Aircraft Structural Assembly and Rigging Flashcards
What is the function of a vortex generator?
It is designed to delay or prevent separation of the boundary layer.
what are the three axes of the airplane?
Longitudinal, lateral, and vertical
what are the three primary flight controls of an aircraft?
The ailerons, elevator and rudder
Name several secondary flight control and describe their general purpose?
secondary flight controls consist of various types to 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
Name several types of auxiliary flight controls and describe their general purpose?
The auxiliary flight controls consist of the various high lift devices used during low speed flight such as leading and trailing edge flaps, slats, slots, speed brakes, etc
What is a servo trim tab?
It is an auxiliary control, positioned by the movement of a cockpit control and designed to create aerodynamic forces to assist in moving a control surface
What is a spring tab?
it is an auxiliary control designed to aid the movement of a primary control at high speed when control forces become too high
What is a balance trim tab?
It is an auxiliary control designed to create aerodynamic forces to assist in moving a control surface. the tab is positioned by a control rod connected to the fixed surface on the same side as the horn on the tab
What are four most common types of high lift devices?
Leading and trailing edge flaps, slats, and slots
Describe some of the tools used to check control surface travel?
a universal propeller protractor or special control surface protractor
Name three mechanical methods by which flight control system may be actuated?
Cables, push pull rods, and torque tubes
what is a fairlead?
It is a device to prevent a cable from rubbing on the aircraft structure
What are the most likely places for a control cable to wear or break?
where the cable 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 adjust the cable tension to compensate for expansion and contraction in the aircraft structure
Describe the function of a rotorcraft collective pitch control
The collective control cause each rotor blade to change its pitch angle by the same amount, thus increasing or decreasing the lift produced by the rotor
*Describe the function of rotorcraft cyclic pitch control?
The cyclic control tilts the main rotor disc by changing the pitch angle of each rotor blade during its cycle of rotation, which cause the helicopter to move in the direction the rotor tilts
What mechanism is most commonly used to compensate for the torque produced by the main rotor of a helicopter?
The tail (or anti-torque) rotor
How is the amount of thrust produced by the tail rotor controlled?
By moving the foot pedals
Why should your control surfaces be locked when an aircraft is parked?
To prevent damage from the wind
