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Système hydrauliqueHydraulic System

Hydraulics
SystèmeSystem
ConditionCondition
Trois systèmes hydrauliques indépendants (A, B, Standby) — pompes EDP/EMDP, PTU, réservoirs pressurisés, alimentations commandes de vol et utilitaires.Three independent hydraulic systems (A, B, Standby) — EDP/EMDP pumps, PTU, pressurized reservoirs, flight-control and utility feeds.
ObjectifObjective
Lire le panneau HYD PUMPS, relier quantités EIS aux fuites, et savoir ce que chaque système alimente.Read the HYD PUMPS panel, relate EIS quantities to leaks, and know what each system powers.
SYSTEM A SYSTEM B STANDBY PTU
Panneau HYD PUMPSHYD PUMPS panel
HYD PUMPS SYSTEM A LOW PRESSURE ON OFF ENG 1 DC BUS 2 EDP OVERHEAT LOW PRESSURE ON OFF ELEC 2 GEN BUS 2 EMDP SYSTEM B OVERHEAT LOW PRESSURE ON OFF ELEC 1 GEN BUS 1 EMDP LOW PRESSURE ON OFF ENG 2 DC BUS 1 EDP ENG 1 + ELEC 2 = A (red) · ELEC 1 + ENG 2 = B (green) · EDP = LP only · EMDP = OH + LP
ENG 1 + ELEC 2 = A · ELEC 1 + ENG 2 = B. EDP : LOW PRESSURE seulement. EMDP : OVERHEAT + LOW PRESSURE.ENG 1 + ELEC 2 = A · ELEC 1 + ENG 2 = B. EDP: LOW PRESSURE only. EMDP: OVERHEAT + LOW PRESSURE.

EDP : couplée mécaniquement au N2 — tourne toujours moteur tournant. Switch OFF = vanne de dépressurisation (solénoïde DC Bus), pas arrêt mécanique.EDP: mechanically coupled to N2 — always runs with the engine. Switch OFF = depressurization valve (DC Bus solenoid), not a mechanical stop.

EMDP : pompe électrique — OVERHEAT + LOW PRESSURE. Alim. GEN BUS opposé (ELEC 2 ← GEN BUS 2, ELEC 1 ← GEN BUS 1).EMDP: electric pump — OVERHEAT + LOW PRESSURE. Powered by opposite GEN BUS (ELEC 2 ← GEN BUS 2, ELEC 1 ← GEN BUS 1).

DC BUS 2 · ENG 1 GEN BUS 2 · ELEC 2 GEN BUS 1 · ELEC 1 DC BUS 1 · ENG 2
Débits pompesPump flow rates
Quantités — Système AQuantities — System A
USGQtyEISPressStatutStatus
4.80F100%3,000PleinFull
4.20RFL88%3,000Limite refillRefill limit
4.00—83%3,000Train rentré — en volGear up — in flight
1.80< ¼22%3,000Fuite EDP — système OKLeak in EDP — system OK
1.0000%> 0Indication zéroZero QTY indication
0.00——0Fuite EMDP/lignes → perte ALeak EMDP/lines → loss of A
Quantités — Système BQuantities — System B
USGQtyEISStatut BStatus B
7.20F100%PleinFull
6.40RFL88%Limite refillRefill limit
4.95> ½64%Fuite STBY → perte STBYLeak STBY → loss of STBY
3.50< ½40%Fuite EDP — système OKLeak EDP — system OK
1.30> 05%Fuite EMDP/EDP/lignes — PTU encore dispoLeak EMDP/EDP/lines — PTU still available
1.0000%Indication zéroZero QTY
0.0000%Fuite PTU → perte B + PTULeak in PTU → loss of B and PTU
Quantités — StandbyQuantities — Standby
USGEISStatutStatus
2.80100%PleinFull
1.4050%LOW QUANTITY — perte STBYLOW QUANTITY — loss of STBY

Standby : plein 2.80 USG · LOW QUANTITY à 1.40 USG. Réservoirs A/B/STBY : 45–50 PSI pneumatique (max 65). Croisement STBY↔B : fuite STBY → B ≈ 64 % EIS.Standby: full 2.80 USG · LOW QUANTITY at 1.40 USG. Reservoirs A/B/STBY: 45–50 PSI pneumatic (max 65). STBY↔B crosscheck: STBY leak → B ≈ 64% EIS.

