Hydrulics Flashcards
How many hydraulic systems are there
Three
What normal pressure do all three hydraulic systems operate at
3000 psi
What MFD page provides a visual representation of the hydraulic system operation and parameters
The hydraulic synoptic page
What pressure is an amber tick mark placed at on the pressure indication for all three systems on the hydraulic synoptic page
1800 psi
What color is the symbol for shutoff valves that are open, engine driven pumps that are on and hydraulic flow lines that are pressurized.
Green
Will a failure of two hydraulic systems result in a complete loss of flight critical functions
No - due to system design.
What is hydraulic system 1 comprised of
One reservoir one engine driven pump (EDP1) one electrical DC motor pump (DCMP1) one shutoff valve (SOV1) one accumulator
When will the DCMP 1 be automatically commanded on with the HYD 1 ELEC pump knob in the AUTO position
During Takeoff and Landing Phases
What is hydraulic system 2 comprised of
One reservoir
One engine driven pump (EDP2)
One Shutoff valve (SOV2)
One accumulator
Hydraulic System 3 is designed to operate in conjunction with what electrical systems
The battery and RAT
What is the only source of electrical power for HYD system 3
The electric DCMP 3
What is the source of the electrical power for the electrical DCMP 3
EMER BUS 3
If the airplane loses HYD1 and HYD2, will the overheat protection system of HYD 3 still be functional
No, it will be inhibited
What is the backup for HYD systems 1 and 2
The PTU
What is the primary function of the PTU
To transfer power from hydraulic system 1 to 2 or vice versa
