Ground Effect

Question 1

What does the ground effect do to the gradient of the downwash?

Answer 1

Makes it shallower.

Question 2

At what height could the ground effect happen?

Answer 2

One wing span high.

Question 3

At the height will the ground effect occur?

Answer 3

Half the wing span.

Question 4

What happens to the effective angle of attack during the ground effect?

Answer 4

It increases.

Question 5

When entering the ground effect is there a 50% increase or decrease in induced drag?

Answer 5

Decrease.

Question 6

What type of wing will experience the largest loss of lift due to the ground effect ( Low/high wing and Takeoff/landing)?

Answer 6

Low and T/0.

Question 7

In ground effect, an aeroplane’s effective angle of attack (1) _____ due to the (2) _____ downwash.

Answer 7

Increased reduced