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Airbus > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

How are the flight control surfaces controlled and activated?

A

Electronically controlled and hydraulically activated

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2
Q

How many slats?

A

10 - 5 on each wing

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3
Q

How many spoilers?

A

10 - 5 on each wing

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4
Q

What is ELAC?

A

Elevator aileron computers - two onboard, used for normal elevator and stabiliser control and aileron control

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5
Q

What is SEC?

A

Spoiler elevator computer - 3 onboard used for spoilers control and standby elevator and stabiliser control

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6
Q

What is FAC?

A

Flight augmentation computer - used for electrical rudder control

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7
Q

What controls roll?

A

2, 3, 4, 5 plus ailerons

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8
Q

What are the speed brakes?

A

2, 3, 4 spoilers

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9
Q

When will ground spoilers automatically extend when armed?

A

If the wheel speed exceeds 72 kts they will automatically extend as soon as both thrust levers are set to idle

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10
Q

Limit for manual braking?

A

You will not get manual braking below 72 kt

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11
Q

When will ground spoilers automatically extend when not armed?

A

As soon as reverse is selected on one engine

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12
Q

What are the five protections in normal law?

A
  • Load factor
  • Pitch attitude
  • High AoA
  • High speed
  • Bank angle
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13
Q

Pitch attitude protection limits

A
  • 30 degrees nose up in conf 0 to 3 (progressively reducing to 25 at low speed)
  • 25 degrees nose up in conf full (progressively reducing to 20 at low speed)
  • 15 degrees nose down
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14
Q

When do the FD bars disappear from the PFD?

A

When the pitch attitude exceeds 25 degree up or 13 degrees down

They will reappear at 22 degrees up and 10 degrees down

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15
Q

When is high speed protection activated?

A

At Vmo + 6 kt

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16
Q

What is aileron droop?

A

When flaps are extended the ailerons deflect 5 degrees down to provide extra lift

17
Q

What is the max roll rate in normal law?

A

15 degrees per second

18
Q

What is the max bank angle in normal law?

A

67 degrees

19
Q

What is the max bank angle if AoA protection is active?

A

45 degrees

20
Q

What is the max bank angle if high speed protection is active?

A

40 degrees

21
Q

What are the indications you are in Alternate Law?

A
  • ECAM will show ALTN LAW
  • Amber crosses
  • Modified speed scale shows Vsw
22
Q

What protections do you have in Alternate Law (with reduced protections)?

A
  • Load Factor protection
  • Low speed stability - replaces AoA protection
  • High speed stability - above Vmo/Mmo will command a nose up
23
Q

What protections do you have in Alternate Law (without reduced protections)?

A
  • Load Factor
24
Q

What are the indications you are in Direct Law?

A
  • ECAM
  • USE MAN PITCH TRIM
25
Q

Indication for Mechanical Back up

A

MAN PITCH TRIM ONLY

26
Q

What colour is alpha prot

A

Orange and black

27
Q

What colour is alpha max

A

solid red

28
Q

What speed will you get in Alternate Law?

A

Vsw

29
Q

Why will the slats operate at half speed?

A

Following a loss of one SFCC or following the loss of hydraulic supply

30
Q

What is SFCC?

A

Slat and Flap Control Computer - two onboard

31
Q

What two control surfaces can be mechanically controlled?

A

THS and rudder

32
Q

What is the FCDC?

A

Flight Control Data Concentrator - two onboard
They acquire data from the ELACs and SECs and send it to the EIS (Electronic Instrument System) and the CFDS (Centralised Fault Display System)

33
Q

What are the control modes of the electrically controlled, hydraulic servo jacks?

A

Active - the jack is electrically controlled
Damping - the jack follows surface movement
Centring - the jack hydraulically locked in the neutral position

34
Q

When do you get alpha prot and alpha max?

A

In normal law

35
Q

How many flap positions are there?

A

Five positions - 0, 1, 2, 3, FULL

36
Q

What is alpha lock?

A

It prevents the slats from retracting below a specific speed (148 kt) and AoA limit (8.5 degrees)

37
Q

What control surfaces do you have in mechanical back up?

A

THS and rudder

Airbus (14 decks)

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