Airfoil Parts Quiz

What does the maximum lift coefficient (CL,max) represent in the context of an airfoil?

• The maximum value of lift coefficient that occurs just prior to the stall.

• The lift coefficient at zero angle of attack.

• The minimum lift coefficient during flight.

• The lift coefficient at maximum speed.

How does a higher CL,max affect the stall speed Vstall of an aircraft?

• It increases the stall speed.

• It decreases the stall speed.

• It has no effect on the stall speed.

• It doubles the stall speed.

What is the relationship between high lift devices and takeoff/landing distance?

• High lift devices increase CL,max, which increases takeoff/landing distance.

• High lift devices decrease CL,max, which increases takeoff/landing distance.

• High lift devices increase CL,max, which decreases takeoff/landing distance.

• High lift devices have no effect on takeoff/landing distance.

What is the formula for stall speed (Vstall) as shown in the diagram?

What is the angle of attack (AOA)?

• The angle between the relative wind and the chord line.

• The angle between the camber line and the chord line.

• The angle between the relative wind and the camber line.

• The angle between the chord line and the ground.

What are the primary flight control surfaces located on the tail of an aircraft?

• Rudders and elevators

• Flaps and slats

• Spoilers and ailerons

• Droop nose and slats

Which control surface is used to increase lift during takeoff and landing by extending from the leading edge of the wing?

• Flaps

• Slats

• Spoilers

• Ailerons

Which part of the aircraft is labeled as "Trimable Horizontal Stabilizer" in the diagram?

• The vertical tail fin

• The horizontal surface on the tail

• The leading edge of the wing

• The trailing edge of the wing

What is the purpose of the spoilers on an aircraft?

• To increase lift during takeoff

• To reduce lift and increase drag

• To control the yaw of the aircraft

• To stabilize the aircraft during flight

What is the definition of stall speed (V_stall)?

• The maximum speed at which an airplane can fly in straight level flight.

• The slowest speed at which an airplane can fly in straight level flight.

• The speed at which an airplane can take off.

• The speed at which an airplane can land.