Theory Of Flight

Question 1

What is the definition of glide ratio?

Answer 1

The glide ratio is the ratio of the forward distance traveled to the altitude lost during a glide.

Question 2

True or False: A higher glide ratio indicates a more efficient glide performance.

Answer 2

True

Question 3

What factors can affect the glide ratio of an aircraft?

Answer 3

Factors such as weight, airspeed, wind conditions, and aircraft design can affect the glide ratio.

Question 4

Fill in the blank: Glide ratio is calculated by dividing the forward distance traveled by the __________ lost.

Answer 4

altitude

Question 5

What is considered the ideally glide angle?

Answer 5

Typically 3-4 degrees AOA

Question 6

Potential energy equation?

Answer 6

PE = m x g x h
= mass x gravity x height

Question 7

Where on a wing is the centre of pressure typically?

Answer 7

25% of the chord from the leading edge (thickest point)

Question 8

What is the load factor when at zero degrees angle of bank?

Answer 8

1g

Question 9

What is the load factor when at 60 degrees angle of bank?

Answer 9

2g

Question 10

What is the load factor when at 45 degrees angle of bank?

Answer 10

1.41

Question 11

In which direction does the horizontal stab force act in level flight?

Answer 11

Downward force, to pitch nose up

Question 12

What is positive dynamic stability?

Answer 12

Tendency for the aircraft to dampen oscillations over time to 0 ( back to original state)

Question 13

What is neutral dynamic stability?

Answer 13

The tendency of the aircraft to maintain its displaced oscillation but won’t worsen

Question 14

What is negative dynamic stability?

Answer 14

Tendency of the aircraft to when displaced to worsen the oscillations over time

Question 15

What is the difference between static and dynamic stability?

Answer 15

Static stability is an aircraft’s tendency to immediately return to is equilibrium state, dynamic is its return to equilibrium over time, after some oscillation

Question 16

What would best describe the stability of an aircraft with a large distance between centre of gravity and centre of pressure?

Answer 16

Longitudinally stable, the great the distance the more stable in this plane

Question 17

In the turn which wing is producing more lift?

Answer 17

Down going wing, change to relative wind mean the down going produces the additional lift to return to neutral, longitudinally stable

Question 18

Deployment of flaps will result in an increase or decrease of stall angle?

Answer 18

Increases the stall angle

Question 19

The trailing vortex on a pointed wing (taper ratio 0) is where?
Root tip or equally along the wing span?

Answer 19

Equally along the wing span

Question 20

If a swept wing stalls at the tips first the aircraft will_____
Pitch nose up
Pitch nose down
Roll

Answer 20

Pitch nose up

Question 21

If a swept wing stalls at the tips first, the aircraft will ______
Pitch nose up
Pitch nose down
Roll

Answer 21

Pitch nose up, the centre of gravity always acts as the centre of rotation, so the horizontal stab downward force would still be acting producing a pitch up unbalanced by lift force

Question 22

How does ground effect influence an aircraft during takeoff?
Increase stall speed
Reduce induced drag
It has not effect

Answer 22

Reduces induced drag, less lift required

Question 23

What happens to stall angle with and increase in aircraft weight?
It decreases
It increases
It remains the same

Answer 23

It remains the same