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Could A Six Wheel Widebody Work?  
User currently offline747400sp From United States of America, joined Aug 2003, 3757 posts, RR: 2
Posted (3 years 2 months 22 hours ago) and read 2646 times:

If there was wires large enough in the future, could we see wide bodies with out bogie's in the future? I really hope not!

3 replies: All unread, jump to last
 
User currently offlineBlueJuice From United States of America, joined Jun 2010, 254 posts, RR: 0
Reply 1, posted (3 years 2 months 21 hours ago) and read 2612 times:

I'm guessing not. Not enough rubber on pavement to spread the load while keeping the wheel diameter within reason. Can't imagine such a large wheel being cost effective.

I recall the B-36 Peacemaker originally had a single 9' diameter wheel on the main landing gear. Only 3 runways at the time could support the beast. The MLG was redesigned with 4 wheels bogies and eased the problem of too much pressure on runways.


User currently onlinerwessel From United States of America, joined Jan 2007, 2411 posts, RR: 2
Reply 2, posted (3 years 2 months 19 hours ago) and read 2574 times:
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Also, really big tires are really heavy. And hard to stow.

User currently offlinespacecadet From United States of America, joined Sep 2001, 3669 posts, RR: 12
Reply 3, posted (3 years 1 month 4 weeks 1 day 20 hours ago) and read 2262 times:

Yeah the issue is the runways at most airports. It's not so much the plane itself. I remember reading something about the 777 or 767 when it was being designed and how LGA's runways actually needed to be strengthened just for it - and it has bogied wheels. (LGA's runways are partially on piers.). The 777 was initially intended to operate at LGA - one of the reasons for the folding wing option - so it wouldn't be as strange as it sounds to say that now.

The issue is the weight per wheel. When you start subtracting wheels, you start adding to the weight on any given wheel, until you reach the breaking point of the runway for that little contact patch where the tire is resting on it. Runways are all designed to withstand X number of lbs. per wheel, and airliners are therefore designed to have the commensurate number of wheels to distribute that weight given the airports the airliner is intended to fly into.

So basically, unless you rebuild all the major airports' runways all around the world, then no, I don't think we'll be seeing a six wheel widebody any time soon.

[Edited 2011-10-21 19:14:37]


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