PDA

View Full Version : Why such a low V1 Figure?


Slow Progress
2nd May 2007, 16:45
Afternoon,

In our airline we use the Airbus latop takeoff performance and the other day I was calculating figures usiing GLA RWY23.

The V Speeds that came out were V1 127, VR 146 and V2 149.

Can anyone explain why I have such a low V1 figure as I couldn't explain it to the operating Captain.

Thanks

Slow Progress

Racing Snake
2nd May 2007, 18:03
WET runway?

mcdhu
2nd May 2007, 20:31
What did the LPC say was limiting you?

mcdhu

Slow Progress
3rd May 2007, 13:21
The runway was dry and the limiting factor was for obstacles.

A320
TOW 73500KGS
WIND 110/04
QNH 1019
OAT 20
RWY 23 FULL LENGTH

Slow Progress

Johnny F@rt Pants
3rd May 2007, 20:46
Maybe you've got min V1 figures rather than balanced field or a mid range V1 setting.

javelin
5th May 2007, 10:54
Tailwind factoring in I think

FlightDetent
7th May 2007, 07:35
Airbus LPC v 2.7 - Takeoff Performance Module
(obstacle data provided by Condor)
A320 msn 3031 or so CFM -B4 engines

GLA RWY 23
w/v -2 (110/4)
OAT 20
QNH 1019
TOW 73500
CF: 2
A/C: Off
A-I: Off
RWY: DRY
CG: >25
derate: TOGA

FLEX 48, V1 141-141, V2 141, VR 145

limitation TOW-OBS, ASD Min V1 (and max as well) 2532 m.

:confused: :confused: :confused:

OPT CF: 3 F48, v1 138-138, v2 138, vr 142, TOW-OBS, ASD v1 2422m

FD (the un-real)