Whole Aircraft Drag Flashcards
1
Q
What is Profile Drag?
A
It is Friction Drag + Form Drag.
2
Q
What is Total Drag?
A
It is Induced Drag + Parasite Drag.
3
Q
If weight increases, Induced drag ________
A
- increases - induced drag is proportionate to weight.
4
Q
What does parasite drag comprise of?
A
- Form Drag
- Friction Drag
- Interference Drag
5
Q
What is the formula for Drag?
A
1/2•rho•V2•S•Cdi
6
Q
What does induced drag increase with?
A
1) Weight
2) Manoeuvres
7
Q
How can tip vortices be reduced?
A
1) Increasing the aspect ratio.
2) Adding winglets to form a barrier.
3) Twisting of the wing (Geometric Twist).
8
Q
If airspeed increases, parasite drag ___________
A
- Increases - parasite drag is proportionate to speed.
9
Q
If airspeed increases, Induced drag ___________
A
- Decreases - Induced drag is inversely proportionate to speed.
