asgeirs
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A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 12:00 am

An A380 jet has been in Iceland today to perform crosswind tests at Keflavik Airport (KEF). This was decided after it became clear that it would be extremely windy in KEF today.

Here is an article (in Icelandic) with some photos:
http://mbl.is/mm/frettir/frett.html?nid=1234046

A Boeing 777-300 prototype came to KEF for the same purposes on April 18, 1998. Other airliners have probably been brought here in the meantime but I can't recall any at the moment.
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teva
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 2:00 am

If you scroll down on the article, you can see an impressive video !!!
It looks so easy...
Tx for the link
Teva
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scouseflyer
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 2:05 am

Amazing - reminds you of the scale of that thing when the 737 taxis past looking like a toy plane!

It looks unusual as a whitetail!
 
asgeirs
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 2:13 am

Hahaha - I didn't notice the video link until Teva mentioned it  laughing 

The aircraft seems to do well in the crosswind according to the video.  Smile

Funny how "small" the Bluebird 737-300 looks compared to it's bigger distant relative.  Wow!
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northernlights
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 2:37 am

Here is the link to the video:
http://www.mbl.is/mblvideo/157.wmv

[Edited 2006-11-10 18:38:54]
 
yooyoo
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 3:16 am

Great video. The 777 C/W landing video was also great.

Thanks for the link(s)
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redflyer
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 3:27 am

Quoting Northernlights (Reply 4):
Here is the link to the video:
http://www.mbl.is/mblvideo/157.wmv

Great video! Thanks for posting! Very impressive.

Anyone know what the landing weight was -- was she empty and light or carrying any ballast during these tests?
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Jammin
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 3:58 am

It's cool to think how the team in TLS would be saying, "Ah, it's going to be windy in KEF tomorrow, let's head over there for some cross-wind tests."

Is this how this happens, or is there a lot more planning involved with these kind of tests. But, it is very dependent on changing weather conditions.. so, I guess it is pretty last minute.
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sphealey
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 6:16 am

> Is this how this happens, or is there
> a lot more planning involved with these
> kind of tests.

In _21st Century Jet_ they mentioned the flight testing crew "flying around North America looking for a strong-enough crosswind". Must be fun: 'here, take this petrol credit card and fly this 777/380 around till you find some wind'.

Only downside is weather reporting is so much better today than in 1990 that you probably can't just disappear for a week and tell the boss "couldn't find any wind"!

sPh
 
corey07850
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 10:49 am

Here's a question...

In the videos of the 747 and 777 crosswind tests they carried the crab all the way to touchdown, meaning the plane landed with a large angle to the runway... In the A380 video they straighten out the aircraft before landing...

This seems to be more about testing the pilot's abilities than the plane's to handle a crosswind landing, or am I missing something?
 
ZRHnerd
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 11:03 am

Impressive video, the slow motion on touch down is cool!

Quoting Sphealey (Reply 8):
that you probably can't just disappear for a week and tell the boss "couldn't find any wind"!

 rotfl 
 
SJUSXM
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 11:26 am

WOW

the plane b4 touchdown looks like it is facing the camera

and then it land perpendicular to the camera

amazing
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KPDX
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 12:02 pm

Quoting SJUSXM (Reply 11):

[email protected] [email protected]$ a pretty c00l vide0!

 Wink

KPDX Big grin
 
Yellowstone
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 12:13 pm

Of course, if this was a revenue flight, all the pax would be like, "Oh my god, the plane was going sideways when it landed! The pilot must have totally screwed up that landing!"
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redflyer
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 1:34 pm

Quoting ZRHnerd (Reply 10):
Impressive video, the slow motion on touch down is cool!

Very cool, indeed. Watch that far right (left as you're watching the video) MLG bogey bounce on touch-down. I only wish there was a close-up of the landing gear on that video.
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Fly2HMO
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 2:18 pm

That video looks accelerated a bit. Only slightly maybe 20% or so, you can tell by how the camera shakes in an "unnatural" rhythm. Compare it to other A380 videos in flightlevel350.com you'll notice the difference.
 
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777Dad
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 3:38 pm

I can't imagine having something "That Big" coming at me pretty much sideways?
WOW!  Smile

Jeff
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cancidas
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 3:41 pm

check out the wing flex as it bounces around in the wind. that's one ugly plane, but it's definately fun to watch....
"...cannot the kingdom of salvation take me home."
 
redflyer
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 3:46 pm

Quoting FLY2HMO (Reply 15):
That video looks accelerated a bit. Only slightly maybe 20% or so, you can tell by how the camera shakes in an "unnatural" rhythm. Compare it to other A380 videos in flightlevel350.com you'll notice the difference.

