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KV Prep > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

What is normal system pressure?

A

3000 psi

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2
Q

What is the normal reservoir quantity?

A

45 - 85%

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3
Q

Can hydraulic quantity be accurately read without the system energized?

A

No

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4
Q

What kind of hydraulic fluid do we use?

A

Skydrol

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5
Q

What color is skydrol

A

Purple

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6
Q

If pump 1A or 2A fails, will the respective electric boost pump activate automatically?

A

No

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7
Q

When will the electric pumps (ACMPs) automatically activate?

A
  • Respective switches to AUTO
  • At least 1 generator online
  • Flaps out of 0
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8
Q

Is system cooling provided for the hydraulic system 3?

A

No

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9
Q

How are hydraulic system 1 and 2 cooled?

A

Ram air in flight

or a fan in the ram air duct while on the ground blow cooling air over the shared hydraulic heat exchanger heat exchanger in the aft equipment bay

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10
Q

If there is an engine driven pump problem, 1A or 2A, is the associated engine required to be shutdown?

A

No. A shutoff valve has been positioned between the pump and the reservoir to isolate the pump from the system

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11
Q

When will the HYD 1 or 2 HI TEMP caution be displayed?

A

When the temperature exceeds 96*C

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12
Q

When a powered system is displayed in white on the hydraulic synoptic page, what is indicated?

A

The system is pressurized above 1800 psi

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13
Q

What is indicated when a system is displayed in amber?

A

The system is pressurized less than 1800 psi

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14
Q

What is indicated when a system is displayed in muted (dim) magenta?

A

The sensing system is receiving invalid data

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15
Q

Which pumps are not controlled by the hydraulic control data

A

Pumps 1A and 2A

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16
Q

How many total hydraulic pumps are there?

A

6

4 electric
2 engine driven

17
Q

How can the engine hydraulic shutoff valves be closed?

A

Pressing L or R HYD SOV switchlight or by pressing the associated engine fire switch

18
Q

What powers hydraulic pump 3B

A

Normally AC bus 1, and it is hard wired to the ADG to be powered when the ADG is deployed

19
Q

If the ADG is providing power to pump 3B, can it be manually turned off?

A

No, the switch will not work

20
Q

What effect will a loss of hydraulic system 2 and 3 have on the landing gear?

A

Manual gear extension is required, and the nose gear will not extend

21
Q

What purpose does the accumulator serve?

A

It dampens oscillations in pressure

22
Q

What is the normal accumulator charge?

A

1500 psi

23
Q

Which system provide power to the brakes?

A

System 2 and 3

3 inboard brakes

2 outboard brakes

24
Q

Which system provides power to the nose wheel steering

A

System 3

KV Prep (14 decks)

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