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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
Indication for Mechanical Back up
MAN PITCH TRIM ONLY
26
What colour is alpha prot
Orange and black
27
What colour is alpha max
solid red
28
What speed will you get in Alternate Law?
Vsw
29
Why will the slats operate at half speed?
Following a loss of one SFCC or following the loss of hydraulic supply
30
What is SFCC?
Slat and Flap Control Computer - two onboard
31
What two control surfaces can be mechanically controlled?
THS and rudder
32
What is the FCDC?
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
What are the control modes of the electrically controlled, hydraulic servo jacks?
Active - the jack is electrically controlled Damping - the jack follows surface movement Centring - the jack hydraulically locked in the neutral position
34
When do you get alpha prot and alpha max?
In normal law
35
How many flap positions are there?
Five positions - 0, 1, 2, 3, FULL
36
What is alpha lock?
It prevents the slats from retracting below a specific speed (148 kt) and AoA limit (8.5 degrees)
37
What control surfaces do you have in mechanical back up?
THS and rudder

Airbus (14 decks)

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