Flight Control Systems Flashcards
(25 cards)
How are the controls connected to hydraulic system?
Mechanically linked to hydraulic power control units
Longitudinal Control
Horizontal Stabilizer
Latitudinal Control
Aileron and Spoilers
How many spoilers per wing
4
Purpose of Spoilers
Speed brakes and lateral control surface
How many flight spoilers
2 Per Side
How many ground spoilers
2 Per side
Where are the ground spoilers on wing
Inside
Where are the flight spoilers on the wing?
Outside
What allows bypassing jammed controls?
Transfer mechanisms
Does the pilot control ailerons or spoilers?
Ailerons
How are pilot and copilot controls connected?
Cable drive system
How far until spoiler deployment?
1.5 units or 10 degrees
What is the elevator feel system
Provided simulated aerodynamic forces to prevent stalls. Failures can cause up to 90 lbs of force to flare
Mach trim system
.615 mach and above
Speed Trim System
Low gross weight, aft center of gravity and high thrust settings
Returns aircraft tot trimmed speed by forcing stabilizer in opposite direction
Conditions for Speed Trim System
100 knots-0.5 mach, 10 seconds after takeoff, 5 seconds after trim release, autopilot not engaged, sensed trim requirement
When is Elevator feel system not used
Below 100’ RA
On the ground
Autopilot engaged
When and what is hydraulic pressure to the rudder reduced
Above 135 knots reduced by 25%
What is the point of flap load relief?
Protect Flaps from excessive air loads
Types of flaps
Leading Edge Slats
Krueger Type Leading Edge Flaps
Double Slotted Trailing Edge Flaps
When is Autoslats available?
1,2,5,10,15 and 25 approaching stall conditions
Purpose of yaw damper
Dutch roll prevention, gust damping, turn coordination
Can you extend and retract the leading edge flaps and slats with the alternate flap extention?
You can extend but not retract
