M8.2 The Terms

What is the sweep angle in aviation?

• The angle between the wingtip and the fuselage.

• The angle between the line of 25 percent chords and a line perpendicular to the root chord.

• The angle between the wing and the tail.

• The angle between the cockpit and the nose.

What is the relationship between speed and angle of attack in high-speed flight?

• High speed, high angle of attack

• High speed, low angle of attack

• Low speed, low angle of attack

• Speed does not affect angle of attack

What type of drag is associated with large wing tip vortices?

• Low induced drag

• High induced drag

• No drag

• Form drag

What is the relationship between form drag and friction drag?

• Low form drag results in low friction drag.

• High form drag results in high friction drag.

• Low form drag results in high friction drag.

• Form drag and friction drag are unrelated.

Where can fairings be found to reduce interference drag?

• Wing tips

• Engine pylons

• Landing gear

• Cockpit

What happens to parasite drag as speed increases?

• It decreases

• It remains constant

• It increases

• It fluctuates

What is the effect of winglets on wingtip vortices?

• They reduce wingtip vortices

• They have no effect

• They increase wingtip vortices

• They create new vortices

How does the aspect ratio of a wing affect its aerodynamic efficiency?

• Higher aspect ratio increases aerodynamic efficiency

• Lower aspect ratio increases aerodynamic efficiency

• Aspect ratio has no effect on aerodynamic efficiency

• Aspect ratio only affects structural strength

What is the primary purpose of ailerons on an aircraft?

• To control speed

• To control pitch

• To control roll

• To control yaw

What happens to lift when the angle of attack exceeds the critical angle?

• Lift remains constant

• Lift becomes zero

• Lift increases

• Lift decreases