Flight controls

Question 1

Primary flight controls

Answer 1

elevator, rudder, aileron

Question 2

Spoilers functions

Answer 2

Roll spoiler
speed brakes
ground spoilers

Question 3

Secondary flight controls

Answer 3

Flaps, spoilers, horizontal stab, aileron and rudder trim

Question 4

FCE? how many?
what does it do?

Answer 4

Flight control electrical system (FCE)
2
FCE 1 - pitch trim backup and flaps
FCE 2 - normal pitch trim and spoilers

Question 5

Flap position degrees and airspeed limits

Answer 5

Flap 1 - 8° 180kts
Flap 2 - 26° 170kts
Flap 3 -26° 170kts
Flap Full - 35° 160kts

Question 6

What are purpose of spoilers

Answer 6

1 - Ground spoiler
2 - Roll spoiler - flaps not at 0° and deflection of control horn 30°
3 - Speed brake - only with flaps at 0° (up)

Question 7

Requirement for ground spoilers to deploy

Answer 7

1 - Aircraft on the ground
2 - Thrust levers -idle-
3 - Ground spoilers -armed-

35° in 1.2 seconds

Question 8

Do speed brakes work with flaps deployed?

Answer 8

No
will not extend with flaps beyond 0°
if they are out when you command flaps beyond 0° the spoilers will stow

Question 9

What causes speed speed brakes retract?

Answer 9

airspeed below 110 kts
or advancing thrust levers with speed brakes out

Question 10

Describe the flap system

Answer 10

Four positions

Four panels

trailing edge fowler flaps

mechanically actuated with jackscrews

powered by DC electric motor

FCE (flight control electronics) operates the PDU (power delivery unit) driving 6 flexible shafts to operate the flap actuators

Question 11

Describe spring loaded rudder booster system (SLRB)

Answer 11

provides force assistance to the pilot in the rudder control system incase of thrust asymmetry.

commanded by FADEC during asymmetric thrust

Question 12

What system other than the YD prevents Dutch roll?

Answer 12

Ventral rudder control (VRC)

acts as a transparent yaw damper

starts at 60 kts ends at YD engagement (enters streamlining mode)
and begins again with YD turned off

Question 13

Roll/Yaw runaway protection

Answer 13

3 second timer
the system stops the actuator from moving after 3 seconds

For both roll trim and rudder trim

Question 14

Where is roll trim tab located?

Answer 14

on left wingtip

Question 15

How to detect a roll/rudder trim failure?

Answer 15

Switch no longer moves the trim tab.

no CAS message

Question 16

Describe the elevator system

Answer 16

pair of elevator surfaces
-25° (pitch up) to +15° (pitch down)
cables connecting to torque tubes

elevator tab mechanism (automatic deflection when elevator surface moves)

Question 17

What happens when YD off

Answer 17

Yaw damper turns on
Ventral rudder turns on