A380 MLG Tire Scuffing/Skidding
Join Date: Apr 2000
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I'm wondering what the fuel loading situation was - perhaps heavy wing load and light centre tank loads - combined with hot ambient temps? But the tires buckling like that should not happen. I know of no test on the -400 that produced that effect on wing tires.
Trash Hauler - I disagree. This is not a pass of a normal test that I am aware of. I've spot turned the -400 & 777, and been under tow in tight turns at max weight (which produces a tighter steering angle) and I have never seen the tires peel off the rims. If the piccies are genuine, I'm sure Airbus have some head scratching to do. It is possible this was meant to simulate some ham-fist cranking the steering over to max at too high a ground speed, but even so....you'd expect the nose gear to give up traction first and slide.
I'm very curious, and still envious of those that get to fly this aircraft.
Trash Hauler - I disagree. This is not a pass of a normal test that I am aware of. I've spot turned the -400 & 777, and been under tow in tight turns at max weight (which produces a tighter steering angle) and I have never seen the tires peel off the rims. If the piccies are genuine, I'm sure Airbus have some head scratching to do. It is possible this was meant to simulate some ham-fist cranking the steering over to max at too high a ground speed, but even so....you'd expect the nose gear to give up traction first and slide.
I'm very curious, and still envious of those that get to fly this aircraft.
Join Date: Jul 2000
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The rear axle of the body gear is steerable like the 777 MLG a difference is the steerable axle has no brakes fitted.
http://www.airliners.net/open.file/862877/L/
SMOC
http://www.airliners.net/open.file/862877/L/
SMOC
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SMOC,
Thanks for the link to the underside of the A380 but the photos of the tires getting the scuffing/skidding appear to be the four wheel trucks mounted outboard on the wings.
Thanks for the link to the underside of the A380 but the photos of the tires getting the scuffing/skidding appear to be the four wheel trucks mounted outboard on the wings.
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Looks like to me this occured during a sharp left turn when pushing the aircraft backwards. Straighten the nose wheels and pull foward, dosen't look like any damage done from these shots. Would like to see a better shot from a few more feet back.
Join Date: May 2002
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MLG stress
Guys!!
1)in my opinion that is an IL86 not a 747, is too low over the wheels plus those brake vents are not boeing (close guess?)
2) The body gear is not steerable,
3) it looks really a test , Who would be there during a Pusch back getting pictures?
4) the kind of tarmac...russian airport?
Sorry Guys!!!
I still think that it is a IL86 however it could be an A 340-600
3 boogies twin tandem MLG
the picture are referring most probably to a test since you can notice in one picture one red ban from a lock pin still in place to avoid the accidental retraction or gear collapse.
in another pics you can see also an observer jusr in the back ground (he looks russian...)sorry. Have a nice day whatever you are.
1)in my opinion that is an IL86 not a 747, is too low over the wheels plus those brake vents are not boeing (close guess?)
2) The body gear is not steerable,
3) it looks really a test , Who would be there during a Pusch back getting pictures?
4) the kind of tarmac...russian airport?
Sorry Guys!!!
I still think that it is a IL86 however it could be an A 340-600
3 boogies twin tandem MLG
the picture are referring most probably to a test since you can notice in one picture one red ban from a lock pin still in place to avoid the accidental retraction or gear collapse.
in another pics you can see also an observer jusr in the back ground (he looks russian...)sorry. Have a nice day whatever you are.
Join Date: May 2000
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Assuming the pics are genuine, the fact that Airbus put a copyright notice on them suggests they intended them to get out, which in turn suggests that they at least don't think they are commercially embarrassing. (Though I only did Kremlinology 101, not the advanced stuff)
Join Date: Aug 2004
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Can we assume that Airbus will be lobbying for chicanes on the high speedturn offs at major airports? If they don't get them will they advise the airlines not to land at that airport...?
Join Date: Feb 2002
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Take any heavy wide-body, make a tight 90 degrees turn and stopped immediately before rolling forward.
Go down and look at your gear, it's not so extreme but if you have never saw it, I can guaranteed you'll be surprised.
Or look at the gears and tyres during a 180 at minimum radius.
Guess why they say to roll forward at least one fuselage length to remove the stress on gears and tires....
I remerbered vividly the fights with marshaller and tower in Bamako that's absolutly want our 330's to be put in the extreme corner of the apron...
For a test at the limit these pictures really don't surprised me.
Go down and look at your gear, it's not so extreme but if you have never saw it, I can guaranteed you'll be surprised.
Or look at the gears and tyres during a 180 at minimum radius.
Guess why they say to roll forward at least one fuselage length to remove the stress on gears and tires....
I remerbered vividly the fights with marshaller and tower in Bamako that's absolutly want our 330's to be put in the extreme corner of the apron...
For a test at the limit these pictures really don't surprised me.
Join Date: Jul 2002
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Dear Sky330
It's all well and good to roll forward a fuselage length, but who
will be liable for repairing the tarmac after each 90 degree lineup?
6 months late, 12 month's late
It's all well and good to roll forward a fuselage length, but who
will be liable for repairing the tarmac after each 90 degree lineup?
6 months late, 12 month's late
Join Date: Feb 2002
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boofta,
Obviously the airport,
now that may put some braking force on the acceptance of A380's from some airport, if it is more a problem than with other wide-bodies.
In quite a few african airports, every aircraft have to make an 180 after every landing or before every take-off, and runway suffered a lot when you do that with a wide-body at MTOW. Still it is an accepted procedure by everyone,
Airport authorities pay the bill for the tarmac, airlines pay the bill for tyres and landing gear maintenance...
Obviously the airport,
now that may put some braking force on the acceptance of A380's from some airport, if it is more a problem than with other wide-bodies.
In quite a few african airports, every aircraft have to make an 180 after every landing or before every take-off, and runway suffered a lot when you do that with a wide-body at MTOW. Still it is an accepted procedure by everyone,
Airport authorities pay the bill for the tarmac, airlines pay the bill for tyres and landing gear maintenance...
Join Date: Apr 2004
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All this fuss about slightly distorted tyres!!! Sky330 is on the right track. I suggest that if any of you sky jockeys have a chance to see a push back from the outside than you will see how much a tyre deforms on a sharp turn...pause for breath... The worn shoulder can be seen on some body gears of Jumbos. So gents/ladies do not fret. The tyres can take it!
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Maybe this is my (large-scale) ignorance, but I don't see categorical evidence from the three pics that any of the tyres are off the rim.
Can someone please point out the evidence that a tyre is actually off the rim, rather than being in a highly deformed state, but with the strain within the tyre originating from the rim?
Do aircraft tyres stay inflated when off the rim - all of the tyres here look inflated to me?
Can someone please point out the evidence that a tyre is actually off the rim, rather than being in a highly deformed state, but with the strain within the tyre originating from the rim?
Do aircraft tyres stay inflated when off the rim - all of the tyres here look inflated to me?
