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ATPL > Perf > Flashcards

Perf Flashcards

1
Q

The EOL is derived from what three distances subtracting 45m

A

ASDA
TODA
STODA 1.9

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2
Q

V2 mustn’t be less than

A

1.1 VmCa or 1.2 vs

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3
Q

What does v2 overspeed achieve

A

On climb weight limited take offs you can use the extra remaining runway to get more speed resulting in increasing Vr and improving climb performance. The cost of this is increased torr and todr

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4
Q

What correction to add for slope on landing distance available

A

Specified in 4-2 if the runway slope exceeds 1% down, reduce LDA by 10% for each 0.5% in excess of 1%

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5
Q

What happens to asda and todr with a higher v1

A

ASDA increas
Todr decrease

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6
Q

What happens to asda and todr with a higher v1

A

ASDA increase
Todr decrease

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7
Q

Why is it good to use a balanced field length where possible

A

Maximise brw on a runway that has no stopway or clear way beyond the TORA. It is when ASDA =toda

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8
Q

What does a low v1 do

A

Results in short accelerate stop distance but a long 1 inop takeoff distance, useful when there is a clear way

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9
Q

What does having a high v1 (close to Vr) do

A

Results in long ASDA but short 1 inop take off distance. Useful when there’s a stopway

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10
Q

What do you interpolate to on average eprs for take off graph limitations

A

Nearest 1000ft PA and 5C

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11
Q

40 flap max structural landing weight is

A

64650kg

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12
Q

How long must you wait if quick turn around is not permitted

A

44mins

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13
Q

What are the considerations for reference field length

A

Casr 121 6.02 abc
Level, dry, still air, isa at sea level, mtow

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14
Q

Mzfw is related to what ,limitation

A

Wing structure

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15
Q

Minimum v1 speed is

A

Vmcg

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16
Q

You have an ldr of 1000m but the runway is wet.what is your new LDr

A

1150m
1000+15%

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17
Q

What wind components corrections are made to normal p charts

A

Not greater than 50% hwc and no less than 150% twc

18
Q

On a 3 degree profile and you cross the threshold at 100ft.
How much longer will your ldr be

A

1000ft

19
Q

ATC requires you to maintain a particular altitude so how would you preserve maximum range

A

Fly aT optimum design speed and that speed will reduces as weight decreases

20
Q

Which is higher mrc or mlrc

A

Mlrc

21
Q

Max range speed is

A

Vimd 1.32 best tas/drag

22
Q

Correct rotation at the right Vr will ensure proper acceleration to

A

V2

23
Q

What happens to stall speed in forward c of g

A

Increase

24
Q

Clear way is 400m and stopway 100m
If the stopway became 400mt what happens to v1 and mbrw

A

They both increase

25
Q

Changes in oat effect sfc at a particular weight speed and altitude is

A

Increase in oat results in increased sfc

26
Q

Do changes in oat have significant effect on sgr

A

No

27
Q

Max range tas for a turbojet aircraft is

A

Determined by angle of attack for best gs/drag

28
Q

Max range tas for a turbojet aircraft is

A

Determined by angle of attack for best gs/drag

29
Q

The angle of attack for max endurance in a turbojet is

A

Independent of wind and weight

30
Q

In order to maintain profile for a given ias

A

You need more power in hedwind than nil or tail

31
Q

The angle of attack required for minimum thrust in level flight

A

Doesn’t vary with changes in weight

32
Q

Vr mustn’t be less than

A

V1 or 1.05 vmca

33
Q

Average tas in a climb formula

A

Anm/eti x 60

34
Q

What cg position results in lower vmca

A

Forward

35
Q

727 cg datum is located

A

Just in front of main landing gear

36
Q

What happens to tas with oat increase

A

TAS increases

37
Q

If asked best sgr without given a cruise schedule

A

Use lrc first then check faster speeds to see if there’s a faster one if headwind is strong

38
Q

Balanced field length occurs

A

When distance require Oei to 35ft is equal to asda

39
Q

Minim v1 is

A

Vmcg plus recognition time

40
Q

MLRC differs from MRC

A

MLRC is faster than MRC and involves a reduction in thrust as fuel is burnt and weight reduces

41
Q

Characteristics of fwd cg

A

Bad
Increase stall speed due tail down force
Increased drag
Thrust required increase
Range reduced

Good
Reduced vmca due longer arm to rudder
Increased longitudinal stability

42
Q

Approach attitudes with flaps
Leading
Trailing

A

Leading edge flaps are high attitude
Trailing flaps are low attitude

ATPL (3 decks)

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