Flaps have to be down when you land so your speed can drop to a safety margin within the flight envelope.

 

If your flaps fail you cant deploy them and you can't reduce your speed or the autothrust will kick in.

 

So how would you lower your speed to land in an emergency where the flaps fail?

I dont fly the 'bus, but I belive you need to turn off the computer controling the flight envelope protection. I belive its on the top left side on the overhead panel.

Why would you want to turn off flight envelope protection? It will help you not to stall an aircraft.

 

There would be no way to reduce speed enough for safe landing anyway. 

You don't need flaps to land a plane.  You do need flaps to land at the slowest possible airspeed.  If your flaps have failed, and that would take a pretty catastrophic loss in a 'Bus, it means you'll be landing at a faster speed and you'll need a nice long runway.    I don't fly the Airbus, but I would think the MCDU would accept 0 flaps for your landing performance calculations.  Simple answer for reducing speed, turn off the auto-throttle.  Flight envelope protection shouldn't have any chance to kick in if you fly the plane properly, and the only help you need not to stall is to maintain an airspeed above V_s. 
 

Cheers.  :smile:

Likelihood of loosing all use of flaps is very very low, but nevertheless they can be landed without any flaps as mentioned previous. I'm not an Airbus pilot but I would guess they'd have some form of alternate flap extention no?

In the case of a complete flap/slat jam you follow the QRH and fly VLS in selected speed (minimum selectable speed). Your performance calculations will tell you if you have available runway to stop.

 

it gets a little more complicated but those are the basics. You would need to lose two hydraulic systems to get into that kind of mess.

 

Btw, keep A/THR on, if it's working use it to reduce workload.

 

@ James - No alt flap selection

 

Regards

Flex, You beat me to it.

 

Here's good reference for how the procedure is carried out

 

http://www.smartcockpit.com/aircraft-ressources/A320-SLATS_OR_FLAPS_JAMMED.html

 

and here.

 

http://www.smartcockpit.com/aircraft-ressources/A320-Flaps_Locked_After_Takeoff.html

@ James - No alt flap selection

 

Regards

 

Interesting, thanks. Guess they determined it's highly unlikely to be needed given you can land without them and you'd have to do something serious to lose hydraulic pressure from the systems that cover them anyway.

Thank you. Here is a video of an airbus landing with flaps failure.

 

From that video it looks like they couldn't retract flaps after take off - returned to the origin and landed with config 1 + F

Why do you need to be in a certain flap configuration to land? Couldn't you just reduce the throttle and trim the aircraft?

 

I can land in a boeing 737 with no flaps engaged and reduced throttle (although this may not be the proper procedure) so why do you need to do so in the airbus?

 

Is it just the way the wings, trim and flaps interact with the angle of attack?

Are you being serious? just because you can land your Microsoft simulator do you think that has any reflection of reality?

 

A flaps up landing is a serious event in a Boeing /Airbus or any other airliner. Your vref will be incredibly high, if you are fortunate enough to bring 60+ tonnes of metal to a stop before an overun you still have to deal with red hot brakes and a potential fire.

Increased landing speed implies a very high energy state of the aircraft. At the end of the landing roll this energy has been completely transformed into either heat (brakes), bent metal - or a combination of both!   :unsure:

 

And you can't reduce your landing speed to your liking - you need to keep safe from the stall area.

 

Plus, your vertical speed (fpm) creates a momentum that you have to 'break' at some point for some sensible touchdown rate - pretty tough procedure at those insane flaps up minimum safe speeds!

 

(Just to prove that FSX is a game, not a simulator. :ph34r:  :rolleyes:  )

Are you being serious? just because you can land your Microsoft simulator do you think that has any reflection of reality?

 

A flaps up landing is a serious event in a Boeing /Airbus or any other airliner. Your vref will be incredibly high, if you are fortunate enough to bring 60+ tonnes of metal to a stop before an overun you still have to deal with red hot brakes and a potential fire.

 

No, thats why I am asking experts like you because I am not educated in aviation matters and hope to learn from great minds  

 

I had hope MS flight sim (or P3D) had a little reflection of reality, perhaps XP is a little better?

Increased landing speed implies a very high energy state of the aircraft. At the end of the landing roll this energy has been completely transformed into either heat (brakes), bent metal - or a combination of both!   :unsure:

 

And you can't reduce your landing speed to your liking - you need to keep safe from the stall area.

 

Plus, your vertical speed (fpm) create a momentum that you have to 'break' at some point for some sensible touchdown rate - pretty tough procedure at those insane flaps up minimum safe speeds!

 

(Just to prove that FSX is a game, not a simulator. :ph34r:  :rolleyes:  )

 

I will need to practice my flaps up landings then -- which aircraft - airbus or boeing 'performs' better in this hypothetical example? 

I, being a rather simple mind ( :lol:), am not aware of an in-depth simulated Airbus for FSX (not yet, anyway, FSL may be going to change that): The Aerosoft Airbus is normal procedures only, (flap) failures aren't modelled, so I doubt they created a flight envelope that caters for flaps-up landings.

 

Since PMDG Boeings offer sophisticated failures modes, chances are they also modelled the corresponding behaviour in flight and during landing. (Haven't tested that, though.)