Hydraulics Flashcards
Which of the following is not controlled by hydraulics?
These are: flight controls, landing gear, nose wheel steering, brakes.
What is the nominal pressure created by the engine-driven hydraulic pumps?
3000 psi.
What provides backup pressure created for the #1 hydraulic system?
Electrically powered standby hydraulic pump.
What is controlled by the #1 hydraulic system?
BARFPIE: brakes, anti-skid, rudder, flaps, PTU, inboard spoilers, elevator.
Which of the following is controlled by the #2 hydraulic system?
LOSERE: landing gear, outboard spoilers, steering, elevator, rudder, emergency/parking brake.
A minimum quantity of ____% must be present in the #1 and #2 hydraulic systems for aircraft dispatch.
40%.
A minimum quantity of ____% must be present in the #3 hydraulic system for aircraft dispatch.
45%.
T or F: the #1 hydraulic system can be powered by AC ground power and the standby hydraulic pump when the engines are shut down.
True.
T or F: both main hydraulic systems contain fuel/oil heat exchangers in the associated fuel tank to help cool the hydraulic fluid.
True.
T or F: the PTU can be turned on automatically or manually for the hydraulic systems.
True.
How many volts minimum are needed to run the DC motor pump for the #3 hydraulic system?
24V.
When running off of the DC motor pump, what does the #3 hydraulic system get pressurized at?
2600 - 3250 psi.
The auxiliary hydraulic system provides power for ____.
The alternate landing gear extension.
Nose wheel steering is powered by which hydraulic system?
2.
Normal hydraulic pressure from the engine driven hydraulic pump is approximately what PSI?
3000 psi.
