Twin take off on one engine?

On Sep 3, 3:47*pm, Clark wrote:
"Flaps_50!" wrote in news:d7b4faf4-4167-46cd-8692-
:



According to the data I can find, the 747 can't climb on one engine so
how can it take off?
Cheers

Hmmm, empty weight is about 360,000 lbs plus a little fuel and 50,000 lbs of
thrust. It aught to work. I suspect your data are in error or perhaps you're
considering a loaded 747.

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there should be a "sig" here

Yeah, but how *long* would the runway have to be assuming ideal
conditions of say 68 F at sea level and head wind of 20mph? Its not
just the weight, it's the rolling resistance of the mains as well.
What's the longest runway in the world? (Edwards, Groom Lake,
Bonneville salt flats notwithstanding).

I googled the heck out of it and could not find any thing single
engine take off of a 747.