AVIA 305 STUDY GUIDE EXAM 2 QUESTIONS
AND ANSWERS WITH VERIFIED SOLUTIONS
100% CORRECT
A low-tailed airplane with static ports beneath the wing leaves
ground effect after takeoff. It will have:
a. increased drag, nose-up pitch, lowered IAS
b. increased drag, nose-up pitch, higher IAS
c. decreased drag, nose-down pitch, lowered IAS
d. decreased drag, nose-up pitch, higher IAS - correct
answer- increased drag, nose-up pitch, higher IAS
Adverse presser gradient on an airfoil is found:
a. from the point of maximum thickness to the trailing edge
b. near the stagnation point at the leading edge
c. from the point of minimum pressure to the trailing edge
d. Both (a) and (c) - correct answer- from the point of
minimum pressure to the trailing edge
Air in the boundary layer:
a. changes from laminar to turbulent at low Reynolds numbers
b. separates from the wing when its velocity is maximum
, c. reverses flow direction when stall occurs
d. none of the above - correct answer- reverses flow
direction when stall occurs
Air in the boundary layer:
a. has zero velocity at the wing surface
b. is turbulent near the leading edge
c. is more apt to stall if it is turbulent
d. none of the above - correct answer- has zero velocity
at the wing surface
Airflow separation can be delayed by:
a. making the wing surface rough
b. using vortex generators
c. directing high-pressure air to the top of the wing or flap
through slots
d. all of the above - correct answer- All of the above
An airplane flying at coefficient-of-lift(max) will have:
a. more parasite drag than induced drag
b. more induced drag than parasite drag
AND ANSWERS WITH VERIFIED SOLUTIONS
100% CORRECT
A low-tailed airplane with static ports beneath the wing leaves
ground effect after takeoff. It will have:
a. increased drag, nose-up pitch, lowered IAS
b. increased drag, nose-up pitch, higher IAS
c. decreased drag, nose-down pitch, lowered IAS
d. decreased drag, nose-up pitch, higher IAS - correct
answer- increased drag, nose-up pitch, higher IAS
Adverse presser gradient on an airfoil is found:
a. from the point of maximum thickness to the trailing edge
b. near the stagnation point at the leading edge
c. from the point of minimum pressure to the trailing edge
d. Both (a) and (c) - correct answer- from the point of
minimum pressure to the trailing edge
Air in the boundary layer:
a. changes from laminar to turbulent at low Reynolds numbers
b. separates from the wing when its velocity is maximum
, c. reverses flow direction when stall occurs
d. none of the above - correct answer- reverses flow
direction when stall occurs
Air in the boundary layer:
a. has zero velocity at the wing surface
b. is turbulent near the leading edge
c. is more apt to stall if it is turbulent
d. none of the above - correct answer- has zero velocity
at the wing surface
Airflow separation can be delayed by:
a. making the wing surface rough
b. using vortex generators
c. directing high-pressure air to the top of the wing or flap
through slots
d. all of the above - correct answer- All of the above
An airplane flying at coefficient-of-lift(max) will have:
a. more parasite drag than induced drag
b. more induced drag than parasite drag
