Flight Contorls Flashcards
(53 cards)
What 2 systems make up the Flight controls
Primary flight controls
Flaps and slats
Normal levels of primary flight controls and flap/slats control
Primary –> Normal - Secondary - Direct
Flaps/Slats —> Primary - Secondary - Alternate
What does the 787 have to fix control jams
Jam override Mechanism
How does the Fly-by-wire work
Norm -
Pilot - ACES’s - PFC’s - ACE’s - Actuators
Secondary
Pilot - ACES - Actuators
Where can you see the Flight control operating mode
Flight control Synoptic
Describe the flaps and Slats
Fly-by-wire
Slats - 6 and 1 Krueger flaps
trailing edge flaps - single slotted flaps inbd and outbd
What are the positions of the Slats and Krueger flap
Slats - Cruise/Take off/Ldg
Krueger flap - Retract or Deployed
Describe the Flap settings
7 positions
FL UP FL 1 (Slats only to mid) Gate 1 FL 5 FL 15 FL 20 Gate 2 FL 25 (Slats only to full) FL 30
Slats extend at Flap 1 position (middle) and Flap 25 (full)
T/O - 5, 15, 20
LDG - 25, 30
What flight controls are available incase of loss of all three HYD
Stabilizers
2 Spoilers
(both Electric)
How many ACE’s
4
How many spoilers
7 per wing
When is rudder effective
> 60 kts
What are the 4 flight control power sources
remember one it the back up
Left HYD
Center HYD
Right HYD
Electirc
What provides Electrical power for control services
PMG’s - 3 perminant magnetic generators
- 2 on left one on right
if no gen rotation - 28 VDC system on main Batt
What are the flight control surface locks
and what if they are left on
Maint to provent surface movement (tail and Wings)
if left on auto unlock at >40 kts on T/O
What are Back drive actuators
position the controls so as to simulate the movement of controls
Which FC mode can be selected by a switch
Direct
When is back pressure required when banking
30 deg
How is pitch provided
Elevators and Horizontal stabilizer
auto - gear, flap, speed brakes, config changes < 30 deg bank
What controls the Elevators
2 actuators each driven by different HYD systems
What are the Pitch enevlope protections
Stall - PFC limit trim to Vma
Overspeed - Trim
tailstrike - Auto elevator defliction
Can you trim with A/P
no
What is the Trim Reference Speed
Speed A/C would stabilize if there were no control column inputs
How do the PFC’s reconfigure the A/C
Auto adjust the stabilizer to reduce forces and streamline the A/C
