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MD 11 Structural Problems?  
User currently offlineFokker50 From Colombia, joined Jun 2004, 359 posts, RR: 1
Posted (10 years 1 month 4 weeks 11 hours ago) and read 2027 times:

Hi, I was observing this photo, and I was questioning, does the nose gear of the MD is in a bad structural position??


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Photo © Europix



Fokker50


Bogota, the South american gateway!
7 replies: All unread, jump to last
 
User currently offlineAerosvit From Ukraine, joined Feb 2004, 112 posts, RR: 1
Reply 1, posted (10 years 1 month 4 weeks 11 hours ago) and read 2011 times:

prehaps its because the ground is on a slant...


Clava Ykraini
User currently offlineKlaus From Germany, joined Jul 2001, 21470 posts, RR: 53
Reply 2, posted (10 years 1 month 4 weeks 11 hours ago) and read 1988 times:

The A320 series has the same design. The only good reason I could think of would be that it´s self-centering that way... (maybe as another level of safety in case something happens to the actuators during takeoff or landing roll, or simply for smoother control with less vibrations at higher speeds)

User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 3, posted (10 years 1 month 4 weeks 10 hours ago) and read 1957 times:

VERY common under hard turning situations and no big deal. I've seen several other airframes do that and while taxing I've done it myself.


"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineB727fan From United States of America, joined Apr 2004, 308 posts, RR: 0
Reply 4, posted (10 years 1 month 4 weeks 9 hours ago) and read 1889 times:

Klaus I think you're right. In fact, German engineers have also implemented this sort of design characteristics in their cars. Turn the wheel on any German car full swing and you'll notice that wheels are slanted, thus resulting in more stability and better handling. But in case of planes, I think your explanation makes good sense.

User currently offlineUA777222 From United States of America, joined Dec 2003, 3348 posts, RR: 11
Reply 5, posted (10 years 1 month 4 weeks 9 hours ago) and read 1856 times:


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Photo © Wietse de Graaf - AirTeamImages




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Photo © Carlos A. Morillo Doria



You can bend any gear if you try hard enough. Some more than others. If anything it shows that it's well designed b/c you straighten it back out and the a/c has no issues. Think of a car in the intersection. If another car comes and hits it's back or front from the side it will spin (the hitting car (force) would be the power from the thrust) but if you hit it dead on right in the middle of the car it will go forward. This is simple physics, not the a/c.

No WORRIES!

Thanks again!

UA777222



"It wasn't raining when Noah built the ark."
User currently offlineMax Q From United States of America, joined May 2001, 4528 posts, RR: 19
Reply 6, posted (10 years 1 month 4 weeks 9 hours ago) and read 1813 times:

Had the same problem on the md80, for some reason best known to Douglas the nosewheel strut is mounted at a forward slant.


As a result in a tight turn the outside nosewheel will lift of the ground making steering very tricky especially on a wet or icy surface.

Turning onto a runway in boston we hit a slippery patch and nearly went off the side.

Bad design, same on the DC10 but that was the least of it's problems...



The best contribution to safety is a competent Pilot.
User currently offlineBroke From United States of America, joined Apr 2002, 1322 posts, RR: 3
Reply 7, posted (10 years 1 month 3 weeks 6 days 18 hours ago) and read 1583 times:

One advantage to a nose gear like this is that you can change a nose gear tire without having to jack the airplane. Just turn the nose gear all the way to the opposite side of the tire you need to change. The DC-9 has a similar feature and not having to jack the airplane has saved a lot of time.

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