Memory

Question 1

Answer 1

Question 2

Answer 2

101325 Pa

Question 3

Answer 3

Question 4

Air density is _____ proportional with the pressure

(Density _____ as pressure _____)

Answer 4

directly

increases

increases

Question 5

Air density is _____ proportional with temperature

(Density _____ as temperature _____)

Answer 5

inversely

decreases

increases

Question 6

Air density is _____ proportional with humidity

(density ____ as humidity ____)

Answer 6

inversely

decreases

increases

Question 7

If air density drops, there will be a reduction in:-

1.

2.

3.

Answer 7

1. The lift produced by wings
2. The thrust produced by propellers / jet engines
3. The power or torque produced by piston engines.

Question 8

Answer 8

Question 9

What is the lift formula?

Answer 9

Question 10

What is Washout and Washin?

Answer 10

Washin (crease) is where the angle of incidence increases from wing root to wing tip,

Washout is the opposite, angle of incidence at wing tip is less than at wing root.

Result is wing stalls at root first, giving aileron control in the event of a stall.

Question 11

Answer 11

Question 12

Differentiate between normal turn, slipping turn and skidding turn

Answer 12

Normal turn => Horizontal lift = centrifugal force

Slip turn => Horizontal lift is greater than centrifugal force

Skidding turn => Horizontal force is less than centrifugal force

(To remember )

Slip (aircraft) skidding

side with word is greater force ( hori vs centrif)

Question 13

What is the Keel Effect?

Answer 13

Keel Effect
If an aircraft begins to sideslip, all of the keel surface above the centre of gravity will be presented to the relative airflow which will give a force to help in correcting the roll.