Assembly and rigging Flashcards
(18 cards)
what is a servo tab
Used primarily on the large main control surfaces. They aid in moving the control surface and holding it in the desired position. Only the servo tab moves in response to movement by the pilot of the primary flight control
what is a balanced trim tab
designed to move in the opposite direction of the primary flight control. Thus, aerodynamic forces acting on the tab assist in moving the primary control surface
what is a spring tab
it is an auxiliary control that aids in moving the primary control surface by keeping a direct proportion of the deflection to the aerodynamic load imposed on the surface
name four high lift devices
leading edge flaps, slots, slats and trailing edge flaps
what are three mechanical methods used to actuate flight control systems
cable, push pull and torque tube
what is the purpose of a rotorcraft cyclic pitch control
it changes the pitch of each main rotor blade during a cycle of rotation
what is the purpose of the rotorcraft collective pitch control
it varies the lift of the main rotor(s) blade(s) simultaneously
what unit compensates for helicopter main rotor torque
an auxiliary or tail rotor
what controls a helicopter tail rotor
foot pedals
what flight control surfaces are considered the primary group
ailerons, elevators and rudder
what flight controls are included in the auxiliary group
wing flaps, spoilers, speed brakes, leading edge flaps and slots
what are the three main axes of an aircraft
vertical, longitudinal and lateral
where does breakage of control cables occur most frequently
where cables pass over pulleys and through fairleads
what items must be known before using a typical cable rigging chart
the size of the cable and ambient air temperature
what are cable tension regulators
they are mechanical devices that automatically maintain cable tension
what is a cable fairlead
a cable guide
what is the purpose of vortex generators
to provide for boundary layer air control
what tools are primarily used to check control surface travel
protractors, rigging fixtures, contour templates and rulers
