTELEVATORS
LEFT AND RIGHTFLIGHT
SPOILERS
MLG DOWNLOCKASSIST
ACTUATORS
LEFT AND RIGHTINBOARD GROUND
SPOILERS
LEFT AND RIGHTOUTBOARD BRAKES
NO. 3 SYSTEM
AC MOTORPUMP (3B)
NO. 2 SYSTEM
AC MOTORPUMP (2B)
ENGINEDRIVEN
PUMP (2A)
AC MOTORPUMP (3A)
LEFT AILERON
LEFT AND RIGHTFLIGHT SPOILERS
LEFT AND RIGHTSPOILERONS
RIGHT SPOILERON
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Hydraulic Systems OverviewFigure 14--10--2
NOSE LANDINGGEAR & STEERINGAND BRAKE CONTROL
MAIN LANDINGGEAR & INBD
BRAKES
OUTBDBRAKES
AILERON
SPOILERON
FLIGHTSPOILER OUTBDGROUNDSPOILER
INBDGROUNDSPOILER
No. 1ENGINEDRIVENPUMP
LEGEND
SYSTEM 1
SYSTEM 2
SYSTEM 3
RUDDER
No. 3AAC MOTORPUMP
No. 1BAC MOTORPUMP
No. 2ENGINEDRIVEN
PUMP
No. 3BAC MOTORPUMP
No. 2BAC MOTORPUMP
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Systems 1 and 2
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MASTER
1. HYDRAULIC SYSTEMS NO.1 AND NO.2
Each hydraulic system consists of the following components:
S Engine driven pump (EDP)
S AC motor pump (ACMP)
S Shutoff valve
S Reservoir
S Accumulator
S Pressure and return manifolds
S Filters
S Ground servicing panel.
Both No.1 and No.2 systems share a ramair heat exchanger for fluid cooling. Fluid fromeach system is not mixed with the other system as it passes through the heat exchanger. Afan within the heat exchanger assists in cooling the hydraulic fluid when the aircraft is on theground.
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Hydraulic Systems 1 and 2 SchematicFigure 14---20---1 Sheet 1
PP
S S
T
RETURNFILTER
RETURNMANIFOLD
BYPASSVALVE
GROUNDSERVICENITROGEN
ACCUMULATOR
RESERVOIRPRESSURERELIEF/BLEEDVALVE
CASEDRAINFILTER
PRESSURESWITCH
PRESSURETRANSDUCER
FILTER
CASE DRAINFILTER
ACMP 1B
PRESSURESWITCH
PRESSURERELIEFVALVE
EDP 1A
FIREWALLSOV
TO HYDRAULICSERVICES
HEATEXCHANGERAND FAN
GROUNDSUCTION
GROUNDPRESSURE
PRESSURE MANIFOLD
LEGEND
Pressure (Red).
Return (Green).
Case drain (Yellow).
Pump casefilter drain.
SYSTEM1
PRESSUREGAUGE
GROUNDSERVICE
FILLING
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Hydraulic Systems 1 and 2 SchematicFigure 14---20---1 Sheet 2
PP
S S
T
RETURNMANIFOLD
BYPASSVALVE
ACCUMULATOR
RESERVOIRPRESSURERELIEF/BLEEDVALVE
CASEDRAINFILTER
PRESSURESWITCH
PRESSURETRANSDUCER
FILTER
CASE DRAINFILTER
ACMP 2B
PRESSURESWITCH
PRESSURERELIEFVALVE
EDP 2A
FIREWALLSOV
TO HYDRAULICSERVICES
TO HEATEXCHANGERAT SY STEM 1
GROUNDSUCTION
GROUNDPRESSURE
PRESSURE MANIFOLD
LEGEND
Pressure (Red).
Return (Green).
Case drain (Yellow).
Pump casefilter drain.
SYSTEM2
FROM
OUTBOARDBRAKE
RETURNFILTER
GROUNDSERVICE
FILLINGPRESSUREGAUGE
GROUNDSERVICENITROGEN
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C. Hydraulic Shutoff Valves
Electrically operated, normally open, hydraulic shutoff valves are installed in the suctionlines of the engine driven pumps (1A and 2A). During an engine fire condition, thecorresponding shutoff valve is motored closed when the ENG FIRE PUSH switchlight is
pressed. (See Chapter 10, Fire Protection).
