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Slope = 0%
Flaps = 0°
Wind = 0
Close Obstacle
V2/Vs influence: Take-off optimization
1.23
149t
A project supported by AIRBUS and the CAAC
Date of the module
V2min
V2max
35 ft
V2/Vs influence : « Close obstacle »
V2/VSR 2nd segment gradient
A project supported by AIRBUS and the CAAC
Date of the module
1 - Take-off speeds
2 - Take-off distances and lengths available
3 - Take-off flight path
4 - Take-off data influence
5 - Maximum allowed take-off weight calculation
6 - Wet and contaminated runway
7 - Flexible take-off
Table of Contents
A project supported by AIRBUS and the CAAC
Date of the module
The lowest of :
Maximum take off design (structural) weight
Maximum take off weight due to performance
Runway limitation
Take off climb requirement limitation
Obstacle limitation
Tires limitation
Brakes limitation
MAXIMUM ALLOWED TAKE OFF WEIGHT (RTOW)
A project supported by AIRBUS and the CAAC
Date of the module
A 320/200
Temperature =
+20°C
Sea Level
RWY : 2300m
SWY : 100m
CWY : 0m
V2/Vs1g = 1,21
No rwy slope
No wind
S/F = 1+F
Runway limitation calculation
60
70
80
90
0,84 0,92 1
V1/VR
m
70,3 t
0,974
ASDA
TODA
TORA
A project supported by AIRBUS and the CAAC
Date of the module
A 320/200
Temperature =
+20°C
Sea Level
RWY : 2300m
SWY : 100m
CWY : 300m
V2/Vs1g = 1,21
No rwy slope
No wind
S/F = 1+F
Runway limitation calculation
V1/VR
m
60
70
80
90
0,84 0,92 1
ASDA
TODA
TORA
0,952
72 t
A project supported by AIRBUS and the CAAC
Date of the module
BR Vef
Segments 1 2 3 (acceleration)
V2
final
Gross TO flight path
1500 ft
Gear
retracted
3s after
Vlof
Gear
fully
retracted
Flaps
T.O conf. 10 mn max
after BR
flaps
retraction
one engine inoperative
Maxi
Cont.
All
eng. Maxi Take off thrust
Slats
retraction
Green dot
Take-off “climb requirements” limitation calculation
A project supported by AIRBUS and the CAAC
Date of the module
Twinengined
Threeengined
Fourengined
1st segment > 0% 0.3% 0.5%
2nd segment 2.4% 2.7% 3%
final 1.2% 1.5% 1.7%
Acceleration height 400ft
Take-off “climb requirements” limitation calculation
A project supported by AIRBUS and the CAAC
Date of the module
70
75
80
85
90
95
100
105
110
0.84 0.88 0.92 0.96 1
1 sgt
2 sgt
FTO
m(t)
V1/VR
A 320/200
Temperature = +20°C
Sea Level
RWY : 2300m
SWY : 100m
CWY : 0m
V2/Vs1g = 1,21
No rwy slope
No wind
S/F = 1+F
Take-off “climb requirements” limitation calculation
A project supported by AIRBUS and the CAAC
Date of the module
D
E/2
b/2
B/2
35ft
height
planned
flight path
Start of departure
sector = end of
TODA
Departure sector (obstacles limitations) - JAR OPS 1.495
b/2 = 60m +½ wing span 90 m
E/2 = b/2 + 0.125 D B/2
“Obstacle” limitation calculation
A project supported by AIRBUS and the CAAC
Date of the module
B/2 values
Track change 15° Track change >15°
Other
conditions
300m 600m 600m 900m
Navigation
with accuracy
Navigation
with accuracy
Other
conditions
A project supported by AIRBUS and the CAAC
Date of the module
CCAR121.189
Take the smaller(For turbo jet
aircraft):
1. E/2=90m+0.125D B/2
2. B/2 Value
300m 600m 600m 900m
VFR IFR VFR IFR
Track Change 15 Track Change > 15
A project supported by AIRBUS and the CAAC
Date of the module
FAR121.189
A project supported by AIRBUS and the CAAC
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