Jeppesen Private Pilot Handbook,
Chapter 3, Section A Questions
Select the true statement(s) regarding the four forces of flight.
a. During accelerated flight, thrust and drag are equal.
b. The four forces are in equilibrium during uncelebrated flight.
c. In straight-and-level unaccelerated flight, all four forces are equal in magnitude. -
answerB
Refer to the following illustration and identify the aerodynamic terms associated with the
airfoil. - answerA. Upwash
B. Leading edge
C. Trailing edge
D. Downwash
E. Flight path
F. Relative wind
G. Camber
H. Chord line
I. Angle of attack
Describe how Newton's laws of motion and Bernoulli's principle explain the generation
of lift by an airfoil. - answerAccording to Bernoulli's principle, the increase in speed of air
on the top of an airfoil produces a drop in pressure and this lowered pressure is a
component of total lift. In addition, a downward-backward flow of air is generated from
the top surface of the wing. Newton's third law of motion explains how the action of
downwash and the airstream striking the lower surface of the wing results in a reaction
of positive lift.
True/False. As airspeed increases, the angle of attack at which an airfoil stalls also
increases. - answerFalse
Determine the aspect ratio of the following planforms. - answerA. Aspect Ratio = 7
B. Aspect Ratio = 7
C. Aspect Ratio = 3.4
Identify three methods you can use to control lift during flight. - answerYou can control
lift by changing airspeed, changing angle of attack, or by employing high-lift devices
such as trailing edge flaps.
Will the wing's angle of attack increase or decrease when trailing edge flaps are
lowered? - answerIncrease
Chapter 3, Section A Questions
Select the true statement(s) regarding the four forces of flight.
a. During accelerated flight, thrust and drag are equal.
b. The four forces are in equilibrium during uncelebrated flight.
c. In straight-and-level unaccelerated flight, all four forces are equal in magnitude. -
answerB
Refer to the following illustration and identify the aerodynamic terms associated with the
airfoil. - answerA. Upwash
B. Leading edge
C. Trailing edge
D. Downwash
E. Flight path
F. Relative wind
G. Camber
H. Chord line
I. Angle of attack
Describe how Newton's laws of motion and Bernoulli's principle explain the generation
of lift by an airfoil. - answerAccording to Bernoulli's principle, the increase in speed of air
on the top of an airfoil produces a drop in pressure and this lowered pressure is a
component of total lift. In addition, a downward-backward flow of air is generated from
the top surface of the wing. Newton's third law of motion explains how the action of
downwash and the airstream striking the lower surface of the wing results in a reaction
of positive lift.
True/False. As airspeed increases, the angle of attack at which an airfoil stalls also
increases. - answerFalse
Determine the aspect ratio of the following planforms. - answerA. Aspect Ratio = 7
B. Aspect Ratio = 7
C. Aspect Ratio = 3.4
Identify three methods you can use to control lift during flight. - answerYou can control
lift by changing airspeed, changing angle of attack, or by employing high-lift devices
such as trailing edge flaps.
Will the wing's angle of attack increase or decrease when trailing edge flaps are
lowered? - answerIncrease
