Airframe Oral Questions | Chandler-Gilbert
Community College | AMT 228
Save
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 an airplane? Longitudinal. lateral. and vertical.
What are the three primary flight controls of an aircraft? The ailerons. elevator. and rudder.
Name several secondary flight controls and describe Secondary flight controls consist of various types to trim tabs such as
their general purpose? 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 The auxiliary flight controls consist of the various high-lift devices used
describe their general purpose? 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
speeds 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 A universal propeller protractor or special control surface protractor.
travel?
, Name three mechanical methods by which flight control Cables. push-pull rods. and torque tubes.
systems may be actuated.
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 Where the cables pass over pulleys or through fairleads.
wear or break?
What information is required before a cable rigging chart The ambient temperature and the cable size.
can be used?
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.
Describe the function of a rotorcraft collective pitch The collective control causes each rotor blade to change its pitch angle by the
control. same amount. thus increasing or decreasing the lift produced by the rotor.
Describe the function of a 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 causes the helicopter to move
in the direction the rotor tilts.
What mechanism is most commonly used to The tail (or anti-torque) rotor.
compensate for the torque produced by the main
rotor of a helicopter?
How is the amount of thrust produced by the tail rotor By moving the foot pedals.
controlled?
Why should control surfaces be locked when an aircraft To prevent damage from the wind.
is parked?
What is the major type of damage to aluminum Corrosion
structures that is caused by exposure to the
weather?
Name several methods for forming sheet metal? Bending or folding. stretching. shrinking. bumping. and crimping.
What are the dimensions of a properly formed rivet The head should be 1 1/2 times the shank diameter in width and ½ the shank
head? diameter in height.
Describe the markings found on the heads of A. B. D. A rivets are plain. B rivets have a cross. D rivets have a raised dot. AD rivets have a
AD. and DD rivets. dimple. and DD rivets have a double dash.
What happens to the stem of a self-plugging (friction The stem is pulled until it snaps off and the remaining projecting part is trimmed
lock) rivet when the rivet is installed? flush with the head.
Name at least three types of self-plugging mechanical CherryMax. CherryLock. Olympic-locs. andHuck.
lock rivets.
What is the difference between the tools required to pull CherryLock rivets require a tool for each different size and head shape. while one
a CherryLock rivet and a CherryMax rivet? pulling tool will set any size Cherry Max rivet.
Community College | AMT 228
Save
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 an airplane? Longitudinal. lateral. and vertical.
What are the three primary flight controls of an aircraft? The ailerons. elevator. and rudder.
Name several secondary flight controls and describe Secondary flight controls consist of various types to trim tabs such as
their general purpose? 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 The auxiliary flight controls consist of the various high-lift devices used
describe their general purpose? 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
speeds 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 A universal propeller protractor or special control surface protractor.
travel?
, Name three mechanical methods by which flight control Cables. push-pull rods. and torque tubes.
systems may be actuated.
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 Where the cables pass over pulleys or through fairleads.
wear or break?
What information is required before a cable rigging chart The ambient temperature and the cable size.
can be used?
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.
Describe the function of a rotorcraft collective pitch The collective control causes each rotor blade to change its pitch angle by the
control. same amount. thus increasing or decreasing the lift produced by the rotor.
Describe the function of a 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 causes the helicopter to move
in the direction the rotor tilts.
What mechanism is most commonly used to The tail (or anti-torque) rotor.
compensate for the torque produced by the main
rotor of a helicopter?
How is the amount of thrust produced by the tail rotor By moving the foot pedals.
controlled?
Why should control surfaces be locked when an aircraft To prevent damage from the wind.
is parked?
What is the major type of damage to aluminum Corrosion
structures that is caused by exposure to the
weather?
Name several methods for forming sheet metal? Bending or folding. stretching. shrinking. bumping. and crimping.
What are the dimensions of a properly formed rivet The head should be 1 1/2 times the shank diameter in width and ½ the shank
head? diameter in height.
Describe the markings found on the heads of A. B. D. A rivets are plain. B rivets have a cross. D rivets have a raised dot. AD rivets have a
AD. and DD rivets. dimple. and DD rivets have a double dash.
What happens to the stem of a self-plugging (friction The stem is pulled until it snaps off and the remaining projecting part is trimmed
lock) rivet when the rivet is installed? flush with the head.
Name at least three types of self-plugging mechanical CherryMax. CherryLock. Olympic-locs. andHuck.
lock rivets.
What is the difference between the tools required to pull CherryLock rivets require a tool for each different size and head shape. while one
a CherryLock rivet and a CherryMax rivet? pulling tool will set any size Cherry Max rivet.
