BAvn Bachelor of Aviation Bachelor of Aviation Theory of Flight 2

Question 1

What is the primary cause of induced drag on a wing?

Accepted Answer

Wingtip vortices creating a downwash that tilts the lift vector rearward

Answer

Induced drag results from wingtip vortices that cause downwash, effectively tilting the lift vector aft and producing a drag component.

Question 2

An aircraft is in a 60-degree banked level turn. What is the load factor (G)?

Accepted Answer

2.0 G

Answer

In a level banked turn, load factor = 1/cos(bank angle); cos(60°) = 0.5, so load factor = 2.0 G.

Question 3

Which phenomenon occurs when a swept-wing aircraft approaches the stall and the wingtips stall before the wing root?

Accepted Answer

Pitch-up tendency

Answer

Tip stall before root stall causes a pitch-up tendency because the center of pressure moves forward as the tips lose lift.

Question 4

What is the effect of increasing aspect ratio on a wing's aerodynamic efficiency?

Accepted Answer

Decreases induced drag and improves lift-to-drag ratio

Answer

Higher aspect ratio wings have smaller wingtip vortices relative to span, reducing induced drag and improving the lift-to-drag ratio.

Question 5

In subsonic flight, where does the center of pressure typically move as angle of attack increases toward stall?

Accepted Answer

Moves forward then rapidly aft at stall

Answer

In subsonic flow, as AoA increases the center of pressure moves forward, but at stall the abrupt loss of lift causes it to shift rapidly aft.

BAvn Bachelor of Aviation Practice Test