Hydraulics Flashcards Preview

E Jet 175 Study Guide > Hydraulics > Flashcards

Flashcards in Hydraulics Deck (14):
1

What systems use hydraulic power?

Flight controls
Spoilers
Landing Gear
Nose wheel steering
Wheel brakes
Thrust levers

2

Can hydraulic fluid be transferred between each system?

No

3

How many hydraulic pumps are on the airplane?

6 total
2 EDPs
4 ACMPs

4

What are the basic components of the hydraulic systems?

Reservoir

Pumps

Accumulator

5

What do accumulators do?

Shock absorption

Fluid storage

6

Oral
What does the flow limiter valve do?

Assist in helping the RAT spin up to speed helping pump 3A....

After RAT is up to speed the pump unlimiter valve closes

The flow limiter valve stays on, the RAT powers 3A

7

Oral
When does pump 2B come on automatically?

After engine 1 start and releasing the parking break.

8

When will ACMP 1 or 2 automatically activate?

Ground -- flaps >0
-- TL set to T/O, or
-- Groundspeed > 50 kts

Flight. -- engine failure or EDP failure
-- Flaps >0

9

What are some important items controlled by HYD 2 system?

Landing gear ......

10

How many hydraulic systems are on the airplane?

3 independent systems

HYD 1, HYD 2, and HYD 3

11

What's the most important thing on hydraulic system 2?

Nose wheel steering and

Landing gear

12

When does the PTU actually start running?

When you actually select gear down lever

13

Are there any other accumulators?


Each Hydraulic system has an accumulator

Brakes have an accumulator

14

Where are the hydraulic pumps connected???

Accessory gear box??