AERT 4040 Mid-Term Exam QUESTIONS
AND CORRECT ANSWERS
Slow activation of the elevators during the spin allows the spin to accelerate. This makes for
a much easier and smoother recovery - CORRECT ANSWER False
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
How did the Wrights correct their problem of roll reversal? - CORRECT
ANSWER They developed a movable rudder and connected it to the roll control
Air viscosity __________ as the air temperature increases. - CORRECT
ANSWER Increases
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
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
What method did the Wright brothers use to control roll? - CORRECT ANSWER They
developed a technique of wing warping
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
An aircraft's Mach Number is the aircraft's - CORRECT ANSWER TAS divided by the
Local Speed of Sound
, The speed of sound in air is dependent upon the - CORRECT ANSWER Air
temperature only
Density is - CORRECT ANSWER Mass per unit volume
Density Altitude is used as a predictor of aircraft performance, not as a height reference. -
CORRECT ANSWER True
Total pressure is: - CORRECT ANSWER static pressure plus dynamic pressure
Aspect Ratio of a wing is - CORRECT ANSWER the ratio of the wingspan to the
average cord
A moment is _________. - CORRECT ANSWER created when a force is applied at
some distance from an axis or fulcrum, producing rotation about that point
Which formula or equation describes the relationship between force (F), acceleration (a) and
mass (m)? - CORRECT ANSWER F = ma
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 camber of an airfoil: - CORRECT ANSWER is the maximum distance between
the cord and the mean camber line measured perpendicular to the cord
The Mean Camber Line: - CORRECT ANSWER is a line drawn halfway between the
upper and lower surface of an airfoil.
Wing Loading is: - CORRECT ANSWER the ratio of the aircraft weight to the surface
area of the wing
AND CORRECT ANSWERS
Slow activation of the elevators during the spin allows the spin to accelerate. This makes for
a much easier and smoother recovery - CORRECT ANSWER False
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
How did the Wrights correct their problem of roll reversal? - CORRECT
ANSWER They developed a movable rudder and connected it to the roll control
Air viscosity __________ as the air temperature increases. - CORRECT
ANSWER Increases
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
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
What method did the Wright brothers use to control roll? - CORRECT ANSWER They
developed a technique of wing warping
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
An aircraft's Mach Number is the aircraft's - CORRECT ANSWER TAS divided by the
Local Speed of Sound
, The speed of sound in air is dependent upon the - CORRECT ANSWER Air
temperature only
Density is - CORRECT ANSWER Mass per unit volume
Density Altitude is used as a predictor of aircraft performance, not as a height reference. -
CORRECT ANSWER True
Total pressure is: - CORRECT ANSWER static pressure plus dynamic pressure
Aspect Ratio of a wing is - CORRECT ANSWER the ratio of the wingspan to the
average cord
A moment is _________. - CORRECT ANSWER created when a force is applied at
some distance from an axis or fulcrum, producing rotation about that point
Which formula or equation describes the relationship between force (F), acceleration (a) and
mass (m)? - CORRECT ANSWER F = ma
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 camber of an airfoil: - CORRECT ANSWER is the maximum distance between
the cord and the mean camber line measured perpendicular to the cord
The Mean Camber Line: - CORRECT ANSWER is a line drawn halfway between the
upper and lower surface of an airfoil.
Wing Loading is: - CORRECT ANSWER the ratio of the aircraft weight to the surface
area of the wing
