Perf Flashcards
The EOL is derived from what three distances subtracting 45m
ASDA
TODA
STODA 1.9
V2 mustn’t be less than
1.1 VmCa or 1.2 vs
What does v2 overspeed achieve
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
What correction to add for slope on landing distance available
Specified in 4-2 if the runway slope exceeds 1% down, reduce LDA by 10% for each 0.5% in excess of 1%
What happens to asda and todr with a higher v1
ASDA increas
Todr decrease
What happens to asda and todr with a higher v1
ASDA increase
Todr decrease
Why is it good to use a balanced field length where possible
Maximise brw on a runway that has no stopway or clear way beyond the TORA. It is when ASDA =toda
What does a low v1 do
Results in short accelerate stop distance but a long 1 inop takeoff distance, useful when there is a clear way
What does having a high v1 (close to Vr) do
Results in long ASDA but short 1 inop take off distance. Useful when there’s a stopway
What do you interpolate to on average eprs for take off graph limitations
Nearest 1000ft PA and 5C
40 flap max structural landing weight is
64650kg
How long must you wait if quick turn around is not permitted
44mins
What are the considerations for reference field length
Casr 121 6.02 abc
Level, dry, still air, isa at sea level, mtow
Mzfw is related to what ,limitation
Wing structure
Minimum v1 speed is
Vmcg
You have an ldr of 1000m but the runway is wet.what is your new LDr
1150m
1000+15%
What wind components corrections are made to normal p charts
Not greater than 50% hwc and no less than 150% twc
On a 3 degree profile and you cross the threshold at 100ft.
How much longer will your ldr be
1000ft
ATC requires you to maintain a particular altitude so how would you preserve maximum range
Fly aT optimum design speed and that speed will reduces as weight decreases
Which is higher mrc or mlrc
Mlrc
Max range speed is
Vimd 1.32 best tas/drag
Correct rotation at the right Vr will ensure proper acceleration to
V2
What happens to stall speed in forward c of g
Increase
Clear way is 400m and stopway 100m
If the stopway became 400mt what happens to v1 and mbrw
They both increase
Changes in oat effect sfc at a particular weight speed and altitude is
Increase in oat results in increased sfc
Do changes in oat have significant effect on sgr
No
Max range tas for a turbojet aircraft is
Determined by angle of attack for best gs/drag
Max range tas for a turbojet aircraft is
Determined by angle of attack for best gs/drag
The angle of attack for max endurance in a turbojet is
Independent of wind and weight
In order to maintain profile for a given ias
You need more power in hedwind than nil or tail
The angle of attack required for minimum thrust in level flight
Doesn’t vary with changes in weight
Vr mustn’t be less than
V1 or 1.05 vmca
Average tas in a climb formula
Anm/eti x 60
What cg position results in lower vmca
Forward
727 cg datum is located
Just in front of main landing gear
What happens to tas with oat increase
TAS increases
If asked best sgr without given a cruise schedule
Use lrc first then check faster speeds to see if there’s a faster one if headwind is strong
Balanced field length occurs
When distance require Oei to 35ft is equal to asda
Minim v1 is
Vmcg plus recognition time
MLRC differs from MRC
MLRC is faster than MRC and involves a reduction in thrust as fuel is burnt and weight reduces
Characteristics of fwd cg
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
Approach attitudes with flaps
Leading
Trailing
Leading edge flaps are high attitude
Trailing flaps are low attitude
