Aerodynamics

Question 1

Define induced drag

Answer 1

Rearward retarding force cause by the wings creating lift

Question 2

Define parasite drag

Answer 2

Drag caused by the fuselage and other protrusions disrupting the air

Question 3

Define relative wind

Answer 3

The airflow cause by moving the wing through the air

Question 4

Define angle of attack

Answer 4

The angle between the chord of the wing and the relative wind OR the angle between where the wing is pointed and where its actually going

Question 5

What is the relationship between angle of attack and total lift?

Answer 5

As AOA increases, total life increases

Question 6

Define the critical angle of attack

Answer 6

The point at which the wing will stall

Question 7

What is a wing tip vortex?

Answer 7

The result of air flowing from below the wing to the top of the wing over the wing edge. It increases as lift increases

Question 8

Where do stalls on a wing originate as critical angle of attack is reached?

Answer 8

On the wing root.

Question 9

Define the angle of incidence

Answer 9

The angle at which the wing is attached to the fuselage

Question 10

What causes (4) an aircraft to yaw to the left during slower speeds?

Answer 10

Spiraling slipstream from the propellor hitting the rudder, torque from the engine rotation, asymmetric propellor loading, and gyroscopic precession