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  #61 (permalink)  
Old 22-September-2005, 06:27 PM
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Thank God they did!
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  #62 (permalink)  
Old 22-September-2005, 06:55 PM
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Thank the extensive and intense training commercial pilots get, it had more to do with getting them down in one piece.
There where no miracles involved.
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  #63 (permalink)  
Old 22-September-2005, 07:06 PM
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Indeed no miracles. A bit of luck that the nosegear (or what was left of it) didn't encounter runway bumps on which it broke off, plus the lack of a slipping motion. Very good piloting, good design and a bit of luck sums up to one perfect emergency landing.

Sioux city wasn't a miracle. But it was amazing talent (the feel of flying) and professionality of the pilots combined with LOTS of luck that saved at least some lives there. Those pilots only did what they should do (plus they were saving themselves as well) but the medals afterwards weren't over the top IMO!
(I'm a bit in doubt whether they should have received them though, for the simple reason that some other pilots tried just as hard, were just as professional and brave but could not save the aircraft due to different circumstances.)
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Old 22-September-2005, 07:22 PM
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I was nervous they were standing under the nose. It loos to be like they would have had some mobile starirway under the nose for an additional prop.

It would have been bad to be stepping out on the stairs to the side and have the plane drop in a scissors action with a poor soul caught in between.

Nasty.

There was a tornado on the ground in Minn. and a level 5 storm in the gulf as that plane was coming down.

That is some bad juju.
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Old 22-September-2005, 07:24 PM
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I haven't seen images, but I assume they placed a stand underneath it like they use when loading cargo planes, or even replace landing gears? Emergency crews certainly will have lift systems.

Getting the plane away afterwards must have been a fun task...
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Old 23-September-2005, 08:45 AM
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Quote:
Originally Posted by Nicolas
...Very good piloting, good design and a bit of luck sums up to one perfect emergency landing....
Yes, but so far, have seen neither pilot nor crew that pulled it off, in the TV coverage.
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Old 23-September-2005, 10:48 AM
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They're probably busy talking to the FAA, demanding raises, drinking beer, stuff like that. Airline personel don't get to just yak away to the media. They have to be given permission to by the airlines' public relations department and that ain't going to happen until the airline covers it's posterior.
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Old 23-September-2005, 07:55 PM
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Okay, that makes sense.
Airbus has some covering to do, too:
September 23, 2005
"...Flight 292 marked at least the seventh time that the front landing gear of an Airbus jet has locked at a 90-degree angle, forcing pilots to land commercial airliners under emergency conditions...No one has been injured in the incidents, which span about a decade..."
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Old 23-September-2005, 08:22 PM
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Now that I've missed a couple days of this thread, my comments:
1. I kept having to change channels when the announcers said something stupid. That took about five minutes, on the average. One guy, a supposed "expert" said he didn't understand the previous serivice bulletin regarding a nose gear steering o-ring because o-rings are hydraulic components and the A320 is a Fly-By-Wire airplane and doesn't need hydraulics!
2. Excellent job by the pilots!
3. I was surprised they didn't use the wing spoilers on the landing. They're normally used to kill lift and help braking performance by increasing weight on the wheels. They also tend to cause a bit of an upward pitching moment, which would have taken weight off the nosewheel.
4. In the replays, after the wheel burst into flame, you could see the flame brighten whenever they were going over the intermittent paint stripes on the centerline! Interesting.
5. Lean/6Sigma -- better keep my mouth shut about this! I will say that no process is immune to being corrupted by management greed.
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Old 24-September-2005, 06:00 AM
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Quote:
“While rotated nose landing gear is uncommon, it has happened in the past, with a similar outcome — safe landing, no injuries,” Greczyn said in an e-mail. “Last night’s incident concluded exactly as Airbus expected it would. Flight crews are trained to handle such situations and aircraft are designed to withstand such landings.”
Simply amazing, Donnie B., but there was no mention of the moving carry-on luggage or passengers to the rear.
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Old 26-September-2005, 02:01 PM
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assuming the moving people rearward story was true in the first place-how much effect would it have anyway
i looked at http://www.airliners.net/info/stats.main?id=23 which listed the a320 weight as 42.2 tonnes and pass cap of 179
i can `think' that geomeotry of landing gear wtc would cause a rearward weight transfer yes..

but would it cause a `significant' effect on the nosewheel if it was done??

(any bored maths types would like to churn some numbers?)
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  #72 (permalink)  
Old 26-September-2005, 02:21 PM
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Quote:
Originally Posted by Nicolas
I haven't seen images, but I assume they placed a stand underneath it like they use when loading cargo planes, or even replace landing gears? Emergency crews certainly will have lift systems.

