Stability And Effect Of Control

Question 1

What does a stable aircraft tend to do?

Answer 1

Tends to return to its original condition after being disturbed

Question 2

What will a neutrally stable aircraft do?

Answer 2

Will assume a new position

Question 3

What will an unstable aircraft do?

Answer 3

Will continue to diverge from its original position

Question 4

Movement along the longitudinal axis is called?

Answer 4

Roll

Question 5

Movement along the lateral axis is called?

Answer 5

Pitch

Question 6

Movement along the vertical axis is called?

Answer 6

Yaw

Question 7

Stability in roll is called

Answer 7

Lateral stability

Question 8

Stability in pitch is called

Answer 8

Longitudinal stability

Question 9

Stability in yaw is called

Answer 9

Directional stability

Question 10

Where do the axis operate through?

Answer 10

Centre of Gravity

Question 11

Directional stability is controlled by the ?

Answer 11

Vertical stabiliser (Rudder/tail fin)

Question 12

What controls longitudinal stability?

Answer 12

Horizontal stabiliser (tail plane/elevator)

Question 13

Swept wings can help to increase lateral stability. True or False?

Answer 13

True

Question 14

Do Dihedral wings also increase lateral stability?

Answer 14

Yes

Question 15

Dihedral wings angle up slightly and anhedral wings point down.

Answer 15

T

Question 16

Lateral stability is controlled by the?

Answer 16

Wing design and aileron

Question 17

Andiheral reduces excessive lateral stability. True or False

Answer 17

True

Question 18

Where are trim tabs located?

Answer 18

Trailing edge of rudder, elevator and ailerons

Question 19

What are trim tabs?

Answer 19

Small moveable control surfaces.

Question 20

What do trim tabs do?

Answer 20

Assist (aerodynamically) the movement of the main control surface. By means of small control wheels/trim buttons