Flight Controls

Question 1

What is the maximum pitch up in normal law for all configurations?

At what nose up pitch do the flight directors disappear?

Answer 1

30 NU clean to config 3 (25 low speed)
25 NU config full (20 low speed)

Flight directors disappear at 25 NU

Question 2

What is the maximum pitch down in normal law for all configurations?

At what pitch down do the flight directors disappear?

Answer 2

15 ND in all config

Flight directors disappear at 13 ND

Question 3

What protections do you have in Normal law?

Answer 3

Pitch protection
Roll protection
High speed protection
Load factor protection 
AoA protection

Question 4

What protections do you have in Alternate Law?

Answer 4

Only load factor protection.
Max RoT is 30 degrees per second

Alternate Law with protections you also have high and low speed stabilities.

Question 5

What protections do you have in Direct Law?

Answer 5

None

Max RoT is 30 degrees per second

Question 6

What protections do you have in Mechanical Law?

Answer 6

None

Question 7

How are pitch and roll controlled in Normal Law?

Answer 7

Pitch = load factor

Roll = rate of roll

Question 8

How are pitch and roll controlled in Alternate Law?

Answer 8

Pitch = load factor

Roll = direct input

Question 9

How are pitch and roll controlled in Direct Law?

Answer 9

Pitch = direct input

Roll = direct input

Question 10

How are pitch and roll controlled in Mechanical Law?

Answer 10

Pitch = direct input, controlled with stabiliser only

Roll = direct into, controlled by rudder only

Question 11

What defines Abnormal Law? (pitch up and down, and bank)

Answer 11

Greater than 50 NU
Greater than 30 ND
Greater than 125 AoB

Question 12

How is roll protected in Normal Law?

What is the max RoT?

Answer 12

33 AoB max neutral stick, anything past this must be held

Max AoB = 67
AP/FD disconnect at 45

Max RoT = 15 degrees per second

Question 13

What is Vmo/Mmo?

Will the aircraft allow you to go beyond these speeds?

At what increment past Vmo/Mmo will the AP disconnect?

Answer 13

Vmo/Mmo = 350kts/.82M

No, the aircraft won’t allow you to go beyond Vmo/Mmo in Normal Law. Gives pitch up authority you can’t override. In other laws yes you can.

AP disconnects at Vmo + 6 and Mmo + 0.1

Question 14

What are the Load Factor limits in all applicable laws?

(normal, alternate and abnormal)

Answer 14

+2.5g to -1g Clean

+2g. to 0g Any other config

Question 15

What is the difference in Stall protection between Normal Law and Alternate Law (with protections)?

Answer 15

Normal law you have V alpha protection and V alpha max, as well as Alpha floor.

In Alternate Law you only have Vls and Vsw, as well as a pitch down command you CAN override