Question 1

Normal Law mode Transitions

Accepted Answer

Pitch Control:

Ground Mode —> Flight Mode - 5s after liftoff and pitch > 8°

Flight Mode —> Flare Mode - 1s after 50’
Flare Mode —> Ground Mode - 5s after landing and pitch < 2.5°

Lateral Control:

Ground Mode —> Flight Mode - 0.5s after liftoff
Flight Mode —> Ground Mode - 0.5s after landing

Question 2

Protections in Normal Law

Accepted Answer

``` ‐ load factor limitation ‐ pitch attitude protection ‐ high-angle-of-attack (AOA) protection ‐ high-speed protection - bank angle protection - side slip target ```

Question 3

LOAD FACTOR PROTECTION

Accepted Answer

load factor is automatically limited to: +2.5 g to -1 g for clean configuration; +2 g to 0 for other configurations

Question 4

PITCH ATTITUDE PROTECTION

Accepted Answer

limits pitch attitude:

‐ 30 ° nose up in conf 0 to 3 (progressively reduced to 25 ° at low speed)
‐ 25 ° nose up in conf FULL (progressively reduced to 20 ° at low speed)
‐ 15 ° nose down (indicated by green symbols “=” on the PFD’s pitch scale)

flight director bars disappear from the PFD when the pitch attitude exceeds 25 ° up or 13 ° down*

Question 5

HIGH ANGLE-OF-ATTACK PROTECTION

Accepted Answer

-activated when angle-of-attack becomes greater than αPROT - Without pilot input, the F/CTL computers will maintain the AOA equal to αPROT - AOA can be further increased by the pilot input, up to a maximum value equal to αMAX - angle-of-attack will not exceed αMAX - has priority over all other protections

Question 6

HIGH SPEED PROTECTION

Accepted Answer

- activated at/or above VMO/MMO - THS setting is limited between the setting at the aircraft's entry into this protection and 11 ° nose-up - Positive spiral static stability is introduced to 0 ° bank angle (instead of 33 ° in normal law) - bank angle limit is reduced from 67 °to 40 ° - As the speed increases above VMO/MMO, the sidestick nose-down authority is progressively reduced, and a permanent nose-up order is applied to aid recovery

Question 7

BANK ANGLE PROTECTION

Accepted Answer

- maintains positive spiral static stability for bank angles above 33° - Up to 33° the system holds the roll attitude constant when the sidestick is at neutral - with full lateral side stick bank angle is limited to 67° - when active, auto trim is inoperative If Angle-of-Attack protection is active bank angle is limited to 45° If High Speed Protection is active bank angle is limited to 40° and the system maintains positive spiral static stability from a bank angle of 0°

Question 8

SIDESLIP TARGET

Accepted Answer

- If one engine fails, the FAC modifies the sideslip indication slightly to show the pilot how much rudder to use to get the best climb performance - sideslip index on the PFD changes from yellow to blue

Question 9

Reduced Protections in Alternate Law

Accepted Answer

- LOAD FACTOR LIMITATION - LOW SPEED STABILITY - HIGH SPEED STABILITY

Question 10

How are the flight control surfaces controlled?

Accepted Answer

Flight control surfaces are all :
‐ Electrically-controlled
‐ Hydraulically-activated

stabilizer and rudder can also be mechanically-controlled
via side stick computers interpret pilot input and move the flight control surfaces

Question 11

How many flight control computers?

Accepted Answer

Seven flight control computers

2 ELACs (Elevator Aileron Computer) For :

Normal elevator and stabilizer control
Aileron control

3 SECs (Spoilers Elevator Computer) For :

Spoilers control
Standby elevator and stabilizer control

2 FACs (Flight Augmentation Computer) For : 
 *Electrical rudder control.

Question 12

Which computer controls the elevators and stabilizer in normal operation?

Accepted Answer

ELAC2 ELAC1 will takeover if failure With ELAC2 or associated hydraulics

Question 13

How many servo-jacks for each elevator?

Accepted Answer

2 servo-jacks for each elevator

Each servojack has three control modes :
• Active : The jack position is electrically-controlled
• Damping : The jack follows surface movement
• Centering : The jack is hydraulically retained in the neutral position

Question 14

Elevator Control Priorities

Accepted Answer

- Mechanical Trim - ELAC2 - ELAC1 - SEC2 - SEC1

Question 15

How many servo-jacks control each aileron surface?

Accepted Answer

Two servo-jacks per aileron Each servojack has two control modes : Active : Jack position is controlled electrically Damping : Jack follows surface movement

Flight Controls Flashcards

(25 cards)