Getting the plane away afterwards must have been a fun task...
they have equipment for that
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  #73 (permalink)  
Old 26-September-2005, 02:37 PM
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Quote:
Originally Posted by darkhunter
Strange, some weird security message popped up when I clicked on your link. Great, the military has all my PC information now.
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  #74 (permalink)  
Old 26-September-2005, 03:40 PM
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Quote:
Originally Posted by Candy
Strange, some weird security message popped up when I clicked on your link. Great, the military has all my PC information now.

nah just the military hasnt learned to use the net yet lol(and they program nuke missiles--shudder)

bad cookie

(altho it shows candy has decent net security tho lol)

um candy care to take over the military programming duties??

id feel safer lol
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  #75 (permalink)  
Old 26-September-2005, 04:06 PM
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LOL, boppa!



The JACK,AIRCRAFT LANDI is going for a mere $7,828.00 USD. At least, that's the way I read it.
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  #76 (permalink)  
Old 26-September-2005, 11:46 PM
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Quote:
Originally Posted by boppa
assuming the moving people rearward story was true in the first place-how much effect would it have anyway
i looked at http://www.airliners.net/info/stats.main?id=23 which listed the a320 weight as 42.2 tonnes and pass cap of 179
i can `think' that geomeotry of landing gear wtc would cause a rearward weight transfer yes..

but would it cause a `significant' effect on the nosewheel if it was done??

(any bored maths types would like to churn some numbers?)
It would change the center of gravity enough to change the loading on the nose gear. Back in my loadmaster days, moving just 400 lbs of freight in a 12,000 load would have a significant effect on the aircraft's CG.

Tom
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Old 27-September-2005, 08:44 AM
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And today, that's still the case .

I'm sure they even got a load chart in their hands when the decision was made to move people to the back. The location of the load in an aircraft is of serious importance. Not like you'd tip over when somebody heads for the toilet, but seats are appointed in such a way to get a good cg if needed.

In the design of my Canard cargo plane, the position of the load was of extreme importance. Every cm counted!

LINK: "CAT" (rejected) airplane design!
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Old 03-October-2005, 10:35 AM
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Clickable wheel pics
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  #79 (permalink)  
Old 03-October-2005, 01:07 PM
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Quote:
Originally Posted by sarongsong
Not to sound cruel, but that is one awesome photo!
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  #80 (permalink)  
Old 03-October-2005, 02:28 PM
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That must have been one stiff strut and smooth (yet abrasive) runway in order to do THAT to a metal wheel without further consequences!

Indeed Candy, awesome photos. Thanks for linking them Sarongsong.
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  #81 (permalink)  
Old 03-October-2005, 02:44 PM
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Well, the wheel will have been some kind of alloy, I don't think it would have taken that much to grind it away.
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  #82 (permalink)  
Old 03-October-2005, 05:57 PM
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Still, to grind away half the wheel without blocking things into the runway and breaking off...

This grinding force is the same force that otherwise is been taken care of by the brakes in a civilised manner. Those pictures give me even more respect for the brakes! (rolling vs gliding resistance, ABS etc, I know but still )
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Old 04-October-2005, 12:13 AM
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We were looking at these pictures at work. The wheels look to me as if they are of two different types. One, the white one, appears to be aluminum, but the grey one looks like it might be some sort of composite.

Anyone know anything about Airbus wheels?
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Old 04-October-2005, 06:26 AM
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Quote:
Originally Posted by Trebuchet
We were looking at these pictures at work. The wheels look to me as if they are of two different types. One, the white one, appears to be aluminum, but the grey one looks like it might be some sort of composite.
I'm pretty sure it's the same, after all, it were left and right wheel. Maybe they look different because one was front-facing and one back-facing during this landing, so they get dirty differently.
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Old 04-October-2005, 07:34 AM
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Plus the influence of the anti-fire foam sprayed on afterwards.

Airplane wheels are made of a (light yet strong) aluminum alloy IIRC, which scrapes off quite rapidly (aluminum ain't that hard, and while the alloy is harder it still ain't titanium ).
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Old 04-October-2005, 05:05 PM
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hmm ok then
personally i thought that with the total weight of the aircraft and the forces developed by the control planes that it wouldnt have made that much difference
flying yes but once its on the ground and rolling(or skidding in this case) then 2/3's of umm..
i might rephase that bit...
i can see it would make a difference to the weight on the nosewheel-but would it be a noticable difference?
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Old 04-October-2005, 07:56 PM
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Sorry, I don't get what you're trying to say .
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Old 05-October-2005, 01:11 AM
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Quote:
Originally Posted by Nicolas
Plus the influence of the anti-fire foam sprayed on afterwards.

Airplane wheels are made of a (light yet strong) aluminum alloy IIRC, which scrapes off quite rapidly (aluminum ain't that hard, and while the alloy is harder it still ain't titanium ).
Aluminum or magnesium alloy. Most likely aluminum.

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