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CPL AERODYNAMICS > Turning > Flashcards

Turning Flashcards

1
Q

Centripetal force

A

-Force that acts towards the centre of turn

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2
Q

What does the radius of a turn depend on?

A
  • Speed of object

- Strength of centripetal force

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3
Q

Centripetal force formula

A

Centripetal Force= WV^2/ GR

W= Weight
V= Velocity
G=Acceleration of earths gravity
R= Radius of turn

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4
Q

Practical way to generate centripetal force?

A

Bank aircraft so they produce horizontal component

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5
Q

Does weight affect AOB?

A

No

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6
Q

To fly faster around the same radius more…. is required?

A

Bank

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7
Q

To fly a smaller radius at the same speed; more…. is required?

A

Bank

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8
Q

Flying faster with the same bank will result in

A

A larger radius

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9
Q

Flying at the same speed with more bank will result in

A

A smaller radius

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10
Q

In a turn what must increase to maintain height?

A

-IAS or AOA

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11
Q

In a turn; does the stall speed increase or decrease?

A

Increases

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12
Q

What is load factor?

A

Ratio of lift being produced to the weight of aircraft

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13
Q

In a 60 degree turn what is the load factor?

A

2

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14
Q

The stalling speed increase with the square root of….

A

Load Factor

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15
Q

What is a centrifugal reaction?

A

Wants to fling everything away from centre of turn

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16
Q

G loading is equal to…..

A

Load Factor

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17
Q

What is the Load factor, Square root of Load Factor and New stall speed for….
*Assume 60kt original stall speed
34 Degrees

A

Load Factor= 1.2
Square Root Load Factor= 1.1
New Stall speed=66kts

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18
Q

What is the Load factor, Square root of Load Factor and New stall speed for….
*Assume 60kt original stall speed
48 Degrees

A

Load Factor= 1.5
Square Root Load Factor= 1.2
New Stall speed=72kts

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19
Q

What is the Load factor, Square root of Load Factor and New stall speed for….
*Assume 60kt original stall speed
75 Degrees

A

Load Factor= 2.0
Square Root Load Factor= 1.4
New Stall speed=84kts

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20
Q

What is the Load factor, Square root of Load Factor and New stall speed for….
*Assume 60kt original stall speed
85 Degrees

A

Load Factor= 11.5
Square Root Load Factor= 3.4
New Stall speed=204kts

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21
Q

What two variables control Rate and Radius of turn?

A
  • AOB

- Speed

22
Q

If TAS increaSe and AOB stays constant; Radius of Turn will….

A

Increase

23
Q

What is the rate of turn?

A

Time taken to complete turn

24
Q

If TAS is constant and bank is increased; the Radius of turn will….

A

Decrease

25
Q

Angle of bank required for Rate 1 turn=

A

True Airspeed/10+7

26
Q

Will height effect turn performance?

A

No

27
Q

Does wind affect turn performance?

A

No

28
Q

On a windy day; as the aircraft turns from downwind to upwind the pilot can experience what illusion?

A

Skidding out of turn

29
Q

If the rate of yaw is too slow in a turn the aircraft will begin to….. into turn

A

Slip

30
Q

If the rate of yaw is too fast in a turn the aircraft will begin to….. out of turn

A

Skid

31
Q

In a descending turn most aircraft have the tendency to….

A

Overbank

32
Q

Control inputs for level turn

A
  • Aileron in direction of turn: AOB
  • Rudder: Skid ball centre
  • Elevator: Increase AOA and generate extra lift
33
Q

Control inputs for climbing turn to left

A
  • Opposite Aileron: Prevent over banking

- Very little left rudder

34
Q

Control inputs for a climbing turn to right

A
  • Right aileron

- Right rudder

35
Q

Control inputs during descending turn

A

-Aileron held neutral if nose altitude held

36
Q

Minimum radius of turn depends on….

A
  • Square of the speed

- Angle of Bank

37
Q

Smallest radius=

A
  • Smallest speed
  • Largest bank up to limit load factor
  • Flap
38
Q

Max Rate=

A

Minimum time

39
Q

Load Factor and Structural limitations

A
  • Bending Loads
  • Torsional Loads
  • Shearing Loads
  • Tensile Loads
  • Compression Loads
40
Q

Speeds

A
  • Vs
  • Va
  • Vno
  • Vne
  • Vb
  • Vle
  • Vfe
41
Q

Forces Acting in climb

A

Lift is less than weight

Thrust is more than drag

42
Q

Effect of wind on Rate and Angle

A

-Affects angle but not rate

43
Q

Effect of weight on Rate and Angle

A

-Increased weight reduces both

44
Q

Effect of Density on Rate and Angle

A

-Reduced density reduces both

45
Q

If speed is kept constant

An increase in bank causes

A
  • Decrease in radius

- Increase in rate

46
Q

If speed is kept constant

A decrease in bank causes

A
  • Increase in radius

- Decrease in rate

47
Q

If bank is kept constant

A decrease in speed causes

A
  • Increase in rate

- Decrease in radius

48
Q

If bank is kept constant

An increase in speed causes

A
  • Decrease in rate

- Increase in radius

49
Q

If frost forms on the wings and is not removed before flight what happens?

A

-Less margin between Vtoss and Stalling speed

50
Q

What reduces Angle of climb

A

-Decrease in IAS

51
Q

During approach sudden decrease in H/W
IAS….
ROD….

A

IAS Decrease

ROD Increase

CPL AERODYNAMICS (13 decks)

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