Hydraulics Flashcards
How are primary and demand hydraulic pumps powered
L/R primary - engine driven
L/R demand - electric driven
C primary - electric driven
C demand - air driven
How many hydraulic systems
3
L - powers L TR & some flight controls
R - powers R TR, some flight controls and normal brakes
C - powers some flight controls, flaps & slats, landing gear, steering, and alternate & reserve braking
Land gear general
Powered by Center system
Gear doors open & close with hyd psi
Gear is retracted with hyd psi
Hyd psi sets and releases locks
Land gear general
Powered by Center system
Gear doors open & close with hyd psi
Gear is retracted with hyd psi
Hyd psi sets and releases locks
Nose wheel steering
7* with rudder pedals
70* with tiller
Main gear steering
After NWS exceeds 13*
Anti skid
Available with all braking modes
Normal system each wheel controlled individually
Alternate system front and center in pairs rear still independent
Brake modes
Normal - right hyd system
Alternate/reserve - center hyd system
Accumulator - right hyd system
Anti skid and parking brake available in all 3
Parking brake works
Works on all three systems
Auto brake RTO
Max breaking
Thrust levers idle
>85 kts
