Hydraulics Flashcards
1
Q
LEFT SYSTEM
- Quantity –
- Low level alert –
- Reservoir pressurised –
A
LEFT SYSTEM
- Quantity – 1.0 gal
- Low level alert – 47%
- Reservoir pressurised – 55 psi
2
Q
RIGHT SYSTEM
- Quantity –
- Low level alert –
- Reservoir pressurised –
A
RIGHT SYSTEM
- Quantity – 1.6 gal (LDG demand)
- Low level alert – 30%
- Reservoir pressurised – 55 psi
3
Q
LEFT/RIGHT SYSTEM
- Normally quantity not more than –
- Max Temp –
A
LEFT/RIGHT SYSTEM
- Normally quantity not more than – 60% (read correctly when pressurised)
- Max Temp – 95°C
4
Q
ENGINE DRIVEN PUMPS (EDP)
- Pressure (No flow) –
- Pressure (Max Flow) –
- Flow rate –
A
ENGINE DRIVEN PUMPS (EDP)
- Pressure (No flow) – 3000 psi
- Pressure (Max Flow) – 2850 psi
- Flow rate – 11.4 gpm (5.3 gpm at idle)
5
Q
ELECTRIC MOTOR PUMP (EMP)
- Pressure –
- Flow rate –
- When armed, comes on when hydraulic pressure –
- On during takeoff until –
A
ELECTRIC MOTOR PUMP (EMP)
- Pressure – 2900 psi
- Flow rate – 1.7 gpm
- When armed, comes on when hydraulic pressure – < 1300 psi when either generator operational
- On during takeoff until – gears up or RTO is completed (need to manual recycle OFF)
6
Q
ELECTRIC MOTOR PUMP (EMP)
- Auto EMP inhibited (manual override) –
- Power source –
- Used for –
A
ELECTRIC MOTOR PUMP (EMP)
- Auto EMP inhibited (manual override) – >95 °C
- Power source – Main Bus
- Used for – Closing MED, DC Left EMP
7
Q
ACCUMULATOR
- No. of accumulators –
- Nitrogen pre-charge –
- No. of brake applications when fully charged (normal with anti-skid) –
A
ACCUMULATOR
- No. of accumulators – 2 (1 per wheel well)
- Nitrogen pre-charge – 700 psi
- No. of brake applications when fully charged (normal with anti-skid) - 6
8
Q
PARK BRAKE
• Charge using EMP when –
A
PARK BRAKE
• Charge using EMP when – < 1300psi
9
Q
EMERGENCY GEAR BOTTLE
• Nitrogen pre-charge –
A
EMERGENCY GEAR BOTTLE
• Nitrogen pre-charge – 2600 to 3000 psi
10
Q
LIMITATIONS
- EMP ops above 39000ft limited to –
- Max hydraulic temperature –
- Normal operation pressure –
A
LIMITATIONS
- EMP ops above 39000ft limited to – 10 mins
- Max hydraulic temperature – 95 °C
- Normal operation pressure – 2700 to 3250 psi (max 3500 psi)
