1.3: Angle of Attack

Question 1

(Refer to figure 1)
The acute angle A is the angle of

A. incidence.
B. attack.
C. dihedral.

Answer 1

attack.

Question 2

The term “angle of attack” is defined as the angle between the

A. chord line of the wing and the relative wind.
B. airplane’s longitudinal axis and that of the air striking the airfoil.
C. airplane’s center line and the relative wind.

Answer 2

chord line of the wing and the relative wind.

Question 3

The angle between the chord line of an airfoil and the relative wind is known as the angle of

A. lift.
B. attack.
C. incidence.

Answer 3

attack

Question 4

The angle of attack at which an airplane wing stalls will

A. increase if the CG is moved forward.
B. change with an increase in gross weight.
C. remain the same regardless of gross weight.

Answer 4

remain the same regardless of gross weight.