Valve position is indicated on the EICAS, HYD synoptic page.
D. Reservoir
System1 and 2 reservoirs are storage tanks that hold a reserve supply of hydraulicfluid for their respective systems. The reservoirs are also partially pressurized withsystempressure to maintain a positive flow of fluid to the EDP and/or ACMP
E. Accumulator
An accumulator installed in each system stores hydraulic pressure. The accumulator is
charged with nitrogen and is used to dampen pressure surges and to maintain systempressure during momentary system demand increases.
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Systems 1 and 2
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Systems 1 and 2 --- Synoptic PageFigure 14---20---3
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Systems 1 and 2 --- EICAS Indications Figure 14---20---4
HYD SOV 1 or 2 CLOSED advisory (green)Indicates that corresponding shut--off valve hasbeen closed.
HYD SOV 1 or 2 OPEN caution (amber)Indicates that the respective shut--off valve isopen with an associated engine fire.
Status Page
Primary Page
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Systems 1 and 2
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F. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CBPANEL
CBLOCATION
NOTES
HYD PUMP 1 AC BUS 2 A5
System 1AC PUMPCONT 1 DC BUS 2
2 G14
IND 1 G13
HYD PUMP 2 AC BUS 1 A5
System 2AC PUMPCONT 2 DC BUS 1
1 G14
y rau cSystems IND 2 G13
Fans
HYD SYSTFAN
AC BUS 1 A8
FAN CONT DC BUS 1 G12HYD SOVR ENG
1S4
uto a vesHYD SOVL ENG
S5
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System 3
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MASTER
1. HYDRAULIC SYSTEMNO.3
Hydraulic system No.3 has the same components as systems No.1 and No.2, with theexception that No. 3 systemhas two AC motor pumps (identified as 3A and 3B) and noengine driven pump (EDP). Hydraulic systemNo.3 provides a nominal 3000 psi pressure to
the ailerons, elevators, rudder, spoilerons, landing gear actuators, inboard brakes and thenosewheel steering system. System No.3 hydraulic lines pass through the wings and arecooled by fuel.
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System 3
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Hydraulic System 3 --- SchematicFigure 14---30---1
PP
S S
T
RETURNMANIFOLD
BYPASSVALVE
ACCUMULATOR
RESERVOIRPRESSURERELIEF/BLEEDVALVE
CASEDRAIN FILTER
PRESSURESWITCH
PRESSURETRANSDUCER
FILTER
CASE DRAINFILTER
ACMP 3B
PRESSURESWITCH
PRESSURERELIEFVALVE
ACMP 3A
FIREWALL SOV
TO HYDRAULICSERVICES
GROUNDSUCTION
GROUNDPRESSURE
PRESSURE MANIFOLD
LEGEND
Pressure (Red).
Return (Green).
Case drain (Yellow).
Pump casefilter drain.
SYSTEM3
ACOUSTICFILTER
ACOUSTICFILTER
HYDRAULICTHROUGHTANKS
RETURNFILTER
GROUNDSERVICE
FILLING
PRESSUREGAUGE
GROUNDSERVICENITROGEN
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System 3 --- Synoptic PageFigure 14---30---3
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System 3 --- EICAS Indications Figure 14---30---4
HYD PUMP 3A or 3B caution (amber)Indicates that corresponding AC motor pumphas a low pressure output ( 1800 psi).
HYD 3 HI TEMP caution (amber)Indicates that corresponding system has afluid temperature of 96 C (205 F) or greater.
HYD 3 LO PRESS caution (amber)Indicates that corresponding systempumps (both AC motor pumps) have a lowpressure output ( 1800 psi).
Primary Page
BRT
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System 3
MASTERFli htC O ti M l
B. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CBPANEL
CBLOCATION
NOTES
HYD PUMP 3A AC BUS 2 A2PUMP CONT3A
DC BUS 22
G15
Pum s HYD PUMP 3B AC BUS 1 A2
HydraulicPUMP CONT3B
DC BUS 11
G11
ESS HYDPUMPSUPPLY
ADG BUS 3 A11
Indication HYD SYST DC BATTERYIND 3 BUS