Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

FT-339C > Hydraulic System > Flashcards

Hydraulic System Flashcards

1
Q

Hydraulic system nominal pressure

A

176 +- 14bar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Hydraulic system provides power for

A

NWS
Landing gear
Brakes
Speedbrake
Flaps
Ail servo control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Initial charge of accumulator

A

59 bar (860psi)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Emergency hydraulic provides power for

A

Emergency gear extension only
Emergency braking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The Separation Valve is set at a pressure of

A

108bar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Main hydraulic system components

A

Reservoir 16,25lt
Accumulator
Engine-driven pump (variable flow)
2 filters
Relief valve
Zero setting selector valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Emergency hydraulic system components

A

Separation valve
Emergency accumulator
Zero setting selector valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How many pressure transducers in the hydraulic system

A

2, one for the main and one for the emergency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Signals received from hydraulic pressure transducers are sent to

A

EDAB for showing on the MFD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

HYD PRSS comes on when?

A

In case of low hydraulic pressure in the Emergency System (70bar)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does happen to hydraulic system when the aircraft becomes airborne?

A

The solenoid valve closes isolating the 2 systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What can you expect from hydraulic indications when performing a steep climb?

A

A pressure drop in the Emergency System because of Nitrogen pressure decreasing because of cooling of the accumulator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What element is used to guarantee pressure from the hydraulic accumulator?

A

Nitrogen (N)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The solenoid separation valve is operated by

A

A solenoid that is energized while on the ground (open) from a switch on the left landing gear struct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

After an Emergency Gear Extension, when the A/C is back on the ground, what does happen to the hydraulic system?

A

The isolating valve opens if in the main system there is at least a pressure of 108bar, allowing to all the fluid stored in the accumulator to be directed towards the emergency system for application of emergency braking by using the handle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

In what direction only the separation valve opens?

A

From main to emergency

17
Q

Aileron Servo uses a pressure reduced from ___ to ___

A

From 176bar to 146bar by a pressure reducer

18
Q

Pressure reducer valve (ail servo) is controlled by what switch?

A

AIL SERVO switch in each cockpit

19
Q

AIL SERVO comes on when

A

Pressure < 61bar

20
Q

In case of hydraulic pump failure, the accumulator provides power for which systems

A

Landing gear extension
Wing flaps
Wheel brakes
Ail servo control (temporary use)

NO
NWS
Speedbrake

21
Q

Hydraulic pressure relief valve opens and closes at which values?

A

235 bar opens
201 bar closes

22
Q

Name the 4 hydraulic selectors from left to the right

A

Gear doors
Landing gear
Speedbrake
Flaps

23
Q

How is it possible to understand if one of the 2 filters in hydraulic system is clogged?

A

Red pin pops out

24
Q

Why in the hydraulic system on ground is used a pin?

A

To prevent electrical power to reach the selectors and therefore actuate the system

25
Q

Where the 2 pressure accumulators of hydraulic system are located?

A

Left fuselage

26
Q

Where the hydraulic reservoir is located?

A

Right side of the fuselage

27
Q

Hydraulic reservoir capacity

A

16,25lt

28
Q

What are the names of the 2 filters of hydraulic system

A

Main filter (filter fluid exiting the pump)
Return filter (filter fluid going back to the reservoir)

29
Q

Hydraulic filters can filter up to

A

5microns

30
Q

What happens to hydraulic system in case of a huge leak on ground to the main system?

A

The isolating valve closes at 108bar allowing emergency braking action

31
Q

What could be the first indication of Hydraulic pressure drop in the main system?

A

AIL SERVO on

32
Q

Minimum pressure to operate flaps

A

40bar

33
Q

Min pressure to operate NWS

A

70-80 bar

34
Q

Min press to operate landing gear

A

110bar

35
Q

What’s the hyd fluid color?

A

Red

36
Q

At what temperature does the hyd fluid get fire?

A

75ºC

37
Q

What is the minimum pressure for brakes application?

A

70bar

FT-339C (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions