WorksheetsAviation Control Systems Quiz
Total questions: 40
Worksheet time: 20mins
Artificial feel system is required for:
Direct mechanical linkage systems
Reversible flight control systems
Irreversible flight control systems
Stability about the axis parallel to the flight path is:
Lateral stability
Longitudinal stability
Directional stability
The purpose of rigging is to:
Maintain steady airflow over surfaces
Ensure correct sense movement of surfaces
Decrease pilot awareness
Aileron up-float rigging is carried out to:
Overcome aileron flutter at high speed
Provide instinctive control
Overcome aileron drag
The dihedral angle of a wing may be measured by placing a straight edge and level protractor on the:
Wing chord
Wing root
Front spar
Using a cloth on a stainless steel cable is a method of:
Inspecting for broken wires
Applying solvent
Inspecting for corrosion
After repairing a rudder, the surface should be rebalanced:
In normal flight position
To manufacturer's specifications
To its spanwise axis
If the aircraft is flying nose heavy, which direction would you move the elevator trim tab?
Up to move elevator up
Down to move elevator up
Up to move elevator down
The purpose of a turnbuckle in a flying control system is:
To enable the control cable to be cross-connected
To enable the range of movement of the control surface to be adjusted
To enable the cable tension to be adjusted
How do you check a cable for broken wires?
Use a magnifying glass
Slide a piece of soft wood over the cable
Run a rag over the cable
What will happen when a flap asymmetry occurs?
The pilot can still operate the flaps that is not jammed
The pilot can override the system and flaps can be operated
The flaps will stop moving and warning received in the cockpit
Fairleads should never deflect the alignment of a cable more than:
8 degree
12 degree
3 degree
How to adjust flight control cable tension?
Rotating the cable pulley
Turning the turnbuckle barrel
Adjusting the cable drum
The primary purpose of stall strips is to:
Provide added lift at slow speeds
Stall the inboard portion of the wings first
Provide added lift at high angles of attack
How does an aileron balance panel function?
A weight is installed ahead of the hinge line
Pressure changes deflect a hinged panel ahead of the aileron
The aileron is extended ahead of the hinge line
Proper wing twist can usually be checked by utilizing:
Bubble level and manufacturer fixtures
Straight edge, tape measure, square
Plumb bob, string, straight edge
A bi-planar block in a flying control chain assembly:
Transfer straight line motion to rotary motion
Ensures that a chain cannot be assembled incorrectly
Changes the plane of motion of the chain
During inspection of a differential-type aileron control, side to side movement causes:
The left aileron to move through a greater number of degrees than the right aileron
Each aileron to have greater up travel than down travel
Each aileron to have greater down travel than up travel
Differential control is associated with:
Trim
Aileron
Elevator
In a power-assisted flight control system, "feel" is supplied by:
Air loads
Stretching springs
Q' Feel
What is the primary source of directional stability for an airplane?
Vertical fin
Horizontal stabilizer
Center of gravity position
The hole in the end of a swaged end fitting is for:
Alignment of end fitting with barrel
Clearance to allow air to escape when fitting cable
Inspection to see if cable is fully in
If the aircraft is flying nose heavy, which direction would you move the elevator trim tab?
Down to move elevator up
Up to move elevator up
Up to move elevator down
The purpose of the Servo Valve in power-operated control is:
Revert system to manual operation
Provide pressure to operate control
Direct hydraulic fluid to jack
To secure a chain link, a spring clip:
Must always be used
Must never be used
May be used when specified
The purpose of an elevator trim tab is to:
Modify downward tail load eliminating control pressures
Provide horizontal balance allowing hands-off flight
Adjust upward tail load for different airspeeds
If control stick is moved rearward and left, the right aileron will move:
Down and elevator up
Up and elevator down
Down and elevator down
The stagnation point on an airfoil is where:
Suction pressure reaches maximum
Laminar flow becomes turbulent
Airflow is brought completely to rest
The purpose of spring tabs or servo tabs is to:
Make in-flight trim adjustments
Assist pilot in moving control surfaces
Contribute to static balance
A stick pusher is a device for:
Preventing the aircraft from getting into a stall
Assisting the pilot to move the controls against high air load
Automatically compensating pitch changes at high speed
Swaged terminals must be:
Corrosion treated
Pull tested
Checked with go-no-go gauge before and after swaging
The acute angle formed by chord line of a wing and the relative wind is:
Angle of incidence
Angle of dihedral
Angle of attack
On large aircraft using Fowler flaps, the flaps are normally operated using:
Hydraulic powered ball screwjacks
Pneumatic actuators
Hydraulic piston type actuators
Smallest size cable used in primary control systems:
5/16 inch
1/4 inch
1/8 inch
A 'fly by wire' aircraft controls surfaces by:
Computers and actuators
High power radio transmitters
Control rods and linkages
A wing mounted electrical stall warning vane:
Moves down at impending stall
Gives visual indication and moves up
Moves up at impending stall
If a tension regulator is not fitted, the cable tension correct at sea level will:
Be higher at high altitudes
Remain constant at all altitudes
Be lower at high altitudes
How to differentiate left-hand thread on a turnbuckle?
Hole on right-hand thread
No groove on left-hand thread
Groove on left hand
The purpose of the vertical fin is to provide:
Lateral stability
Longitudinal stability
Directional stability
what is the type flap shown?
fowler flap
split flap
slotted flap
itam flap
