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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 also believed 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?
The correct landing speed for any transport category jet varies depending on landing weight, flap selection and airport conditions. There isn’t 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 and zero 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.
The absolute minimum speed on approach is Vls (lowest selectable speed), 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.