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ATPL God Notes > Principles Of Flight > Flashcards

Principles Of Flight Flashcards

1
Q

What is the formula and unit for wing loading?

A

Aircraft weight / wing area

Unit = N/m^2

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2
Q

What is the formula for load factor?

A

Lift / weight

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3
Q

What is CAS?

A

IAS corrected for:
position error
instrument error

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4
Q

What is EAS?

A

CAS corrected for:

compressibility error

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5
Q

What is TAS?

A

EAS corrected for density error

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6
Q

What is the formula aspect ratio?

A

Span^2 / wing area

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7
Q

What is mean aerodynamic chord?

A

The chord of a rectangular wing with the same moment and lift

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8
Q

What is the chord line?

A

Straight line joining leading and trailing edges

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9
Q

What is the mean camber line?

A

A line equidistant between the upper and lower surfaces of a wing

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10
Q

Define angle of attack?

A

The angle between the RAF and the chord line

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11
Q

Define the angle of incidence

A

The angle between the longitudinal axis and the chord line

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12
Q

Define the pitch angle?

A

Angle between the longitudinal axis and the horizontal

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13
Q

What is the centre of pressure?

A

The point at which the force of lift acts through

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14
Q

Where is the aerodynamic centre?

A

Approx 25% chord line

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15
Q

List the types of drag

A

Form
Skin friction
Interference
Induced

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16
Q

What is the lift formula?

A

L = 0.5p(v^2)SCl

Where p = rho

17
Q

What are the primary and secondary effects of elevators?

A 
Primary = pitch
Secondary = none
18
Q

What are the primary and secondary effects of rudder?

A 
Primary = yaw
Secondary = roll (to the same side)
19
Q

What are the primary and secondary effects of ailerons?

A 
Primary = roll
Secondary = adverse yaw (caused by increased induced drag on high wing)
20
Q

Where is the speed for best endurance found for a prop?

A

Vmp

21
Q

Where is Vx found for a prop?

A

Approx Vmp

22
Q

What speed is preferable when wishing to clear an obstacle?

A

Vx

23
Q

What affect does HWC and TWC have on climb gradient?

A 
HWC = increases
TWC = decreases
24
Q

What factors increase stall speed?

A

Increased weight
Forward C of G
Higher load factor
No flaps

ATPL God Notes (5 decks)

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