8.3 Theory Of Flight

Question 1

What is glide ratio?

Answer 1

The ratio of the distance forward to the distance downward

Question 2

With the same glide ratio, a heavier aircraft must be what than a smaller aircraft to touch down at same point?

Answer 2

Faster velocity

Question 3

When does centre of pressure move?

Answer 3

When angle of attack changes

Question 4

When does centre of gravity move?

Answer 4

When there is change in weight

Question 5

The values of specific range versus speed are affected by what three principal variables?

Answer 5

Aircraft gross weight
Altitude
The external aerodynamic configuration of the aircraft

Question 6

Lift increase of plain flap

Answer 6

50-55%

Question 7

Lift increase of split flap?

Answer 7

60-65%

Question 8

Lift increase for slotted flap?

Answer 8

65-70%

Question 9

Lift increase for fowler flap?

Answer 9

95%

Question 10

Benefits of installing winglets?

Answer 10

Reduced fuel consumption
Increased fuel range
Improved performance
Lower emissions

Question 11

Leading edge slot increases lift by what?

Answer 11

40%