747-600X From United States of America, joined Jan 2000, 2795 posts, RR: 14 Posted (14 years 10 months 3 weeks 1 day 5 hours ago) and read 972 times:
I heard that someone got an award for designing the 747's wheel arrangement, since no one had ever done anything on that scale before. I also heard that the 747s wheels are the same as those on the 707. 2 questions: If this is true, are the trucks the same as well? Who designed the 747's wheels, and what do you reckon he puts on his passport, "Landing Gear Designer"?
Thanks for any insights!!
"Mental health is reality at all cost." -- M. Scott Peck, 'The Road Less Traveled'
Asqx From United States of America, joined Jun 1999, 619 posts, RR: 0
Reply 1, posted (14 years 10 months 3 weeks 1 day 4 hours ago) and read 892 times:
The 747 landing gear was desgined to have the same pressure footprint as the 707. What this means is that each tire puts the same amount of pressure on the runway surface per square inch as on the 707. That way any runway that could withstand the 707 and not crack could support the 747 without being thickened.
I think the tires are the same, or pretty close, but the trucks are different becuase although the tires support the same load, the trucks have a much greater load to carry.
The guy who designed them probably put aerospace engineer on his passport.
Hmmmm... From Canada, joined May 1999, 2109 posts, RR: 5
Reply 3, posted (14 years 10 months 3 weeks 22 hours ago) and read 872 times:
Hmmmm... . I understand the 747-400 to have about 3+ x the MGTOW of a 707 which is really just a slightly longer 727. And the 707 has 8 rear wheels. The 747 has only twice that number, 16 rear wheels. That would mean that it has twice the number of tires to support 3 x the load. Then the pressure per sq. inch could not be the same. It would be greater. What am I missing?
An optimist robs himself of the joy of being pleasantly surprised