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Airbus Landing Speeds

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6th Nov 2008, 20:54 #1 (permalink)

TheCosmicFrogJoin Date: Apr 2008Location: Galway, IrelandAge: 21Posts: 46

Airbus Landing Speeds

A question for all the Airbus pilots out there. What is the landing

speed of an Airbus?

The reason I ask this is because I use the feelThere Airbus A320-

series add-on for MS Flight Simulator.

For a long time I was under the (presumably wrong) impression that

the landing speed in an Airbus was the "F-Speed", which I'm aware

stands for flap-extension speed for approach, but something I alsobelieved was the correct touchdown IAS.

When I used the speed for final approach with my feelThere

Airbuses, the aircraft tended to approach at a nose-down angle and

was often, at times, substantially above the Glide Slope, telling me

from experience that I was going too fast to maintain a steady

glide.

What is actually the correct landing approach speed in an Airbus

aircraft and how is it calculated?

Thanking you,

Aaron.


Doors to AutomaticJoin Date: Dec 1999Location: EGNXPosts: 798

Cosmic Frog

It depends on the type of Airbus and it's landing weight (the heavier

the faster). Other factors are the amount of flaps used (the more

flap the slower the speed) and the elevation of the airfield.

For an Airbus A320 it will typically be in the region of 130kt to140kt


TheCosmicFrog Thanks DtA.


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Join Date: Apr 2008Location: Galway, IrelandAge: 21Posts: 46

Anyone else have any insight?


tubby lintonJoin Date: Mar 2007Location: Lost under the sea

with HMS TurbulentPosts: 896

Typically anywhere between 120-140 should be ok depending onweight,weather or fly vls+5Kt


sharpclassicJoin Date: Oct 2008Location: londonPosts: 167

A321 landing at around 70 tonnes, V App of around 140 kts.


NorthbeachJoin Date: Aug 2008Location: North AmericaAge: 52Posts: 374

Landing speed

Aaron,

The correct landing speed for any transport category jet varies depending

on landing weight, flap selection and airport conditions. There isnt a

number we can give you that will always work. It is not like giving you a

correct phone number. The flap extension speed you mentioned is an

airspeed limitation so as not to put excessive stress loads on the flap attach

points and drive mechanisms. The faster the jet is travelling the more

mechanical stress is exerted on those components when the flaps are

extended into the airstream.

The landing gear will have similar limitation speeds associated with them;

extension, retraction and operation with them extended.

As others have mentioned, try 140 knots with maximum flap extension andzero surface wind on the airport. On the jet I fly I end up with about 55%

N1 (power setting on the engines) for a stable approach. You do not chop

the power on these things and glide in-you fly it onto the ground gradually

reducing the power during the last few seconds of flight.

Respectfully,

Last edited by Northbeach; 8th Nov 2008 at06:01.


PBYJoin Date: Jan 2008Location: Around the cornerPosts: 85

Landing speed of Airbus 320:

GW minus 30 = vls

example: GW = 58000: 58 - 30 = 28 from that: 128 is vls

no wind: vls + 5 = 133 is approach speed

if wind: 133 + 1/3 of headwind component = approach speed

corrected for headwind (ground speed mini) to keep minimum ground

speed

The GW calculation is my own rule of thumb, but if you check the

manuals it is working perfectly allright, it is just little bit

conservative at high weights


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TheCosmicFrogJoin Date: Apr 2008Location: Galway, IrelandAge: 21Posts: 46

Thank you Northbeach and PBY!


Sam-MANJoin Date: Aug 2007Location: Greater Manchester,UKPosts: 186

Hello Fog.

Not sure what that add on is like for FS but does it include a Flight

Mangement Computer?

Not famiilar with Airbus FMCs but on Boeings it has the VREF page

which displays the various landing speeds for each flap setting.

HTH

Sam

10th Nov 2008, 01:36 #10 (permalink)

ElNinoJoin Date: Jul 2001Location: the Milky WayPosts: 198

The absolute minimum speed on approach is Vls (lowest selectablespeed), which is the top of the amber strip on the speed scale. It is

the absolute minimum speed you can fly for any given configuartion.

It a multiple of the stall speed of the aircraft in the current

configuration, the multiple varies according to whether the flaps are

extended or not, and if they are, which setting exists.

When a landing flap configuration is selected (i.e. either full flap or

flap 3), the Vls is equal to 1.23 Vs (stall speed). In this case, Vls =

Vref.

The target fly speed on approach is the magenta arrow on the

speed scale, which represents Vapp. Vapp = Vls + (5 knots or 1/3

of the headwind component, whichever value is greater). If 1/3 of

the headwind component > 5 knots, you add the actual value up to

a maximum of 15 knots.

An A320 at 64 tonnes (MLW = 66t): Vref, flap full, is 134 knots and

Vref, flap 3, is 139 knots, so the normal approach speed is 139

knots and 143 knots respectively.F speed: Minimum speed at which the flaps may be retracted at

takeoff.

In approach, used as a target speed when the aircraft is in CONF 2

or CONF 3.

Represented by "F" on the PFD speed scale. Equal to about 1.18 VS

to 1.22 VS of CONF 1 + F.

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