3D Flow Flashcards
1
Q
Why do we want an elliptical lift distribution?
A
Creates favourable handling characteristics.
2
Q
What two things increase wingtip vortices?
A
Chord length and aircraft speed
3
Q
Why does tapering reduce wingtip vortices?
A
Reduces the amount of surface area the air has to come into contact with.
4
Q
True or false, wing tip vortices are stronger at higher speeds.
A
False.
5
Q
Why are trailing edge vortices stronger at the tip?
A
Greater pressure gradient.
6
Q
What occurs at CLMAX?
A
Stall.
7
Q
In 3D flow, the lift acts perpendicular to what airflow?
A
Effective airflow.
8
Q
What angle of attack determines the amount of induced drag?
A
Induced.
9
Q
What angle of attack determines lift?
A
Effective.
