Guest

How Much Weight Can 747's Carry?

Tue Feb 19, 2002 10:27 am

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?
 
LY744
Posts: 5185
Joined: Sat Feb 03, 2001 11:55 pm

RE: How Much Weight Can 747's Carry?

Tue Feb 19, 2002 11:24 am

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
 
avi
Posts: 893
Joined: Sat Sep 15, 2001 1:27 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 12:35 am

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
 
N79969
Posts: 6605
Joined: Tue Jan 29, 2002 1:43 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 5:13 am

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

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 7:03 am

Thanks for the replies, guys!  Big thumbs up
 
Boeing Nut
Posts: 5078
Joined: Fri Feb 23, 2001 2:42 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 8:19 am

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!!!
I'm not a real aeronautical engineer, I just play one on Airliners.net.
 
EGGD
Posts: 11880
Joined: Sat Feb 24, 2001 12:01 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 8:27 am

Yes, but its not the world record anymore after the An-225 broke the 1,000,000lbs barrier.
 
woodsboy
Posts: 899
Joined: Sat Mar 18, 2000 5:59 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 9:18 am

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.
 
ual777contrail
Posts: 2914
Joined: Sun Feb 17, 2002 11:33 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 12:28 pm

a UNITED 747 ORD-HKG has a max takeoff of 875,000 lbs.
 
Boeing Nut
Posts: 5078
Joined: Fri Feb 23, 2001 2:42 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 12:31 pm

EGGD,

Yea, I know the record didn't last long  Sad , but it's still another record that the mighty "whale" has achieved!!
I'm not a real aeronautical engineer, I just play one on Airliners.net.
 
avi
Posts: 893
Joined: Sat Sep 15, 2001 1:27 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 10:44 pm

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
 
N79969
Posts: 6605
Joined: Tue Jan 29, 2002 1:43 am

RE: How Much Weight Can 747's Carry?

Wed Feb 20, 2002 11:58 pm

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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