AERT 4040 Exam ACTUAL QUESTIONS
AND CORRECT ANSWERS
What method did the Wright brothers use to control roll? - CORRECT ANSWER They
developed a technique of wing warping
Density Altitude is used as a predictor of aircraft performance, not as a height reference. -
CORRECT ANSWER True
Density is - CORRECT ANSWER Mass per unit volume
The temperature and pressure conditions for a standard day are ______________. -
CORRECT ANSWER 59 degrees F / 15 degrees C and 29.92 in of Hg / 1013 mbar
What was unique about the engine that the Wrights used for their Flyer? - CORRECT
ANSWER It was the first time aluminum was used in the construction od an aircraft
The Critical Mach Number of an aircraft is the highest Mach Number the aircraft can travel
before structural damage is done to the airframe. - CORRECT ANSWER False
Air viscosity __________ as the air temperature increases. - CORRECT
ANSWER increases
The speed of sound in air is dependent upon the - CORRECT ANSWER Air
Temperature only
What did the Wright brothers think was the most difficult problem, thus the first problem they
attacked when building their Flyer? - CORRECT ANSWER How to control and
balance the aircraft
,An aircraft's Mach Number is the aircraft's - CORRECT ANSWER TAS divided by the
Local Speed of Sound
How did the Wrights correct their problem of roll reversal? - CORRECT
ANSWER They developed a movable rudder and connected it to the roll control
Wing Loading is: - CORRECT ANSWER the ratio of the aircraft weight to the surface
area of the wing
A moment is _________. - CORRECT ANSWER created when a force is applied at
some distance from an axis or fulcrum, producing rotation about that point
The angle of incidence of a wing is the angle between a line drawn through the 25% cord
points and a line drawn parallel to the lateral axis. - CORRECT ANSWER false
The center of gravity is the point at which __________. - CORRECT ANSWER all
weight is concentrated
The angle of attack of a wing is the angle between the wing's cord and the horizon -
CORRECT ANSWER false
Static pressure acts: - CORRECT ANSWER perpendicular to the surface that any air
molecules collide with.
Which formula or equation describes the relationship between force (F), acceleration (a) and
mass (m)? - CORRECT ANSWER f=ma
Total pressure is: - CORRECT ANSWER static pressure plus dynamic pressure
The chord of an airfoil is defined as ___________. - CORRECT ANSWER a measure
of the wing along the chordline, from the leading edge to the trailing edge
, Aspect Ratio of a wing is - CORRECT ANSWER the ratio of the wingspan to the
average cord
The camber of an airfoil: - CORRECT ANSWER is the maximum distance between
the cord and the mean camber line measured perpendicular to the cord
The axis is which the aircraft nose moves left or right about the center of gravity. -
CORRECT ANSWER yaw
The Mean Camber Line: - CORRECT ANSWER is a line drawn halfway between the
upper and lower surface of an airfoil
The General Gas Law sets the relationship between three properties of air: pressure (P),
density (ρ), and temperature (T). It is expressed as an equation where R is a constant for any
given gas. What is the correct expression of the General Gas Law. - CORRECT
ANSWER ρ = P/RT
The Law of Interaction states __________. - CORRECT ANSWER "For every action
there is an equal and opposite reaction."
Parasite drag is ___________. - CORRECT ANSWER made up of form, friction, and
interference drag
Accelerating the air that surrounds a moving object requires force, thus creating drag. This is
an example of _________ drag - CORRECT ANSWER Viscous Drag
Ground Effect __________. - CORRECT ANSWER Blocks the effect of Induced Drag
Drag that is produced simply due to the production of lift is called ________. - CORRECT
ANSWER Induced Drag
AND CORRECT ANSWERS
What method did the Wright brothers use to control roll? - CORRECT ANSWER They
developed a technique of wing warping
Density Altitude is used as a predictor of aircraft performance, not as a height reference. -
CORRECT ANSWER True
Density is - CORRECT ANSWER Mass per unit volume
The temperature and pressure conditions for a standard day are ______________. -
CORRECT ANSWER 59 degrees F / 15 degrees C and 29.92 in of Hg / 1013 mbar
What was unique about the engine that the Wrights used for their Flyer? - CORRECT
ANSWER It was the first time aluminum was used in the construction od an aircraft
The Critical Mach Number of an aircraft is the highest Mach Number the aircraft can travel
before structural damage is done to the airframe. - CORRECT ANSWER False
Air viscosity __________ as the air temperature increases. - CORRECT
ANSWER increases
The speed of sound in air is dependent upon the - CORRECT ANSWER Air
Temperature only
What did the Wright brothers think was the most difficult problem, thus the first problem they
attacked when building their Flyer? - CORRECT ANSWER How to control and
balance the aircraft
,An aircraft's Mach Number is the aircraft's - CORRECT ANSWER TAS divided by the
Local Speed of Sound
How did the Wrights correct their problem of roll reversal? - CORRECT
ANSWER They developed a movable rudder and connected it to the roll control
Wing Loading is: - CORRECT ANSWER the ratio of the aircraft weight to the surface
area of the wing
A moment is _________. - CORRECT ANSWER created when a force is applied at
some distance from an axis or fulcrum, producing rotation about that point
The angle of incidence of a wing is the angle between a line drawn through the 25% cord
points and a line drawn parallel to the lateral axis. - CORRECT ANSWER false
The center of gravity is the point at which __________. - CORRECT ANSWER all
weight is concentrated
The angle of attack of a wing is the angle between the wing's cord and the horizon -
CORRECT ANSWER false
Static pressure acts: - CORRECT ANSWER perpendicular to the surface that any air
molecules collide with.
Which formula or equation describes the relationship between force (F), acceleration (a) and
mass (m)? - CORRECT ANSWER f=ma
Total pressure is: - CORRECT ANSWER static pressure plus dynamic pressure
The chord of an airfoil is defined as ___________. - CORRECT ANSWER a measure
of the wing along the chordline, from the leading edge to the trailing edge
, Aspect Ratio of a wing is - CORRECT ANSWER the ratio of the wingspan to the
average cord
The camber of an airfoil: - CORRECT ANSWER is the maximum distance between
the cord and the mean camber line measured perpendicular to the cord
The axis is which the aircraft nose moves left or right about the center of gravity. -
CORRECT ANSWER yaw
The Mean Camber Line: - CORRECT ANSWER is a line drawn halfway between the
upper and lower surface of an airfoil
The General Gas Law sets the relationship between three properties of air: pressure (P),
density (ρ), and temperature (T). It is expressed as an equation where R is a constant for any
given gas. What is the correct expression of the General Gas Law. - CORRECT
ANSWER ρ = P/RT
The Law of Interaction states __________. - CORRECT ANSWER "For every action
there is an equal and opposite reaction."
Parasite drag is ___________. - CORRECT ANSWER made up of form, friction, and
interference drag
Accelerating the air that surrounds a moving object requires force, thus creating drag. This is
an example of _________ drag - CORRECT ANSWER Viscous Drag
Ground Effect __________. - CORRECT ANSWER Blocks the effect of Induced Drag
Drag that is produced simply due to the production of lift is called ________. - CORRECT
ANSWER Induced Drag
