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A220 > Hydraulic > Flashcards

Hydraulic Flashcards

1
Q

Q1: What type of pumps are the hydraulic pumps 1A and 2A?

A

A. EDP (engine driven pump)

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2
Q

Q2: What type of pumps are hydraulic pump 3A, 3B and 2B?

A

A. ACMP (Alternating Current Motor Pump)

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3
Q

Q3: What are the two functions provided by the hydraulic system accumulators in
system 3?

A

A. 1. Provide sufficient hydraulic pressure during RAT deployment
2. To dampen transient pressure during rapid movement of hydraulic users

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4
Q

Q4: What Is the advantage of using a PTU in hydraulic system 1 vs. an ACMP?

A

A. A reduction of weight

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5
Q

Q5: What is the name of the component on all hydraulic systems whose purpose is to “preserve system pressure and flow capability for higher priority users if thereis a pressure drop to 1700 psi or less”?

A

A. Priority valves

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6
Q

Q6: The priority valve on hydraulic system 1 Isolates which component?

A

A. Landing gear

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7
Q

Q7: The priority valve on hydraulic system 2 Isolates which component?

A

A. PTU (Power Transfer Unit)

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8
Q

Q8: The priority valve on hydraulic system 3 isolates which component?

A

A. Slats and Flaps

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9
Q

Q9: The RAT hydraulic pump powers which hydraulic system?

A

A. Hydraulic system #3

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10
Q

Q10: What is the purpose of the PTU?

A

A. It supplies hydraulic pressure to system 1 in case EDP 1A failed or in periods of high demand such as takeoff and landing

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11
Q

Q11: What type of heat exchangers do we use for system 1 and system 2?

A

A. They each use a fuel/hydraulic heat exchanger

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12
Q

Q12: What are the 3 ways the hydraulic SOV’s on hydraulic systems 1 and 2 close?

A

A. 1. By pressing the HYD SOV switch
2. By pressing the L or R ENG FIRE switch 3. Hydraulic fluid overtemperature

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13
Q

Q13: What is the nominal operating pressure for the hydraulic systems?

A

A. 3000 Psi

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14
Q

Q14: When the PTU is in Auto what will trigger it to activate?

A

A: If EDP 1A fails or when high flow is demanded

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15
Q

Q15: When the HYD pump 3B is in Auto what will trigger it to activate?

A

A: If ACMP 3A fails or when high flow is demanded

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16
Q

Q16: When the HYO pump 2B is in Auto what will trigger it to activate?

A

A: If EDP 2A fails or when high flow is demanded

17
Q

Q17: How many hydraulic systems do we have on the airplane?

A

A. 3

18
Q

Q18: How many hydraulic pumps do we have total? Which Ones?

A

A. 7 in total (EDP 1A, PTU, ACMP3A, ACMP 3B, EDP 2A, ACMP 2B, RAT HYD pump)

A220 (21 decks)

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