QUESTIONS AND VERIFIED SOLUTIONS
◉ (8231)-An airplane which has good longitudinal stability should
have a minimum tendency to?
a. roll
b. pitch
c. yaw. Answer: pitch
◉ (8232)-As the angle of attack of an airfoil increases, the center of
pressure will?
a. move toward the trailing edge
b. remain stationary because both lift and drag components increase
proportionally to increased angle of attack.
c. move toward the leading edge. Answer: move toward the leading
edge
◉ (8233)-The angle of incidence is that acute angle formed by?
,a. the angular difference between the setting of the main airfoil and
the auxiliary airfoil (horizontal stabilizer) in reference to the
longitudinal axis of the aircraft.
b. a line parallel to the wing chord and a line parallel to the
longitudinal axis of the aircraft
c. a line parallel to the wing from root to tip and a line parallel to the
lateral axis of the aircraft.. Answer: a line parallel to the wing chord
and a line parallel to the longitudinal axis of the aircraft
◉ (8234)-An airplane's center of lift is usually located aft of its
center of gravity?
a. so that the airplane will have a tail-heavy tendency
b. so that the airplane will have a nose-heavy tendency
c. to improve stability about the longitudinal axis. Answer: so that
the airplane will have a nose-heavy tendency
◉ (8235) An airplane is controlled directionally about its vertical
axis by the
, A) Rudder
B) Elevator(s)
C) Ailerons. Answer: rudder
◉ (8236)-The elevators of a conventional airplane are used to
provide rotation about the?
a. longitudinal axis
b. lateral axis
c. vertical axis. Answer: Lateral axis
◉ 8237 Washing-in the left wing of a monoplane, for purpose of
rigging correction after flight test, will have what effect on the lift
and drag of that wing
A. Both drag and lift will decrease due to decreased angle of attack
B. Both drag and lift will increase due to increased angle of attack
C. The drag will decrease due to the effect of the lift increase.
Answer: Both drag and lift will increase due to increased angle of
attack