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N1 Limit
2nd Mar 2019, 20:29
Hi fellow aviators
Please I'm stuck trying to compute the V speeds on the performance dispatch section as it's been years ago since I last did it.After I have interpolated the speed for the Flap setting I require I don't know how to do the V1,VR,V2 adjustments and the VMCG I'd appreciate if someone refresh me on those.

Denti
3rd Mar 2019, 00:12
Hi fellow aviators
Please I'm stuck trying to compute the V speeds on the performance dispatch section as it's been years ago since I last did it.After I have interpolated the speed for the Flap setting I require I don't know how to do the V1,VR,V2 adjustments and the VMCG I'd appreciate if someone refresh me on those.
Put all numbers into the performance software and take whatever combination of performance figures it spits out. Whoever does that stuff manually still? Haven't done any manual performance calculation in the last 15 years or so.

ImbracableCrunk
3rd Mar 2019, 05:48
I think there's way to many variations on how the data is displayed for anyone other than a co-worker to comment on. Without seeing what you're working with, we we can't be of much help.

Skyjob
3rd Mar 2019, 08:33
Use FPPM charted information, if you still have one...

N1 Limit
5th Mar 2019, 19:51
Hi Imbracablecrunck
Here are the data:
Gross weight:57000 KGS
Temperature: 13 degrees
Slope:0%
Dry Runway,Flaps5 24K
Airfield elevation:7650 Feet
My issues come from the V1,VR,V2 adjustments

I appreciate your help

N1 Limit
5th Mar 2019, 19:53
Hi Imbracablecrunck
Here are the data:
Gross weight:57000 KGS
Temperature: 13 degrees
Slope:0%
Dry Runway,Flaps5 24K
Airfield elevation:7650 Feet
My issues come from the V1,VR,V2 adjustments

I appreciate your help

Skyjob
5th Mar 2019, 20:30
Pressure Altitude: assumed 7650 as not provided

Takeoff Speeds - Dry Runway (24K Derate) - FLAPS 5
WEIGHT (1000 KG) : V1/V2/Vr
60: 131/132/142
55: 124/125/136
Interpolated figures for 57: 127/128/139
Pressure altitude corrections: +4/+4/-2 -> 131/132/137
Slope correction: none
Wind correction: assumed none as not provided
Clearway and Stopway corrections: assumed none as not provided

V1(mcg) for pressure altitude: 89

N1 Limit
5th Mar 2019, 21:22
Thanks Skyjob
It looks very clear to me now.I really appreciate