Mr.BA
Topic Author
Posts: 3310
Joined: Sun Sep 24, 2000 12:26 pm

Flap Settings On Airbus.

Sun Feb 24, 2002 1:56 pm

Hi everyone,

I hope someone could help me on this. Skystar? I have studied enough on how a Boeing jet works and now it's turn for me to learn more about Airbus. Could anyone let me know the flap configurations on Airbuses and which configuration do they normally use for take-off? For example, the B747 has 'flaps 1, 5, 10, 20, 25, 30'.

I am interested too on the take-off length of the A340. Does the computer calculate how much thrust to use for take-off after the pilot enters the 'runway length available for take-0ff'? I have seen A340s on longhaul lifting off earlier than those going on a 2 hour flight but most of the time they use up most of the runway no matter how heavy they are and I like it... the way she climbs is gentle and beautiful.

Thanks everyone.

alvin
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RE: Flap Settings On Airbus.

Sun Feb 24, 2002 3:08 pm

As far as the A320 family goes, there are 4 positions numbered "1" thru "Full"...well, 5, if you count "0" ( fully faired ). They flaps/slats deploy proportionally with each selection very much like on Boeing products. -- Flap selection vs actual surface positions of L/E slats/ T/Eflaps as follows: "0" = All faired..."1" = 18/10..."2" = 22/15..."3" = 22/30..."Full" = 27/35. -- There will be variances due to certain airspeeds and configurations, but that's the basic deal.
 
Skystar
Posts: 1339
Joined: Thu Jan 13, 2000 3:58 pm

RE: Flap Settings On Airbus.

Sun Feb 24, 2002 11:39 pm

Hi Alvin,

On the Airbus FBW aircraft you have:

Up
Flap 1
Flap 2
Flap 3
Full

In effect, there are 6 flap settings, as Flap 1 has two potential outcomes. Flap 1 in the air will just give you slat (unless you are retracting on climbout for instance in certain models, eg. A340), whereas Flap 1 on the ground will give you Flap 1+F, which is Flap 1 with slat & flap.

Here's a few comparison between Flap Configs of the Airbus aircraft. To the best of my knowledge flap settings do not vary according to conditions & aircraft conditions (the computer does not adjust flap settings, Flap 3 on an A340 will always be 26° for instance).

A319:

Up 0°/0°
Flap 1 18°/0°
Flap 1+F 18°/10°
Flap 2 22°/15°
Flap 3 22°/20°
Full 27°/40°

A320:

Up 0°/0°
Flap 1 18°/0°
Flap 1+F 18°/10°
Flap 2 22°/15°
Flap 3 22°/20°
Full 27°/35°

A321:

Up 0°/0°
Flap 1 18°/0°
Flap 1+F 18°/10°
Flap 2 22°/14°
Flap 3 22°/21°
Full 27°/25°

A330:

Up 0°/0°
Flap 1 16°/0°
Flap 1+F 16°/8°
Flap 2 20°/14°
Flap 3 23°/22°
Full 23°/32°

A340:

Up 0°/0°
Flap 1 20°/0°
Flap 1+F 20°/17°
Flap 2 24°/22°
Flap 3 24°/26°
Full 24°/32°

There you go. Depending on the aircraft, you can also get aileron droop of 5° to 10° on application of flaps.

Cheers,

Justin
 
Mr.BA
Topic Author
Posts: 3310
Joined: Sun Sep 24, 2000 12:26 pm

RE: Flap Settings On Airbus.

Wed Feb 27, 2002 12:15 am

Thanks for the replies! It's been great help.
Boeing747 万岁!
 
tsentsan
Posts: 1921
Joined: Mon Jan 28, 2002 10:48 pm

RE: Flap Settings On Airbus.

Wed Feb 27, 2002 2:32 am

Justin -

U never cease to amaze me.
Perhaps Mr.Ba would like to pay you a visit when he's down in Mel soon? I should be down in Mel/Syd end March.

-Tsentsan
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pikachu
Posts: 149
Joined: Thu Feb 07, 2002 5:58 pm

RE: Flap Settings On Airbus.

Wed Feb 27, 2002 3:28 am

In regards to your thrust question. The pilots are still responsible for entering the correct data from a performance chart (or computer) to safely get the airplane off the ground. There are many more factors involved in a take-off than just runway length.

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