ATF QUESTIONS AND VERIFED
CORRECT ANSWERS GRADED A+
[LATEST] 100% GUARANTEED PASS
Angle of Incidence - CORRECT ANSWER-Fixed angle between the wing chord and the
longitudinal axis of the aircraft.
Drag - CORRECT ANSWER-Force which opposes the forward motion of the aircraft. Induced drag
and parasite drag.
Induced Drag - CORRECT ANSWER-By-product of list. As the pressure differential increases, the
stronger the vortex generated. At the strength of the vortex increases, more induced drag is
produced.
Parasite Drag - CORRECT ANSWER-Made up of all the other drag. Interference drag, profile drag,
form drag, and skin friction.
Pressure Drag - CORRECT ANSWER-Results from the pressure differential between the fire and
aft sides of an A/C (produces a wake).
Interference Drag - CORRECT ANSWER-Pressure drag created by the intersection between the
two parts of an aircraft (wing strut).
Form/Profile Drag - CORRECT ANSWER-Pressure drag created by an object that is introduced to
a fluid flow i.e. the shape (ailerons).
Viscosity - CORRECT ANSWER-The stickiness of a fluid (air molecules).
, Skin Friction - CORRECT ANSWER-The drag created by the tendency of a fluid to stick or cling to
a surface of an object in fluid flow (frost).
Boundary Layer - CORRECT ANSWER-The area between the surface of the wing where the
velocity of the air is zero, up to a point where the velocity of the air reaches that of the free
airstream (laminar transition and turbulent air).
Spanwise Flow - CORRECT ANSWER-Air flows from high pressure to low pressure, this creates a
spiral flow of air at the wingtips. Wingtip vortices.
Theust - CORRECT ANSWER-Force generated by the engine(s) to oppose drag. What propels the
aircraft forward.
Weight - CORRECT ANSWER-Force acting downward on the mass of the aircraft due to gravity.
Directly opposes lift. Acts through CG
Equilibrium - CORRECT ANSWER-State if motion, not a state of rest. When the four forces are
equal and opposite, they are said to be in a state of equilibrium. Never in equilibrium during a
turn or acceleration. Weight is placed ahead of lift. Drag above thrust.
Constant Altitude Turns - CORRECT ANSWER-The turn is the only maneuver in which lift must be
greater than weight, and it's the only maneuver in which "G" forces exist in a steady state
condition, not equilibrium.
Centripetal Force - CORRECT ANSWER-The aircraft always accelerates to the inside of the turn.
Load Factor - CORRECT ANSWER-Ratio of actual load acting on the wings to the gross weight of
the aircraft. In level flight, live load = dead load or lift of the wings is equal to the weight of the
aircraft.
CORRECT ANSWERS GRADED A+
[LATEST] 100% GUARANTEED PASS
Angle of Incidence - CORRECT ANSWER-Fixed angle between the wing chord and the
longitudinal axis of the aircraft.
Drag - CORRECT ANSWER-Force which opposes the forward motion of the aircraft. Induced drag
and parasite drag.
Induced Drag - CORRECT ANSWER-By-product of list. As the pressure differential increases, the
stronger the vortex generated. At the strength of the vortex increases, more induced drag is
produced.
Parasite Drag - CORRECT ANSWER-Made up of all the other drag. Interference drag, profile drag,
form drag, and skin friction.
Pressure Drag - CORRECT ANSWER-Results from the pressure differential between the fire and
aft sides of an A/C (produces a wake).
Interference Drag - CORRECT ANSWER-Pressure drag created by the intersection between the
two parts of an aircraft (wing strut).
Form/Profile Drag - CORRECT ANSWER-Pressure drag created by an object that is introduced to
a fluid flow i.e. the shape (ailerons).
Viscosity - CORRECT ANSWER-The stickiness of a fluid (air molecules).
, Skin Friction - CORRECT ANSWER-The drag created by the tendency of a fluid to stick or cling to
a surface of an object in fluid flow (frost).
Boundary Layer - CORRECT ANSWER-The area between the surface of the wing where the
velocity of the air is zero, up to a point where the velocity of the air reaches that of the free
airstream (laminar transition and turbulent air).
Spanwise Flow - CORRECT ANSWER-Air flows from high pressure to low pressure, this creates a
spiral flow of air at the wingtips. Wingtip vortices.
Theust - CORRECT ANSWER-Force generated by the engine(s) to oppose drag. What propels the
aircraft forward.
Weight - CORRECT ANSWER-Force acting downward on the mass of the aircraft due to gravity.
Directly opposes lift. Acts through CG
Equilibrium - CORRECT ANSWER-State if motion, not a state of rest. When the four forces are
equal and opposite, they are said to be in a state of equilibrium. Never in equilibrium during a
turn or acceleration. Weight is placed ahead of lift. Drag above thrust.
Constant Altitude Turns - CORRECT ANSWER-The turn is the only maneuver in which lift must be
greater than weight, and it's the only maneuver in which "G" forces exist in a steady state
condition, not equilibrium.
Centripetal Force - CORRECT ANSWER-The aircraft always accelerates to the inside of the turn.
Load Factor - CORRECT ANSWER-Ratio of actual load acting on the wings to the gross weight of
the aircraft. In level flight, live load = dead load or lift of the wings is equal to the weight of the
aircraft.
