Question 1

What axis goes wingtip to wingtip, and what is the movement around it called?

Accepted Answer

Lateral axis; Pitching

Answer

Vertical axis; Yawing

Answer

Longitudinal axis; Rolling

Question 2

What axis goes from nose to tail, and what is the movement around it called?

Accepted Answer

Longitudinal axis; Rolling

Answer

Vertical axis; Yawing

Answer

Lateral axis; Pitching

Question 3

What axis goes vertically through the fuselage, and what is the movement around it called?

Accepted Answer

Vertical axis; Yawing

Answer

Lateral axis; Pitching

Answer

Longitudinal axis; Rolling

Question 4

What type of yaw occurs during a normal banked turn?

Accepted Answer

Desirable yaw

Answer

Undesirable yaw

Answer

Adverse yaw

Question 5

What type of yaw happens when the longitudinal axis is not aligned with the relative airflow?

Accepted Answer

Undesirable yaw

Answer

Desirable yaw

Answer

Coordinated yaw

Question 6

What causes slipstream yaw?

Accepted Answer

Air rotated by the propeller hitting the vertical fin

Answer

Uneven thrust from the propeller blades

Answer

Turbulence in rough air

Question 7

When does asymmetric thrust occur?

Accepted Answer

During climb or takeoff

Answer

During a banked turn

Answer

During turbulence

Question 8

What is torque, and how does it affect yaw?

Accepted Answer

The twisting effect of the propeller causes yaw in the opposite direction.

Answer

Torque has no effect on yaw.

Answer

The twisting effect of the propeller causes yaw in the same direction.

Question 9

What principle explains gyroscopic effect?

Accepted Answer

Forces act 90 degrees in the direction of rotation.

Answer

Forces act directly where applied.

Answer

Forces act opposite to the direction of rotation.

Question 10

What does aileron drag cause during a turn?

Accepted Answer

Yaw opposite to the direction of the turn

Answer

Yaw in the direction of the turn

Answer

No yaw at all

Question 11

How does turbulence affect yaw?

Accepted Answer

It induces yaw in either direction.

Answer

It always causes yaw to the left.

Answer

It has no effect on yaw.

Question 12

What is stability in an aircraft?

Accepted Answer

The tendency to stay in its original attitude, airspeed, and altitude after being displaced.

Answer

The tendency to move away from its original attitude, airspeed, and altitude.

Answer

The tendency to remain stationary on the ground.

Question 13

What is longitudinal stability?

Accepted Answer

Stability around the lateral axis

Answer

Stability around the longitudinal axis

Answer

Stability around the vertical axis

Question 14

What is lateral stability?

Accepted Answer

Stability around the longitudinal axis

Answer

Stability around the lateral axis

Answer

Stability around the vertical axis

Question 15

What is yaw stability?

Accepted Answer

Stability around the vertical axis

Answer

Stability around the longitudinal axis

Answer

Stability around the lateral axis

Question 16

What is dihedral, and what does it improve?

Accepted Answer

Wing slopes upward; improves roll stability

Answer

Wing slopes upward; reduces roll stability

Answer

Wing slopes downward; improves maneuverability

Question 17

What is anhedral, and what does it improve?

Accepted Answer

Wing slopes downward; improves maneuverability

Answer

Wing slopes downward; reduces maneuverability

Answer

Wing slopes upward; improves roll stability

Question 18

What is washout, and why is it used?

Accepted Answer

Wingtip has a lower angle of incidence; causes the root to stall first

Answer

Wingtip has a higher angle of incidence; improves aerobatic performance

Answer

Wingtip has a lower angle of incidence; causes the tip to stall first

Question 19

What is wash-in, and why is it used in aerobatic airplanes?

Accepted Answer

Wingtip has a higher angle of incidence; causes the tip to stall first

Answer

Wingtip has a lower angle of incidence; causes the root to stall first

Answer

Wingtip has a higher angle of incidence; causes the root to stall first

Question 20

What does the ball on the turn coordinator indicate?

Accepted Answer

Undesirable yaw

Answer

Desirable yaw

Answer

Coordinated yaw

Question 21

How do you correct yaw using the turn coordinator?

Accepted Answer

Step on the ball; use rudder in the same direction as the ball's position.

Answer

Step on the ball; use rudder opposite to the ball's position.

Answer

Ignore the ball; yaw corrects itself.

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