Ground Instructor: Knowledge + FOI
Final Exam with Guaranteed Pass
Solutions (2025-2026) Updated.
SU 1: Airplanes and Aerodynamics
When an airplane is forced into an accelerated stall at twice its normal stalling speed, what is
the approximate load factor? - Answer 4 G's
SU 1: Airplanes and Aerodynamics
A sweptback wing has a tendency to stall at the ______ first and progress ________. - Answer
wingtip; inward to the wing root
SU 1: Airplanes and Aerodynamics
Centrifugal force is greater than the horizontal component of lift in _________ turns - Answer
skidding
SU 1: Airplanes and Aerodynamics
Centrifugal force is less than the horizontal component of lift in _________ turns - Answer
slipping
SU 1: Airplanes and Aerodynamics
The quality of an aircraft that permits it to be operated easily and to withstand the stresses
imposed on it is the ___________ of the aircraft - Answer maneuverability
SU 1: Airplanes and Aerodynamics
The capability of an aircraft to respond to the pilot's inputs is its ___________ - Answer
controllability
SU 1: Airplanes and Aerodynamics
,The tendency of an aircraft to develop forces that restore it to its original condition is known as
its _________. - Answer stability
SU 1: Airplanes and Aerodynamics
Which type of flap creates the greatest change in pitching moment?
A. Plain
B. Split
C. Fowler - Answer C. Fowler
SU 1: Airplanes and Aerodynamics
An aircraft wing is designed to produce lift resulting from
A. negative air pressure below the wing's surface and positive air pressure above the wing's
surface
B. positive air pressure below the wing's surface and negative air pressure above the wing's
surface
C. a larger center of pressure above the wing's surface and a lower center of pressure below the
wing's surface - Answer B. positive air pressure below the wing's surface and negative air
pressure above the wing's surface
SU 1: Airplanes and Aerodynamics
During flight with zero angle of attack, the pressure along the upper surface of a wing would be
A. equal to atmospheric pressure
B. less than atmospheric pressure
C. greater than atmospheric pressure - Answer B. less than atmospheric pressure
,SU 1: Airplanes and Aerodynamics
Why does increasing speed also increase lift?
A. the increased velocity of the relative wind overcomes the increased drag
B. the increased impact of the relative wind on the airfoil's lower surface creates a greater
amount of air being deflected downward
C. the increased speed of the air passing over an airfoil's upper surface increases the pressure,
thus creating a greater pressure differential between the upper and lower surface - Answer
B. the increased impact of the relative wind on the airfoil's lower surface creates a greater
amount of air being deflected downward
SU 1: Airplanes and Aerodynamics
The resistance, or skin friction, due to the viscosity of the air as it passes along the surface of a
wing is called
A. form drag
B. profile drag
C. parasite drag - Answer B. profile drag
SU 1: Airplanes and Aerodynamics
As airspeed decreases in level flight, total drag of an aircraft becomes greater than the total drag
produced at the maximum lift/drag speed because of the
A. decrease in induced drag
B. increase in induced drag
C. increase in parasite drag - Answer B. increase in induced drag
, SU 1: Airplanes and Aerodynamics
Which statement is true regarding airplane flight at L/D_max?
A. any angle of attack other than that for L/D_max increases parasite drag
B. any angle of attack other than that for L/D_max increases the lift/drag ratio
C. any angle of attack other than that for L/D_max increases total drag for a given airplane's lift -
Answer C. any angle of attack other than that for L/D_max increases total drag for a given
airplane's lift
SU 1: Airplanes and Aerodynamics
Which statement describes the relationship of the forces acting on an aircraft in a constant-
power and constant-airspeed descent?
A. thrust is equal to drag; lift is equal to weight
B. thrust is equal to drag; weight is greater than lift
C. thrust is greater than drag; weight is greater than lift - Answer A. thrust is equal to drag;
lift is equal to weight
SU 1: Airplanes and Aerodynamics
At a constant velocity in airflow, a high aspect ratio wing will have (in comparison with a low
aspect ratio wing)
A. increased drag, especially at a low angle of attack
B. decreased drag, especially at a high angle of attack
C. increased drag, especially at a high angle of attack - Answer B. decreased drag, especially
at a high angle of attack
SU 1: Airplanes and Aerodynamics
Final Exam with Guaranteed Pass
Solutions (2025-2026) Updated.
