Assembly & Rigging Flashcards
Define balance trim tab;
A balance trim tab produces an aerodynamic force on a control surface that aids the pilot in moving that surface. Attached to trailing edge of control surface, tab moves opposite the direction of control surface travel. AKA servo trim tab.
Define servo trim tab;
A servo trim tab produces an aerodynamic force on a control surface that aids the pilot in moving that surface. Attached to trailing edge of control surface, tab moves opposite the direction of control surface travel.
What are the four most common high lift devices?
Leading edge flaps, trailing edge flaps, slats, and slots.
Name three mechanical methods by which flight control systems may be actuated.
Cables, push-pull rods, and torque tubes.
What is the function of the cyclic pitch control of a helicopter?
It changes the pitch of the rotor blades at a particular point in their rotation to tilt the plane of the rotor. The cyclic pitch controls the lateral movement of the helicopter.
What is the function of the collective pitch control of a helicopter?
It changes the pitch of all the blades at the same time. The collective pitch controls the vertical flight of the helicopter.
What is the function of the tail rotor on a single main rotor helicopter?
The thrust from the tail rotor counteracts the torque of the main rotor to control the yaw of the helicopter.
What controls the auxiliary tail rotor of a single-rotor helicopter?
Control (foot) pedals change the pitch of the tail rotor blades to vary the thrust produced.
What are the three primary flight controls of an aircraft?
Ailerons, elevators, and rudders.
Name several secondary flight controls and describe their general purpose.
Secondary flight controls consist of various types of trim tabs such as balance tabs, anti-servo and servo tabs, and spring tabs. Their function is to assist the pilot in moving the controls and to trim the aircraft to fly hands-off.
Auxiliary flight controls include;
Various high lift devices used during low speed flight such as leading and trailing edge flaps, slats, slots, speed brakes, etc.
What are the three axes of an airplane?
Longitudinal, lateral, and vertical.
What are the most likely places for a control cable to wear or break?
Where the cables pass over pulleys or through fairleads.
What information is required before a cable rigging chart can be used?
The ambient temperature and the cable size.
What is the function of a cable tension regulator?
It automatically adjusts the cable tension to compensate for expansion and contraction in the aircraft structure.
