AA1204 Design Features

Question 1

Describe the characteristics of induced drag on a high-aspect wing

Answer 1

very little induced drag, which means good lift production at slow speed

Question 2

What could you say about a low aspect ratio wing’s coefficient of lift vs. angle of attack curve?

Answer 2

It is much shallower than a high-aspect wing’s

Question 3

Describe the characteristics of induced drag on a low-aspect wing

Answer 3

Induced drag is high, but it doesn’t matter when you fly at high speeds

Question 4

Describe the aerodynamic advantages of a swept wing

Answer 4

Reduces parasite drag at near supersonic speed and improve certain kinds of flight stability

Question 5

What can you say about stall AOA for a swept wing vs. straight wing?

Answer 5

Stall AOA for swept wing will be higher due to spanwise flow

Question 6

Which coefficient of lift vs. AOA is shallower - high sweep or low sweep?

Answer 6

High sweep

Question 7

Describe the difference in stall characteristics in high vs. low performance aircraft

Answer 7

Low performance aircraft buffet right before they stall, high performance aircraft buffet over a wide range of AOA

Question 8

In which aircraft (high/low performance) does coefficient of lift drop off rapidly when stall AOA is exceeded?

Answer 8

Low performance

Question 9

Compared with a straight wing, a swept wing will stall at a ___ AOA

Answer 9

higher

Question 10

Compared with a straight wing, a swept wing will have ___ parasite drag

Answer 10

less

Question 11

In which aircraft (high/low performance) is coefficient of lift greatest?

Answer 11

Low

Question 12

Which aircraft (high/low performance) produces 0 lift at 0 AOA?

Answer 12

High