SU 1: Airplanes and Aerodynamics
When an airplane is forced into an accelerated stall at twice its normal stalling speed, what is
the approximate load factor? - Answer 4 G's
SU 1: Airplanes and Aerodynamics
A sweptback wing has a tendency to stall at the ______ first and progress ________. - Answer
wingtip; inward to the wing root
SU 1: Airplanes and Aerodynamics
Centrifugal force is greater than the horizontal component of lift in _________ turns - Answer
skidding
SU 1: Airplanes and Aerodynamics
Centrifugal force is less than the horizontal component of lift in _________ turns - Answer
slipping
SU 1: Airplanes and Aerodynamics
The quality of an aircraft that permits it to be operated easily and to withstand the stresses
imposed on it is the ___________ of the aircraft - Answer maneuverability
SU 1: Airplanes and Aerodynamics
The capability of an aircraft to respond to the pilot's inputs is its ___________ - Answer
controllability
SU 1: Airplanes and Aerodynamics
,The tendency of an aircraft to develop forces that restore it to its original condition is known as
its _________. - Answer stability
SU 1: Airplanes and Aerodynamics
Which type of flap creates the greatest change in pitching moment?
A. Plain
B. Split
C. Fowler - Answer C. Fowler
SU 1: Airplanes and Aerodynamics
An aircraft wing is designed to produce lift resulting from
A. negative air pressure below the wing's surface and positive air pressure above the wing's
surface
B. positive air pressure below the wing's surface and negative air pressure above the wing's
surface
C. a larger center of pressure above the wing's surface and a lower center of pressure below the
wing's surface - Answer B. positive air pressure below the wing's surface and negative air
pressure above the wing's surface
SU 1: Airplanes and Aerodynamics
During flight with zero angle of attack, the pressure along the upper surface of a wing would be
A. equal to atmospheric pressure
B. less than atmospheric pressure
C. greater than atmospheric pressure - Answer B. less than atmospheric pressure
,SU 1: Airplanes and Aerodynamics
Why does increasing speed also increase lift?
A. the increased velocity of the relative wind overcomes the increased drag
B. the increased impact of the relative wind on the airfoil's lower surface creates a greater
amount of air being deflected downward
C. the increased speed of the air passing over an airfoil's upper surface increases the pressure,
thus creating a greater pressure differential between the upper and lower surface - Answer
B. the increased impact of the relative wind on the airfoil's lower surface creates a greater
amount of air being deflected downward
SU 1: Airplanes and Aerodynamics
The resistance, or skin friction, due to the viscosity of the air as it passes along the surface of a
wing is called
A. form drag
B. profile drag
C. parasite drag - Answer B. profile drag
SU 1: Airplanes and Aerodynamics
As airspeed decreases in level flight, total drag of an aircraft becomes greater than the total drag
produced at the maximum lift/drag speed because of the
A. decrease in induced drag
B. increase in induced drag
C. increase in parasite drag - Answer B. increase in induced drag
, SU 1: Airplanes and Aerodynamics
Which statement is true regarding airplane flight at L/D_max?
A. any angle of attack other than that for L/D_max increases parasite drag
B. any angle of attack other than that for L/D_max increases the lift/drag ratio
C. any angle of attack other than that for L/D_max increases total drag for a given airplane's lift -
Answer C. any angle of attack other than that for L/D_max increases total drag for a given
airplane's lift
SU 1: Airplanes and Aerodynamics
Which statement describes the relationship of the forces acting on an aircraft in a constant-
power and constant-airspeed descent?
A. thrust is equal to drag; lift is equal to weight
B. thrust is equal to drag; weight is greater than lift
C. thrust is greater than drag; weight is greater than lift - Answer A. thrust is equal to drag;
lift is equal to weight
SU 1: Airplanes and Aerodynamics
At a constant velocity in airflow, a high aspect ratio wing will have (in comparison with a low
aspect ratio wing)
A. increased drag, especially at a low angle of attack
B. decreased drag, especially at a high angle of attack
C. increased drag, especially at a high angle of attack - Answer B. decreased drag, especially
at a high angle of attack
SU 1: Airplanes and Aerodynamics
