11.09 Flying Controls Flashcards
How is flutter and vibration eliminated on a control surface?
Hydraulic damping or static balancing
When do spoilers assist the flap system?
As ground spoilers - lift dump
What component maintains the cable temperature over varying temperatures?
Cable tension regulator
Movement around the lateral axis will do what to the aircraft
Change the angle of attack
What effect will there be if you select speed brakes out in a turn?
Both sets of spoilers will extend by a set amount
What prevents aerodynamic loads from pushing screwjack operated flaps back up?
A no-back brake
How is over run of a trimmable horizontal stabiliser prevents?
Switches and mechanical stops
What will occur at the control column if aileron trim is activated?
Moves the control column in the same direction
What is the meaning of the term turn coordination?
Control surfaces act in conjunction with eachother
What occurs if only one side of the flaps deploy?
Flap extension is automatically stopped
How is airflow maintained at high angles of attack of the aerofoil?
Using slotted slats
What is the result of the left and right wing ailerons both deflecting downwards together?
Droop assist for the flaps
If the flaps and slats are deployed, what is happening to the air loads on the aircraft?
Increase in lift and drag
Which flight controls could activate a take off warning?
- Flaps
- Slats
- Speed brakes
- THS
Extending flaps and slats will do what to the profile of a wing?
Increase camber and wing surface area
How does a fly by wire control system develop a control input?
Electrical signals transmitted to servo valves which regulate pressure at the actuator
Which way will surfaces move to give a left coordinated turn?
- Left aileron and roll spoilers up
- Right aileron down
- Rudder left
In the fly-by-wire system, how is the actuator hydraulic pressure regulated?
Servo-valves
What prevents excessive rudder control movement at high speeds?
Rudder limiter
What is the purpose of the THS?
Compensate for unbalance along longitudinal axis
How are spoilers retracted if hydraulic pressure is lost. if they are deployed?
Blown down by airflow
What axis does an aircraft roll around?
Longitudinal
What level of flight control is used to increase lift?
Secondary
Speed brakes on some aircraft double as what?
Roll spoilers
Operating a rudder trim switch will counter imbalances around which axis?
Vertical
What type of flap system provides the greatest amount of extra lift?
Triple slotted fowler flap