Gotta disagree on that. Look at the rotating beacons on the top and bottom of the WhaleJet's fuselage. The beacons appear to flash at the same pace in all of the video sequences.
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JohnKrist
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 4:58 pm

Whoa, cool video, but man that second landing seems to be awfully close to the edge of the RWY!
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mygind66
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 5:56 pm

Thanks for sharing!!  Wink

Impressive!

Some other good videos with cross winds (despite are Boeings...):



Enrique
 
mygind66
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 6:04 pm

Talking about this Boeing video, any knows where was filmed?

Cheers

Enrique
 
ncelhr
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 7:29 pm

Quoting Corey07850 (Reply 9):
In the videos of the 747 and 777 crosswind tests they carried the crab all the way to touchdown, meaning the plane landed with a large angle to the runway... In the A380 video they straighten out the aircraft before landing...

This seems to be more about testing the pilot's abilities than the plane's to handle a crosswind landing, or am I missing something?

Actually, it might well be the camera angle. The camera's should have been placed further down the runway. In the A380 video the whale seems to touchdown whilst the camera has already had to pan across. Had the camera been set-up further down, we would have been able to see if the aircraft landed at angle.

Still from the smoke off the tires, it looks like some skidding took place!

Also did you notice how the wind picked up the aircraft on take-off?

Awesome stuff.
 
BoeingOnFinal
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 8:01 pm

Boeing seems to test the main landing gear better than Airbus (from the small clips we have seen though), since they actually touch down in the crabbed position. Did Airbus do such tests, or is it not necessary?
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chrisnh
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 9:17 pm

Quoting 777DAD (Reply 16):
I can't imagine having something "That Big" coming at me pretty much sideways?
WOW! Smile

The camera guy was probably thinking he was dead meat. How do you say, 'He's coming right at me...Noooooooooooooooooooo!' in Icelandic? Probably, 'blah-blah-blah-blah-blah...Noooooooooooooooooooo!'

Chris in NH
 
Pihero
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 9:44 pm

Quoting Corey07850 (Reply 9):
In the videos of the 747 and 777 crosswind tests they carried the crab all the way to touchdown, meaning the plane landed with a large angle to the runway... In the A380 video they straighten out the aircraft before landing...

This seems to be more about testing the pilot's abilities than the plane's to handle a crosswind landing, or am I missing something?

To the contrary. X-wind landing techniques are pretty much universal. The manufacturer has to demonstrate that such a maneuver doesn't require exceptional piloting qualities.

Quoting BoeingOnFinal (Reply 23):
Boeing seems to test the main landing gear better than Airbus (from the small clips we have seen though), since they actually touch down in the crabbed position. Did Airbus do such tests, or is it not necessary?

Stop seeing superiority -from whatever source - in flight tests. If anything, that video shows how well the aircraft handles. In my opinion, the landing-with-crab technique is barbaric and most of my colleagues think the same. In extreme x-winds, a mixture of crab /bank is generally used.
Do to its inherent inertia, the 747 was the easiest aircraft to land in a x-wind that I've experienced. Apparently, the 380 has the same qualities.
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mygind66
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 10:59 pm

Quoting Pihero (Reply 25):
Stop seeing superiority -from whatever source - in flight tests

I'm happy to read a real and professional comment about any subject here. What I read normally are suppositions and conjectures with no basis at all....

Très bien Pihero!

Enrique
 
cptspeaking
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RE: A380 Performing Crosswind Tests In KEF Today

Sat Nov 11, 2006 11:32 pm

Quoting BoeingOnFinal (Reply 23):
Boeing seems to test the main landing gear better than Airbus (from the small clips we have seen though), since they actually touch down in the crabbed position. Did Airbus do such tests, or is it not necessary?

FAR 25 : Airworthiness standards for transport category airplanes

FAR 25.233 Directional stability and control.
top

(a) There may be no uncontrollable ground-looping tendency in 90° cross winds, up to a wind velocity of 20 knots or 0.2 VSR0, whichever is greater, except that the wind velocity need not exceed 25 knots at any speed at which the airplane may be expected to be operated on the ground. This may be shown while establishing the 90° cross component of wind velocity required by §25.237.

(b) Landplanes must be satisfactorily controllable, without exceptional piloting skill or alertness, in power-off landings at normal landing speed, without using brakes or engine power to maintain a straight path. This may be shown during power-off landings made in conjunction with other tests.

