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AT 116 FINAL COMPLETE EXAM WITH QUESTIONS AND VERIFIED ANSWERS
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AT 116 FINAL COMPLETE EXAM WITH QUESTIONSAND VERIFIED ANSWERS
Which of the following is NOT a way to increase the camber of the airflow over
the top of the wing?
A. Increase the camber shape of the top of the wing.
B. Increase the angle of attack of the wing.
C. Make the relative wind flow upward toward the wing.
D. Increase the airflow (airspeed) of the air flowing over the wing. - ANSWER
B
What is the definition of a "chord line"?
A. It is the curved shape over the top of the wing.
B. it is a line that runs from the leading edge of the wing to the trailing edge of
the wing.
C. It is the direction the air flows around the wing. - ANSWER B
Which of the following is true of Bernoulli's principle?
A. The Bernoulli principle acts perpendicular to the relative wind.
B. Bernoulli's principle is the same as lift.
C. The Bernoulli effect becomes greater as the venturi size gets larger. -
ANSWER A
True or False. The relative wind always blows in the opposite direction that you
are moving. - ANSWER True
What is the definition of a stall?
A. The aircraft engine stops running.
B. The airflow over the wing no longer stays attached to the wing.
C. The air is flowing too slowly across the wings. - ANSWER B
True or False. You can only increase the AOA by tipping the wing up to a
higher angle - ANSWER False
True or False. The movement of flight controls can change the angle between
the cord line and the Relative wind. - ANSWER True
,The angle between the chord line of the wing and the longitudinal axis of the
aircraft is called what?
A. Angle of Attack
B. Differential angle
C. Positive pressure angle
D. Angle of Incidence - ANSWER D
True or False. The Bernoulli effect on a wing can create both lift and thrust. -
ANSWER True
Whichoftherlowing:is Nor one or tile types of drag acting on an aircraft in
flight?
A. Pressure drag.
B. Interference drag.
C. Induced drag.
D. Correcendent drag. - ANSWER D
What drag results from the creation of lift?
A. Pressure Drag
B. Correcedent Drag
C. Induced Drag
D. Interference Drag - ANSWER C
How does the wing tip vortex create "drag"?
A. The turbulence of the swirling vortex creates low pressure areas at the wing
tips.
B. The mixing of the high pressure into the low pressure reduces the differential
pressure
between the top of the wing and the bottom of the wing.
C. The vortex adds to the friction of the air passing over the wing.
D. The vortex tips the lift vector slightly backwards - ANSWER B
How can you reduce the pressure drag on an object?
A. Make the object smoother.
B. Reduce the frontal area on the object.
C. Add a "boat tail" to the object.
D. Both b and c. - ANSWER D
,How do you reduce Interference Drag?
A. Make the aircraft skin smoother.
B. Reduce the frontal area of the object.
C. Add fillets and fairings.
D. None of these answers are correct. - ANSWER C
What is the relationship of the Bernoulli Vector (lift) with regard to the relative
wind?
A. Perpendicular
B. Parallel
C. At an acute angle
D. Inversely proportional - ANSWER A
Which of the following is true of the pressure wave generated by the wing tip
vortex?
A. It is perpendicular to the relative wind.
B. It decreases in strength as the vortex gets stronger.
C. It moves ahead of the wing at subsonic speeds.
D. It reduces the effect of the drag vector. - ANSWER C
What is the difference between a winglet and a sharklet?
A. There is no real difference.
B. A winglet sticks up and a sharklet hangs down.
C. The winglet was developed for Boeing and the sharklet was developed for
Airbus.
D. Both a. and c. - ANSWER D
True or False: A winglet creates "Thrust". - ANSWER True
What is the disadvantage of a high aspect ratio wing?
A. The maneuverability of the aircraft decreases.
B. The wing creates poor lift.
C. The wing creates additional induced drag. - ANSWER A
Which of the following is true of the maximum lift produced by a high aspect
ratio wing?
, A. The high aspect ratio wing produces more lift than a low aspect ratio wing of
the same surface area.
B. The high aspect ratio wing is stronger than a low aspect ratio wing.
C. The high aspect ratio wing produces its peak lift over a more narrow range of
AOA than does a low aspect ratio wing. - ANSWER C
True or False: The wingtip vortex bends the relative wind to allow the winglet
to produce drag. - ANSWER False
True or False: An aspect ratio of 6 is a higher aspect ratio than 17. - ANSWER
False
True or False
A wing with a high aspect ratio produces lift over a wider range of angles of
attack than does a wing with a low aspect ratio? - ANSWER False
Which of the following is NOT a way to increase the effective aspect ratio of a
wing?
A. Add vortex generators.
B. Create a joined wing design.
C. Put drooping tips or end plates on the wing tip.
D. Add missile launchers or fuel tanks at the wing tip. - ANSWER A
True or False: The airplane on the left below has a high aspect ratio wing. -
ANSWER True
Which of the following is true of the performance of an airfoil?
A. The size of the airfoil determines its lift performance.
B. The shape of the airfoil determines its lift performance.
C. The speed of the air determines its lift performance. - ANSWER B
Which of the following is the name for the imaginary line that runs from the
leading edge of the wing to the trailing edge of the wing?
A. Camber line
B. Chord line
C. Relative wind line
D. Lift line - ANSWER B
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