Secondary Flight Control

Question 1

Secondary flight controls

Answer 1

Secondary flight controls are considered as those which do not affect roll,pitch or yaw

~trailing edge flaps
~trimming devices
~leading edge devices
~spoliers
~speed brakes

Question 2

Limit speeds

Answer 2

~Vf» desgin flap speed

~Vfe&raquo_space; maximum flap extended speed

Question 3

Assymmetric protection

Answer 3

~detect asymmetry and immediatetlu isolate the faluty side
~ interrupt flap deployment
~isolate the flap sector handle
~possibly lock the devices in potion top prevent any further movement ,requires reset on the ground

Question 4

Leading edges

Answer 4

~droop nose»a movable device that moves downwards to increase wing camber
~kruger flaps/leading edge flap
~slats

Question 5

Flap position measurement?

Answer 5

Measured in degrees from chord line

Question 6

Flap load relief or blow back

Answer 6

When aerodynamic forces are too strong ,they pushed back in the flaps/slats to a lower setting “by pressure relief valve”

Question 7

Leading edge flaps?

Answer 7

Aim to delay the max stalling angle

Question 8

Kruger flaps

Answer 8

Increase camber whilst retaining a very small leading edge radius.
Wing root stalls before

Question 9

Auto slats

Answer 9

If stall warning indicates a high AoA slats may extended automatically and retracted again after the warning had ceased

Question 10

To activate ground spoilers at touch down requirements?

Answer 10

~lever in arm position
~main wheel spin up
~thrust levers at idle

Even spoilers are equipped with blow back systems,to reduce the aerodynamic froces if they are too excessive