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How Much Weight Can 747's Carry?  
User currently offlineGalilee From , joined Dec 1969, posts, RR:
Posted (12 years 4 months 3 weeks 4 days 8 hours ago) and read 5301 times:

Every time I see NASA's 747 ferrying the Space Shuttle after landings, I am amazed. I mean, first of all, the 747 is just huge, but when they mount that shuttle on the back, I think, "How can it fly!?". Is this particular 747 modified some way like bigger engines? Another thing that suprises me is that people actually fly in it while the shuttle is riding piggy-back, like workers and stuff. Was the 747 designed to carry that much weight?

11 replies: All unread, jump to last
 
User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 1, posted (12 years 4 months 3 weeks 4 days 7 hours ago) and read 5270 times:

About 120 tons of actual payload. Since the shuttle is carried on the outside, does it produce any lift to compensate for it's weight?

LY744.



Pacifism only works if EVERYBODY practices it
User currently offlineAvi From Israel, joined Sep 2001, 939 posts, RR: 6
Reply 2, posted (12 years 4 months 3 weeks 3 days 18 hours ago) and read 5251 times:

NASA has 2 Boeing 747 as a shuttle carrier.
The first one was an American Airlines B747-123 and the second was a Jal 747 SR-46.
They were stripped of all airline equipment and the fuselage was reinforced to support weight of the 68 ton shuttle. The additions to the roof and the tail reduced the aircraft performance and its limit now (with or without the shuttle) to maximum Mach 0.6 (around 250 knots) and 26,000 feet.
If I remember correctly it can’t fly coast to coast non stop!
The gross weight of the 747 and the shuttle is 584,000 lbs, 264,900kg, and the maximum take off weight is 710,000lbs, 322,700kg.
The shuttle is mounted on the back of the B747 with a positive angle of attack to provide some lift.





Long live the B747
User currently offlineN79969 From , joined Dec 1969, posts, RR:
Reply 3, posted (12 years 4 months 3 weeks 3 days 13 hours ago) and read 5239 times:

The published MTOW for the 744 (current) is 875,000 lbs.

User currently offlineGalilee From , joined Dec 1969, posts, RR:
Reply 4, posted (12 years 4 months 3 weeks 3 days 11 hours ago) and read 5227 times:

Thanks for the replies, guys!  Big thumbs up

User currently offlineBoeing nut From , joined Dec 1969, posts, RR:
Reply 5, posted (12 years 4 months 3 weeks 3 days 10 hours ago) and read 5219 times:

Published MTOW is published @ 875K lbs. But the 744 during certification, set a world record for heaviest aircraft to ever takeoff. It took off @ 892,450 lbs.!!!!

Talk about some wing bending!! Whoa!!!


User currently offlineEGGD From United Kingdom, joined Feb 2001, 12443 posts, RR: 35
Reply 6, posted (12 years 4 months 3 weeks 3 days 10 hours ago) and read 5211 times:

Yes, but its not the world record anymore after the An-225 broke the 1,000,000lbs barrier.

User currently offlineWoodsboy From United States of America, joined Mar 2000, 1029 posts, RR: 3
Reply 7, posted (12 years 4 months 3 weeks 3 days 9 hours ago) and read 5201 times:

The MTOW noted above the for the NASA 747 must certainly be for the 747-100 which had a considerably lower MTOW than today's 747-400s.

User currently offlineUal777contrail From , joined Dec 1969, posts, RR:
Reply 8, posted (12 years 4 months 3 weeks 3 days 6 hours ago) and read 5183 times:

a UNITED 747 ORD-HKG has a max takeoff of 875,000 lbs.

User currently offlineBoeing nut From , joined Dec 1969, posts, RR:
Reply 9, posted (12 years 4 months 3 weeks 3 days 6 hours ago) and read 5182 times:

EGGD,

Yea, I know the record didn't last long  Sad , but it's still another record that the mighty "whale" has achieved!!


User currently offlineAvi From Israel, joined Sep 2001, 939 posts, RR: 6
Reply 10, posted (12 years 4 months 3 weeks 2 days 19 hours ago) and read 5175 times:

The MTOW noted above the for the NASA 747 must certainly be for the 747-100 which had a considerably lower MTOW than today's 747-400s.

You right, but the question was about NASA B747 so these were the numbers.



Long live the B747
User currently offlineN79969 From , joined Dec 1969, posts, RR:
Reply 11, posted (12 years 4 months 3 weeks 2 days 18 hours ago) and read 5168 times:

Didn't Boeing specially fly a NW 742 at a million pounds for testing purposes? I thought I read that somewhere a while ago.

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