Qui alimente quoiWho powers what
SYSTEM A ENG 1 EDP · ELEC 2 EMDP • Eng 1 Thrust Reverser • Inbd Flight Spoilers • Ground Spoilers • Autopilot A • Normal Brakes • NWS (normal) • LG Up/Down via LGTU • FLT CTL SOV (A) DC BUS 2 · GEN BUS 2 Full 4.80 · RFL 4.20 USG STANDBY EMDP · ram-air cooled • STBY Rudder (SOV) • LE Flaps / Slats (ALTN) • Eng 1 / 2 TR via STBY LOW QTY · LOW PRESSURE Full 2.80 · LQ @ 1.40 USG Fed from System B qty PTU ≈ 2,600 PSI → LED Motor A · Pump B · keel beam SYSTEM B ELEC 1 EMDP · ENG 2 EDP • Auto Slat / LE Flaps-Slats • TE Flaps (normal) • Eng 2 Thrust Reverser • Outbd Flight Spoilers • Yaw Damper · A/P B • Brakes + Accum · ALT NWS • FLT CTL SOV · ALTN Flaps GEN BUS 1 · DC BUS 1 Full 7.20 · RFL 6.40 USG SHARED FLIGHT CONTROLS (A + B) Rudder (+ FFM) · Ailerons · Elevator / Elevator Feel FEEL DIFF PRESS when TE Flaps UP Reservoirs 45–50 PSI pneumatic (max 65). No fluid transfer A↔B in normal ops. A STBY B PTU Catalog architecture — SVG recreation (no photos)
Architecture A (rouge) · B (vert) · Standby (jaune) · PTU · commandes partagées — catalog 5929–5932b.Architecture A (red) · B (green) · Standby (yellow) · PTU · shared controls — catalog 5929–5932b.
PTU

RôleRole

Aide les LED quand EDP B basse (panne EDP B / Eng 2 / fuite B). Backup autoslat.Aids LED when B EDP is low (B EDP fail / Eng 2 fail / B leak). Autoslat backup.

ArchitectureArchitecture

Keel beam — moteur depuis A, pompe depuis B ≈ 2 600 PSI vers LE. Aide EMDP (priorité TE).Keel beam — motor from A, pump from B ≈ 2,600 PSI to LE. Aids EMDP (TE priority).

FCOM

« Normal rate » = volume PTU + EMDP.“Normal rate” = PTU + EMDP volume.

Mid-EXTMid-EXT

Deux pompes B panne mid-EXT : PTU autoslat seulement ; fluide piégé jusqu’à rétraction LE ; STBY LED rend PTU redondant.Both B pumps fail mid-EXT: PTU autoslat only; trapped fluid until LE retract; STBY LED makes PTU redundant.

AND
En perte B au décollage, le PTU est coupé et ne rétracte pas les LE quand TE ALTN → UP. Astuce ~1.30 USG / 5 % : ALTN Master OFF→ARM · Pos toggle 1 s UP→OFF · quand LE UP → Master OFF.On Loss of B at takeoff, PTU is cut off and will not retract LE when TE are electrically retracted UP via Alternate Flaps. Trick ~1.30 USG / 5%: ALTN Master OFF→ARM · Pos toggle 1 s UP→OFF · when LE UP → Master OFF.
Réservoirs — clignotementReservoirs — blinking

CauseCause

A/B pressurisés par air manifold. Vol froid prolongé : condensation gelée bloque l’air → cavitation.A/B pressurized by manifold air. Prolonged cold high-alt flight: frozen condensation blocks air → cavitation.

IndicesCues

LOW PRESSURE intermittent · EMDP OH occasionnel · qty↑ (moussage)Intermittent LOW PRESSURE · occasional EMDP OH · qty↑ (foaming)

Duct

Duct basse → page Duct Pressure.Low duct → Duct Pressure page.

ActionAction

Gel suspecté → descendre masse d’air plus chaude.Suspected freeze → descend to warmer air mass.

Faits tirés du catalog hyd13 uniquement. Le QRH / FCOM papier fait foi.Facts from hyd13 catalog only. Paper QRH / FCOM prevails.