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T-1 Jayhawk > Hydraulic System > Flashcards

Hydraulic System Flashcards

1
Q

What 4 systems are operated by hydraulics?

A

Flaps, Landing Gear, Power Brakes, Speed Brakes

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2
Q

What are the 3 secondary flight control systems?

A

Flaps, Speed brakes, Trim

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3
Q

Is the landing gear handle mechanical, electrical, or hydraulic?

A

hydraulic

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4
Q

Hydraulic reservoir capacity is:

A

1.2 gallons

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5
Q

HYD LEVEL LO illuminates at:

A

0.6 gallons in hyd reservoir

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6
Q

Bleed air pressure to the hydraulic reservoir is:

A

15 psi

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7
Q

The hydraulic pumps are ____ displacement pumps

A

Variable

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8
Q

Hydraulic normal operating pressure

A

1,500 psi

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9
Q

Hydraulic pump flow varies from 0 to __ gallons per minute

A

3.9

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10
Q

L or R H PMP PRESS LO illuminates at:

A

<750 psi downstream of one hydraulic pump

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11
Q

How many filters are in the hydraulic system?

A

3

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12
Q

Hydraulic filters have automatic bypass at __ psi

A

50

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13
Q

Hydraulic indicator is calibrated from 0 to ____ psi

A

2000

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14
Q

The hydraulic pressure relief valve starts to open at ____ psi

A

1650

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15
Q

If hydraulic pressure reaches ____ psi, the crew must open the bypass valve

A

1850

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16
Q

The hydraulic valve package controls flow to what 3 systems?

A

landing gear, flaps, speed brakes

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17
Q

How many return lines are in the hydraulic system?

A

2

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18
Q

Hydraulic system normal pressure range

A

1350 to 1550 psi

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19
Q

Landing gear warning horn illuminates when…

A

1) Throttles < 70% N2 and flaps 0 or 10. 2) Flaps beyond 10.

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20
Q

A solenoid locks the gear handle when…

A

… the left switch detects weight on wheels

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21
Q

Nosewheel deflection range with only nosewheel steering:

A

25 degrees each side

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22
Q

Nosewheel deflection range with brakes and differential power:

A

45 degrees each side

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23
Q

EMER DOOR CLOSE uses _____ to close the main gear fuselage doors

A

nitrogen

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24
Q

Gear extension and retraction takes approx. how long?

25
Q

To operate the EMER L/G DOWN handle, ..

A

push it down and pull out about 10 inches

26
Q

Emergency gear extension may take approx. how long?

A

30 seconds

27
Q

Maximum speed for emergency gear extension

28
Q

Landing gear max airspeed/altitude

A

200 KIAS / FL200

29
Q

Minimum strut extension for main gear

A

1.1 inches

30
Q

Normal strut extension for nose gear

A

3.5 inches

31
Q

For emergency extension, the inboard main gear doors, main gear, and nose gear are ______ released

A

mechanically

32
Q

Brake accumulator charge

A

900 +/- 50 psi

33
Q

Antiskid protection is available above ___ knots tire speed

34
Q

ANTISKID FAIL illuminates

A

1) loss of antiskid power with gear down, antiskid on. 2) Gear down, antiskid OFF. 3) dump command for long time

35
Q

Nitrogen for emergency brakes allows _ to __ applications (_ to __ if nitrogen used to raise inboard gear doors)

A

7 to 10; (7 to 9)

36
Q

Brakes will fail at ____ million foot-pounds

37
Q

Thermal fuse plugs release at…

A

430 degrees F, or 8.1 million foot-pounds

38
Q

Max temperature doesn’t reach brake assembly for up to __ minutes

39
Q

What component allows either pilot to apply brakes?

A

Mixing valves

40
Q

Landing without hydraulics (no flaps, speed brakes, power brakes, or antiskid) increases landing distance approx…

A

90% over computed 30-flap distance

41
Q

REFILL line on the hydraulic reservoir is __ gallons

42
Q

What are 2 reasons for bleed air pressurizing the hydraulic reservoir?

A

Prevent foaming, and ensure continuous supply to the pumps

43
Q

Emer gear extension may require yaw: apply rudder into the gear with the ____ indication

44
Q

The disc brake wear pin will protrude about __ inch from the flange

45
Q

Do not approach overheated brakes for…

A

30 minutes

46
Q

Maximum rudder deflection

A

30 degrees each side

47
Q

What 3 functions does the electric servo connected to the rudder serve?

A

Autopilot, rudder boost, yaw damper

48
Q

Elevator range of movement

A

Up 25 degrees, down 12 degrees

49
Q

Outboard spoilers range of movement

A

-14 degrees to 72 degrees

50
Q

Inboard spoilers range of movement

A

-14 degrees to 68 degrees

51
Q

FLAP ASYM is triggered by

A

7 degrees difference between L and R main flaps

52
Q

G limitations, flaps up

A

-1 to 3.2 G’s

53
Q

G limitations, flaps extended

54
Q

Speed brake function moves spoilers to __ degrees

55
Q

Speed brake operation time (inflight / ground)

A

2.6 seconds / 0.6 seconds

56
Q

Stabilizer (pitch) trim range of movement

A

-1.5 to 12 degrees

57
Q

Annunciator sounds if pitch or roll trim is activated for over _ seconds

58
Q

Roll trim tabs range of movement

A

25 degrees each way

59
Q

Rudder trim tab range of movement

A

25 degrees each way

T-1 Jayhawk (11 decks)

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