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Author Topic: Could we construct a building that reached into space?  (Read 1369 times)

Offline acecharly

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Any thoughts

Cheers Ace


 

Offline CliffordK

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Re: Could we construct a building that reached into space?
« Reply #1 on: 06/07/2012 19:07:48 »
Theoretically one could.

However, practically NO.

One of the hot research topics is the idea to create a space elevator reaching to a geostationary orbit, which puts it at 35,786 kilometres (22,236 mi) high.  Just the sheer mass of a building that high would crumble the foundations. 

Low Earth Orbit (LEO) is much lower, about 160 kilometers (99 mi). 
Much more practical from constructing for Earth. 

Consider at 60 miles an hour, it takes one 1 hours to make the trek.

The stresses on such a building would still be enormous.

 

Offline acecharly

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Re: Could we construct a building that reached into space?
« Reply #2 on: 06/07/2012 19:49:46 »
When you say its only 160km to LEO it sounds very tricky and yet not that bad until the statement you make regarding it taking an hour and a half at 60 M/ph. Nice relity check there Clifford.

Lets hope one day we can manpulate the higgs field and reduce the elevators mass somehow so we dont get the crumbling. Assuming otherwise the base of such a construction would need to be a minimum of a few kilometers wide id have thought.
 

Offline syhprum

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Re: Could we construct a building that reached into space?
« Reply #3 on: 06/07/2012 20:30:14 »
I think the tallest guyed masts are about 800 meters there is a long way to go
 

Offline evan_au

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Re: Could we construct a building that reached into space?
« Reply #4 on: 07/07/2012 12:53:36 »
Long, thin buildings under compression tend to crumple - they need lots of guy-wires.
The key to Arthur Clarke's hypothesised space elevator was to keep it in tension, by putting the center of mass at geostationary orbit. The building extends out well past 22000 miles/35000 km, and must be built out from geosynchronous orbit.

The tension is higher than we can sustain with today's materials, but it is mechanically more stable than a building which is under compression.

The reality check comes with launch costs, and powering the space elevator. 
 

Offline Bored chemist

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Re: Could we construct a building that reached into space?
« Reply #5 on: 08/07/2012 16:54:50 »
If you make them fatter at the bottom then they don't need guys ropes and they don't crumble.
Ask an ancient Egyptian for further design details.
 

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Re: Could we construct a building that reached into space?
« Reply #5 on: 08/07/2012 16:54:50 »

 

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