Assembly and Rigging Flashcards
What are three types of commonly used flight control systems
They are the cable, The push pull tube, And the torque tube system.
The cable system is most widely used because deflections of the structure to which it is attached do not affect the operation
What is used in large metal aircraft to keep control cable tension within acceptable limits
Cable tension regulator
What is a fairlead
It is a cable guide that slightly deflects straight run cables around structural features such as bulkheads or lightning holes
How much is cable to flexion acceptable due to fairleads
3°
Where does failure of a common cable occur most frequently
Where cables pass over pulleys and through fairleads
Which flight control services are considered the primary group
Elevators, ailerons, Rudder
Which flight controls are considered the secondary group
The trim tabs, spring tabs, wing flaps, servo tabs, anti-servo tabs,
They do not alone cause rotation of the aircraft about its axis
Which flight controls are in the auxiliary group
Flaps, speed breaks, spoilers, slats, leading edge slats, slots
How do wing flaps perfect landing speed and approach angle of an aircraft
The use of flaps increase the camber of a wing and therefore the lift of the wing, making it possible for the speed of the aircraft to be decreased without decreasing the lift produced by the wing.
This permits a steeper glided angle and lower speed to be obtained for the landing approach
What is a balance tab
It is an auxiliary control with fixed linkage that is designed in such a way that when the primary control surface is moved the tab moves in the opposite direction
Arrow dynamic forces acting on the tab assist the pilot and moving the control surface
What is a trim tab
It is an auxiliary control attached to the trailing edge of a primary control service that is positioned by moving of the cockpit control to reduce the workload on the pilot in maintaining a desired flight attitude
What is the purpose of the collective pitch control on a helicopter
It is used to change the pitch of the main rotor blade therefore increasing or decreasing lift
Why is it important for the blades of a helicopter rotor system to be tracked
To reduce vertical vibrations
What is the most efficient way to check a helicopter rotor for dynamic balance
Use of a balance analyzer computer
What unit on a helicopter is used to compensate for the torque created by the main rotor
The tail rotor
What control operates the helicopter tail rotor
The anti-torque petals
What are the three axis of an aircraft, and which control Surfaces Causey aircraft to move about each axis
They are longitudinal, lateral, vertical
Longitudinal axis Extends from nose to tail and uses Ailerons for a roll
Lateral Axis extend from wingtip to wing tip Using the elevators for pitch
Vertical axis passes through the center of the airframe from top to bottom and uses the rudder for y’all
When installing an aircraft bolt what precautions would you take regarding the position of the bolt
Where possible, the bolt head should be positioned on top with when the bolt is installed vertically, and the bolt head should be forward when it is installed horizontally
How is the proper torque corrected for during assembly and rigging in some single engine Aircraft
The leading edge of the vertical stabilizer offset to the longitudinal center line to counteract engine torque
What reference publications should be used to rig aircraft, including the control system
You should refer to the aircraft specifications or type certificate data sheet issued by the FAA and also the maintenance manual issued by the manufacture
What are vortex generators
Small, low aspect ratio airfoils mounted on The upper surface of the wing. Their function is to dampen shock induced separation of the airstream which results in a stall
What is a servo tab
A cockpit control adjustable tab attached to the trailing edge of a primary control surface. The tab moves opposite the direction of the control surface producing an Aerodynamic force that moves the primary
What factors are used to determine the proper cable tension
The size of the cable and the outside temperature
Where can you find instructions for jacking one wheel of an aircraft to change a tire
The aircraft maintenance manual
Why do you control services need to be statically balanced
Because an out of balance control surface can cause severe flutter
What is a spring tab
A flight control that uses a spring to assist control service movement at high speeds
