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F-16 > Hydraulic System > Flashcards

Hydraulic System Flashcards

1
Q

Each Hydraulic System provides ____ psi hydraulic pressure

A

3000

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2
Q

The engine driven hydraulic pumps are on the ____ which is ran by the ____

A

ADG (Accessory drive gear box) ; (PTO) power takeoff shaft

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3
Q

if system A and B fail, the ____ driven pump provides hydraulic pressure to system ____

A

EPU ; System A

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4
Q

EPU system activates automatically if both system pressures fall below _______ psi

A

1000 psi

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5
Q

what are the 4 types of hydraulic system accumulators

A

Reservoir pressurization acc.
FLCS acc.
Brake/JFS acc.
LG/hook acc.

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6
Q

both systems operate

A

LEFs (leading edge flaps) and Primary Flight controls

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7
Q

each system has _____ accumulator which are separated by _______ ______

A

FLCS ; check valves

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8
Q

_________ adds more pressure when rapid flight control movements take place, before the EPU receives a start command and activates which takes about ___ seconds

A

FLCS accumulators ; 2 second

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9
Q

Brake/JFS accumulators provide ______ for the JFS, and _______ for the brakes

A

starting power ; emergency pressure

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10
Q

if engine is at least ____%, it will take ___-___ seconds for system B to recharge the brake/JFS accumulators

A

12% ; 40-60

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11
Q

the LG/Hook pneumatic accumulator provides ___________ and _________. This accumulator ____ rechargeable during flight.

A

alternate landing gear extension and holds the hook firmly on the runway
Not rechargeable during flight

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12
Q

Hydraulic cooling is provided by ______ which also cools _______ and_______ oil

A

a hydraulic fluid fueled heat exchange ; constant speed drive and ADG

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13
Q

Normal Hydraulic pressure is _____-____ psi

A

2850-3250

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14
Q

Hydraulic/Oil Pressure illuminates when ______ system drops below ____ psi

A

either ; 1000 psi

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15
Q

Landing gear system is normally operated by system __

A

B

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16
Q

the main landing gear retract ______ and extend by _____

A

hydraulically ; free fall assisted by air loads

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17
Q

Nose gear extends and retracts by _______ pressure with a ____ degrees twist and may not indicate down and locked until below ____ kts

A

hydraulic ; 90* ; 190

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18
Q

While on the ground, the LG Handle is locked down, after takeoff a signal from the ________ gear WOW switch activates a solenoid which unlocks the handle

A

left main

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19
Q

WOW switches are on the ______ gear and operate as a function of ________ or _______.

A

both MLG and NLG ; strut extension or compression

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20
Q

with system ___ hydraulic pressure available make sure the LG handle is down before using the ALT GEAR handle because the handle sends a signal to ____ and _____ to operate normally

A

system B ; brakes and Trailing Edge Flaps

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21
Q

LG and Hook emergency Pneumatic bottle is located in the ______ well

A

NLG

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22
Q

gear is up and locked when __________

A

all three lights are off and LG handle warning light is off

23
Q

LG handle warning light illuminates red when:

A 
LG/doors do not match LG handle position
LG/doors are in transit
LG not locked in commanded position
Airspeed <190 kts
altitude <10,000' MSL
rate of descent >250 fpm
24
Q

LG warning horn when:

A

Airspeed <190 kts
Altitude <10,000’ MSL
rate of descent >250 fpm

25
Q

TO/LDG CONFIG warning light illuminates when:

A 
airspeed <190 kts
altitude <10,000' MSL
rate of descent >250 fpm
TEFs not full down
LG not down and locked
26
Q

hydraulic system A operates:

A

Speedbrakes
fuel flow poportioner
leading edge flaps (LEFs)
FLCS

27
Q

hydraulic system B operates

A 
LEFs
FLCS
gun system
air refueling system
landing gear system
nosewheel steering system
wheel brake system
JFS system
28
Q

NWS is _____ controlled and _____ operated using system ____ pressure

A

electrically controlled ; hydraulically operated using system B pressure

29
Q

NWS is limited to ___ degrees

A

32

30
Q

NWS is automatically disengaged when ______

A

NLG strut is extended

31
Q

NWS not available after_____

A

alternate gear extension
NWS FAIL caution light
System B Failure

32
Q

NWS FAIL light does not illuminate for _____ or ______

A

System B Failure

or Strut Extension

33
Q

Brake hydraulic pressure is provided by system ___

A

B

34
Q

Brake pedals receive ____ power from the _____, and ___ power from the brake channel selection and has two batteries to provide DC power for redundancy and has ____ pistons - *Need full AC and DC power for full braking power

A

AC power ; 4 FLCS inverters ; DC power ; 3 pistons

35
Q

if _____ power is lost, no braking is available

A

battery

36
Q

channel 1 braking system:

A

normal position
brakes with LG handle down only
provides ant-spin when LG retracted

37
Q

channel 2 braking system:

A

brakes with LG handle up or down

LG handle stuck up (alternate gear extension) - channel 2 must be selected

38
Q

deceleration skid control is active with _____% pressure and _____ braking action

A

<85% and good braking action

39
Q

Max performance skid control is active with ____% pressure and ____ braking action

A

85% or more and poor braking action

40
Q

full anti skid protection above __ kts when accelerating and to __ kts when decelerating

A

above 12 kts ; 5 kts when decelerating

41
Q

not antiskid available with ANTI-SKID switch ___ and brakes in CH. __

A

OFF ; ch. 2

42
Q

Parking brake works when:

A

throttle off to idle position and WOW

43
Q

parking brake requires power from _____ and _____ or _____ accumulator

A

battery bus and system B or Brake/JFS accumulator

44
Q

parking brake automatically released when:

A

advancing throttle >1” beyond idle

45
Q

ANIT SKID caution light on when:

A

> 5 Kts with malfunction affecting braking
<5 Kts with malfunction not affecting braking
LG handle down and switch in OFF

46
Q

max engagement speed for hook operation

A

150 kts

47
Q

hook operation is ______ operated and pressure is supplied by the ______________

A

pneumatically ; LG/Hook emergency bottle

48
Q

in two-seater when will hook be raised?

A

when both switches are in the up position

49
Q

if the hook was down, and you move the switch to up…

A

allows hook to raise a little to taxi over cable, or be manually disengaged

50
Q

HOOK caution light when:

A

anytime hook is not up and locked

51
Q

For an approach-end arrestment, touch down at least ____ before cable and lower _____

A

500’ before and lower nose gear

52
Q

for departure-end arrestment, get hook down _____ before cable and reduce speed as much as possible

A

1500’

53
Q

to prevent hook bounce and possible missed engagement avoid ________

A

centerline lighting

54
Q

hook engagement: speeds greater than 150kts and greater than ____ from centerline or with ____ in the air could result in structural damage

A

35’ from centerline, with nosewheel in the air

F-16 (17 decks)

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