(c) The airplane must have adequate directional control during taxiing. This may be shown during taxiing prior to takeoffs made in conjunction with other tests.


That seems to talk about taxiing more that t/o and landing, so here is:


FAR 25.237, referred to in the previous section...
(a) For landplanes and amphibians, a 90-degree cross component of wind velocity, demonstrated to be safe for takeoff and landing, must be established for dry runways and must be at least 20 knots or 0.2 VSR0, whichever is greater, except that it need not exceed 25 knots.

Your CptSpeaking
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lufthansi
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RE: A380 Performing Crosswind Tests In KEF Today

Sun Nov 12, 2006 12:01 am

One question: At each of the amazing crosswind landings you can clearly see the spoilers extending. Are they only used for to keep the jet on ground because of the high sinkrate during a crosswind landing and are retracted after nose wheel touchdown for a touch and go maneuvre or do they perform a full stop landing each time?
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cptspeaking
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RE: A380 Performing Crosswind Tests In KEF Today

Sun Nov 12, 2006 1:06 am

Quoting Lufthansi (Reply 28):
One question: At each of the amazing crosswind landings you can clearly see the spoilers extending. Are they only used for to keep the jet on ground because of the high sinkrate during a crosswind landing and are retracted after nose wheel touchdown for a touch and go maneuvre or do they perform a full stop landing each time?

I would assume a full stop, just as in the Boeing videos, just because they have to demonstrate not only safe landings, but safe takeoffs as well, and a touch and go isn't really a complete takeoff. Personally, if I were flying such a mammoth airplane in such conditions, I would rather stop and concentrate on what I was doing specifically rather than try and hurry through getting my flaps up, spoilers retracted, and whatever else they need to do while hurtling down the runway over 100 kts, all the while fighting a HUGE crowsswind. twocents 

Quoting CptSpeaking (Reply 27):
demonstrated to be safe for takeoff and landing

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baldursveins
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RE: A380 Performing Crosswind Tests In KEF Today

Sun Nov 12, 2006 1:40 am

Sorry that I only caught this discussion so late, bur here is a 10 photo selection out of a lot more taken yesterday at Keflavik. It may answer some of the questions that arose here and maybe prompt some more.
The landings were all fullstop on runway 02 with a 90° crosswind from aound 280° of 40 knots gusting to 50, a lot more that mentioned in FAR 25.237.
The A380 then taxied off the runway to the left about 1000 feet from the the end and turned onto runway 20 for a takeoff in the other direction. It made sis landings like that with the last for a fuel stop. The takeoffs were all in the other direction. It only made one touch and go on runway 29.
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Jammin
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RE: A380 Performing Crosswind Tests In KEF Today

Sun Nov 12, 2006 4:02 am

Quoting Mygind66 (Reply 20):
Some other good videos with cross winds (despite are Boeings...):

Wow, what a nice video. Thanx for sharing.
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A342
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RE: A380 Performing Crosswind Tests In KEF Today

Sun Nov 12, 2006 5:09 am

Quoting BaldurSveins (Reply 30):

One of the takeoff photos is simply amazing ! KEF should have its runways widened !
Exceptions confirm the rule.
 
Pihero
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RE: A380 Performing Crosswind Tests In KEF Today

Sun Nov 12, 2006 7:28 am

BaldurSveins,
Thanks a lot for these pictures.
I wish I had been there !
Contrail designer
 
DYflyer
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RE: A380 Performing Crosswind Tests In KEF Today

Mon Nov 13, 2006 1:19 am

Quoting A342 (Reply 32):
KEF should have its runways widened !

I think the rwys at KEF already are 60 meters wide. Should be wide enough for all planes.
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A342
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RE: A380 Performing Crosswind Tests In KEF Today

Mon Nov 13, 2006 3:26 am

Quoting DYflyer (Reply 34):
think the rwys at KEF already are 60 meters wide. Should be wide enough for all planes.

I just checked it, seems you're right... WTF, have you seen the takeoff picture where the mud is blown around ?
Exceptions confirm the rule.
 
DYflyer
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RE: A380 Performing Crosswind Tests In KEF Today

Mon Nov 13, 2006 5:59 am

Quoting A342 (Reply 35):
WTF, have you seen the takeoff picture where the mud is blown around ?

I think it looks worse in the picture than it actually was. Similar dust-clouds can sometimes be seen at OSL when a 747 takes off or lands.
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