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EMB550 EASA RKA's > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

How many hydraulic systems are there?

A

Three (AOM 9-11-01)

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2
Q

What nominal pressure do all three hydraulic

systems operate at?

A

3,000 psi (AOM 9-11-01)

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3
Q

What MFD page provides a visual representation

of the hydraulic system operation and parameters?

A

The HYDRAULIC synoptic page (AOM 9-11-30)

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4
Q

What pressure is an amber tick mark placed at on
the pressure indication for all three systems on
the hydraulic synoptic page?

A

1,800 psi (AOM 9-11-30)

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5
Q

What color is the symbol for shutoff valves that
are open, engine driven pumps that
are on and hydraulic flow lines that are
pressurized?

A

Green (AOM 9-11-30)

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6
Q

Will a failure of two hydraulic systems result in a

complete loss of flight-critical functions?

A

No, due to system design (AOM 9-11-50)

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7
Q

What is hydraulic system 1 compromised of?

A

One reservoir, one engine driven pump (EDP 1),
one electrical DC motor pump (DCMP 1), one
shutoff valve (SOV 1) and one accumulator
(AOM 9-11-50)

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8
Q

When will the DCMP 1 be automatically commanded
on with the HYD 1 ELEC PUMP knob in
the AUTO position?

A

During takeoff and landing phases

AOM 9-11-50

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9
Q

What is hydraulic system 2 compromised of?

A

One reservoir, one engine driven pump (EDP 2),
one shutoff valve (SOV 2) and one accumulator
(AOM 9-11-50)

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10
Q

What is hydraulic system 3 compromised of?

A

One reservoir, one electrical DC motor pump

DCMP 3) and one accumulator (AOM 9-11-50

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11
Q

Hydraulic system 3 is designed to operate in

conjunction with what electrical system(s)?

A

The battery and the Ram Air Turbine (RAT)

AOM 9-11-50

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12
Q

What is the only source of hydraulic power for

hydraulic system 3?

A

The electric DCMP 3 (AOM 9-11-50)

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13
Q 
What is the source of electrical power for the
electric DCMP3 (hydraulic system 3)?
A

EMER BUS 3 (AOM 9-11-50)

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14
Q

If the airplane loses HYD 1 and HYD 2, will the

overheat protection system of HYD 3 still be functional?

A

No, it will be inhibited (AOM 9-11-50)

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15
Q

What is the backup for hydraulic systems 1 and

2?

A

The PTU (AOM 9-11-50)

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16
Q

What is the primary function of the PTU?

A

To transfer power from hydraulic system 1 to

system 2 or vice versa (AOM 9-11-50)

17
Q

When the PTU knob is in the AUTO position, when

will the LGHCUs automatically activate the PTU?

A

In the event of an engine failure or EDP failure

AOM 9-11-50

EMB550 EASA RKA's (24 decks)

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