GLIDER INSTRUCTOR WRITTEN EXAM Questions with Correct
Solutions
Question:
1. Why does increasing speed also increase lift?
Answer:
The increased impact of the relatve wind on an airfoils lower surface creates a greater
amount of air being deflected downward.
Question:
2. Adverse yaw during a turn entry is caused by
Answer:
decreased induced drag on the lowered wing and increased induced drag on the raised wing
Question:
3. When rolling out of a steep-banked turn, what causes the lowered aileron to create more
drag than when rolling into a turn?
Answer:
The wings angle of attack is greater as the rollout is started.
Question:
4. Which statement is true concerning the aerodynamic conditions which occur during a spin?
Answer:
After a full stall, the wing that dips continues in a stalled condition while the rising wing
regains and continues to produce some lift, causing the rotation.
Question:
5. Lift produced by an airfoil is the net force developed perpendicular to the
Answer:
relative wind
Question:
6. The angle between the chord line of an airfoil and the relative wind is known as the angle
of
Answer:
attack
Question:
7. Which statement relates to Bernoulli's principal?
, Answer:
Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the
top surface.
Question:
8. The portion of the aircraft's total drag created by the production of lift is called
Answer:
Induced drag and is greatly affected by changes in airspeed.
Question:
9. The resistance, or skin friction, due to the viscosity of the air as it passes along the surface
of a wing is called
Answer:
Profile drag.
Question:
10. Changes in the center of pressure of a wing affect the aircraft's
Answer:
aerodynamic balance and controllability
Question:
11. The angle of attack of a wing directly controls the
Answer:
distribution of pressures acting on the wing.
Question:
12. Which statement is true relating to the factors which produce stalls
Answer:
The stalling angle of attack is independent of the speed of airflow over the wings.
Question:
13. If severe turbulence is encountered, the airplane's airspeed should be reduced to
Answer:
Maneuvering speed
Question:
14. The most desirable type of stability for an aircraft to have is
Answer:
Positive dynamic stability
Solutions
Question:
1. Why does increasing speed also increase lift?
Answer:
The increased impact of the relatve wind on an airfoils lower surface creates a greater
amount of air being deflected downward.
Question:
2. Adverse yaw during a turn entry is caused by
Answer:
decreased induced drag on the lowered wing and increased induced drag on the raised wing
Question:
3. When rolling out of a steep-banked turn, what causes the lowered aileron to create more
drag than when rolling into a turn?
Answer:
The wings angle of attack is greater as the rollout is started.
Question:
4. Which statement is true concerning the aerodynamic conditions which occur during a spin?
Answer:
After a full stall, the wing that dips continues in a stalled condition while the rising wing
regains and continues to produce some lift, causing the rotation.
Question:
5. Lift produced by an airfoil is the net force developed perpendicular to the
Answer:
relative wind
Question:
6. The angle between the chord line of an airfoil and the relative wind is known as the angle
of
Answer:
attack
Question:
7. Which statement relates to Bernoulli's principal?
, Answer:
Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the
top surface.
Question:
8. The portion of the aircraft's total drag created by the production of lift is called
Answer:
Induced drag and is greatly affected by changes in airspeed.
Question:
9. The resistance, or skin friction, due to the viscosity of the air as it passes along the surface
of a wing is called
Answer:
Profile drag.
Question:
10. Changes in the center of pressure of a wing affect the aircraft's
Answer:
aerodynamic balance and controllability
Question:
11. The angle of attack of a wing directly controls the
Answer:
distribution of pressures acting on the wing.
Question:
12. Which statement is true relating to the factors which produce stalls
Answer:
The stalling angle of attack is independent of the speed of airflow over the wings.
Question:
13. If severe turbulence is encountered, the airplane's airspeed should be reduced to
Answer:
Maneuvering speed
Question:
14. The most desirable type of stability for an aircraft to have is
Answer:
Positive dynamic stability
