Drag Flashcards
1
Q
What are the 3 types of drag effect on an aircraft?
A
- Form drag
- Skin Friction
- Vortex/Induced Drag
2
Q
What does induced drag comprise of?
A
- Zero Lift Drag
- Lift Dependant Drag
3
Q
What causes induced drag?
A
Wingtip vortices
4
Q
How can you reduce induced drag?
A
Increase the span (high aspect ratio)
5
Q
How does induced drag vary?
A
Proportionally with angle of attack and inversely with speed
6
Q
When is vortex drag effectively zero?
A
When a symmetrical aerofoil is at 0° AoA
