Turning & Stalling

Question 1

Centripetal force

Answer 1

When turning and keeping on curved effect, this is the force acting on the body forcing it towards the centre of the turn

Question 2

The horizontal component of lift provides

Answer 2

Centripetal force

Question 3

In a banked turn of 60°, the wings produce a lift force equal to
L = ?
Remember that we need to increase lift in a turn due to loss of lift

Answer 3

2W

Question 4

What happens to the GForce and load factor in a 60 degrees turn

Answer 4

G-Force is 2g, the load factor is 2

Question 5

What is the load factor calculation

Answer 5

Lift / weight
OR:
(Wing loading in a manoeuvre) / (wing loading in straight and level)

Question 6

The more bank degree,

Answer 6

The more load factor and g-force felt

Question 7

An increase of angle of attack will make the induced drag

Answer 7

Greater

Question 8

Since on a turn we lose height, we increase the angle of attack. What it means about airspeed

Answer 8

We should increase it

Question 9

When turning (and increasing the angle of attack to maintain height), what happens to stall speed?

Answer 9

Increases

Question 10

At 60° degrees bank angle the stall speed is increased by

Answer 10

41%

Question 11

“Slipping into the turn”

Answer 11

The increase of induced drag on the outer wing (since it’s generating more lift) causes the nose to yaw in the direction opposite of the turn. Need to apply rudder to maintain balance.

Question 12

Skidding turn

Answer 12

When the tail tends to skid onto the outside of the turn,

Question 13

To maintain a specific radius turn, the more speed

Answer 13

The more bank angle required

Question 14

At constant speed, the greater the bank angle,

Answer 14

the tighter the turn

Question 15

in a constant bank angle, more airspeed will make

Answer 15

the radius turn larger

Question 16

Rate-1 turn meaning

Answer 16

180° in 1 minute

Question 17

Formula to estimate bank angle for a rate-1 turn considering airspeed

Answer 17

1/10 * airspeed + 7°

Question 18

How does increased velocity affect static pressure

Answer 18

Static pressure decreases

Question 19

What happens to the separation point with higher angle of attacks

Answer 19

Comes forward

Question 20

pre-stall buffet (or control buffet)

Answer 20

The shaking of the airframe before reaching a stall

Question 21

After exceeding the critical angle, when happens to the center of pressure

Answer 21

Moves backwards, therefore lowering the nose

Question 22

How to recover from stall

Answer 22

Reduce angle of attack, and incase of low speed, full power

Question 23

Stalling depends directly on

Answer 23

Angle of attack and not airspeed

Question 24

If extra lift is needed (more weight) then the stalling speed will be

Answer 24

greater

Question 25

Another name for load factor or g-forces is

Answer 25

dynamic loading

Question 26

When load factor increases

Answer 26

Stalling speed increases

Question 27

If you feel g-forces (load factor increased) that means

Answer 27

stall speed increased

Question 28

In a 30° bank turn, stalling speed increases by

Answer 28

7%

Question 29

In a 45° bank turn, stalling speed increase by

Answer 29

19%

Question 30

In a 60° bank turn, stalling speed increase by

Answer 30

41%

Question 31

When lift foce from the wings increases,

Answer 31

load factor increases, therefore stalling speed

Question 32

Large wing relative to weight, will make the stall speed

Answer 32

decrease

Question 33

In a power-on stall, due to slipstream, the stalling speed

Answer 33

is less

Question 34

The slipstream is an airflow with kinetic energy flowing through the aircraft’s by the propoeller, hitting the inner parts of the wing and the complete tailplane. Making the wing at inner ok, and the outer wings to stall. What will happen

Answer 34

Rapid roll

Question 35

WIng Washout

Answer 35

A lower angle of incidence at the wing-tip than at wing-root. (This means the wing-root will reach stall before the wing-tip)

Question 36

Ice accretion two effect:

Answer 36

• Ice on the upper surface wing will break the streamline flow. Stalling speed will increase
• Ice will make the aircraft heavier. Stalling speed wil increase

Question 37

Where do ice build more rapidly on the wing

Answer 37

Stagnation point

Question 38

Extending flaps will

Answer 38

Decrease stall speed

Question 39

Autorotation

Answer 39

During stall, the dropping wing becomes furthered stalled and the airplane will roll, sideslip, and nose drop. If no action is taken, the rate of rotatio is increased and now its a spin

Question 40

1c 2

Question 41

Load factor calculation formula

Answer 41

1/cos(bank angle)

Question 42

Stall speed by load factor formula

Answer 42

Vs*root(load factor)