/sci/ - Science & Math

Haha, can't wait to see how this one pans out.

it would need to be quite a large elevator to be efficient for space colonization

I think its brilliant!

>>1392477
lets say.... as big as an apartment... but regardless of the size, it could work in theory correct?

>>1392467
Yeah no.

Moon's orbit isn't perfectly circular. You're ideas gonna be good until the weight smashes in to downtown L.A.

Actually on second thought this is a brilliant idea OP.

you do not need the weight attached to the rope
the rope's weight would be ok

Are you a wizard.dll

>>1392492

so we could actually do it? why dont we?

>>1392487
don't just dismiss it you elitist fuck, at least address why it wouldn't work!

>>1392467
Why not just tie the rope down on earth side as well...

how do we load things onto the elevator? how do we load things off of the elevator?

>>1392488
than make the fucking rope shorter!

the earth rotates quite a bit faster than the moon orbits it

>>1392507
it would wrap around the earth since the moon goes around the earth

>>1392508
Fucking bigass helicopters

>10. Run into some miserable planet thats all blue and makes you want to puke, planet is inhabited by blue cat like things.
>11. Release information that this planet is now furry paradise
>12. Send all furry loving people there
>13. Once all furrys have landed on planet, NUKE IT

indeed, please just send the attached .jpg to nasa

http://en.wikipedia.org/wiki/Space_elevator

>>1392519
well shit...

>>1392519
Nobodies thought of connecting it to the moon though... why not use that as the counter weight

>>1392546
Different rotation/orbit speeds.

>>1392550
who says it needs to be constantly in one place on earth. Let it rotate around the earth and fly shit to it

>>1392467
What do you make the rope out of? Also have you calculated the strength of the rope you'd need? Have you taken gravitational and centrifugal forces into account?
Didn't think so, come back when you take then into account.

The 'rope' would need to have a central column of something like ultra-high-purity carbon nanotubes, with virtually no flaws. Around it, you'd need sections of smaller ropes that wouldn't do the load-bearing of the central column, but would have loads running up and down their lengths. Not all that useful to attach it to the moon, because of the aforementioned faster orbit speed than the Earth's rotation, and that it's distance from Earth isn't constant.

>>1392554
Wont have to deal with atmospheric drag. Much shorter cable.

>>1392561
High-purity carbon nanotubes, with very few flaws in it's structure.

>>1392572
good point... where do we get the anchor than?

>>1392574
Excellent now where do we get those? HMMMMM... why don't we roll up big sheets of graphene, sorta like some sorta carbon nanodoobie.

why do we need such fancy shmancy rope... lets just use thick metal wire and have a smaller elevator

>>1392581
Launch it from earth. It doesnt have to be all that massive. Could make it a space station or something. The launch costs of getting it up there would be negligible compared to the rest of the elevator.

>>1392466

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>>1392606
Because the rope has to support its weight in tension.

Ignoring the tension from the weight of the elevator/rope (assume it is weightless), the rope would still experience tremendous tidal forces from relativistic effects.

zomg guys I got it.

run a strong power cord from the moon to the earths upper atmosphere and run some big wind turbines on it. the power generated will be transferred back to the moon though the cord and can be used for some kind of mining operation or something.

>>1392594

We'd need to make lengths of carbon nanotubes hundreds of metres or kilometres in length, then wind them up, and have 'stations' up the length where broken/failing strands of the coiled nanotube 'rope' can be replaced without detaching the entire structure.

>>1392645
EXACTLY!

>strong rope
>never gonna happen


not with nanotubes, not with nanocomposites, not with anything.


sorry kids, but "even if..."

nope.

even if:

we could make macroscopically long nanotubes

we could make concentrically layered nanotubes (a single, multiwalled nanotube, many many (avogadro's number) layers overlapping)

we could make perfect BN (boron nitride) nanotubes like the above

we could avoid any damage during materials processing of anything stated above, or any other nanomaterial combined into a composite or other macroscopic structural material (like oxidation, physical damage to the crystal structure, defects from impurities, etc)

we could physically arrange the device in the manner of OP's fantasy (eg "from the moon to the earth" or "from geosync orbit" or "standing on the earth into orbit")

we could compensate for coriolis and centripetal and centrifugal forces trying to rip the thing apart

we could protect it from terrorism or accidents or natural disasters
it would not help us because the moon AND space are worthless for colonization.


there is no point.

this was in a documentary like 7 years ago

>>1392672
get the fuck out

>>1392672
except that its awesome

Some people say why but I say why not!

>>1392672
Instead of just saying "no", be productive and tell us what the tension on the rope will be at every point, since you've obviously worked it all out.

You're doing it wrong. Anchor the rope to the Earth and then to a space station.

actually

http://en.wikipedia.org/wiki/Space_elevator

>>1392704
Because the moon doesn't orbit the earth or anything...

>>1392704
earth is a bigger gravitational well is bigger it would fall easier

>>1392465

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why is this faggot nut building a space elevator instead his fucking crap?????

>>1392672
idiot
it could be monetized through TV satellites, also of course the spaceelevator should not look like OP suggested but rather like wikipedia article (100000 km from earth only, half distance to moon)

What happened to the space canon? I remember reading about some crazy huge accelerator canon that was theorized as a potential tool for getting shit into space without rockets. Anyone else here about that?

I wonder how the rope will mess with the magnetosphere like what if it switches the pole to where the rope is

>>1392672

>the moon AND space are worthless for colonization.

You lost me.

>>1392728
wont its orbit decay and fall towards the earth especially with a heavy load in the elevator

The moon is 300,000 miles away. That's the lifespan of a reliable car.

You are a retard.

>>1392731
Just make it non conductive and there won't be any issues.

>>1392741
you dont have to have the elevator go clear to the moon just out of earths gravity

rope would be unstable and prone to oscillation

atmospheric drag on rope/weight would be high. Lots of heating, would have to make it out of strong heat resistant material

you would have to fly at massive supersonic speed to 'rendezvous' with the rope.

Rope would probably not be strong enough to support the amount of force on it. Don't think we currently have the technology to make a 200,000 mile long rope that can hold its own weight (let alone an extra weight)

>>1392699
Because that's how tension works. It acts along the entire length of the object being stretched.

>>1392466

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>>1392749
but it wont have its entire weight since most of it will be weightless in space and the moon will be a counter weight (a little) oscillation could break the super strong rope, maybe have some mechanism that measures the frequency of oscillation and do an create an equel and opposite frequency to cancel it out

>>1392740

an elevator to a geosynchronous station (not the moon) would work, angular momentum would be preserved because every trip up would be paired with a trip down. there would be a net orbit decay from mass brought up and not brought back down but nothing that sending up small amounts of fuel when needed wouldn't fix.

>>1392780
alright, that makes sense!

>>1392774
what about the atmospheric drag and the hypersonic speeds required to dock with it?

>>1392806
I guess its no longer attached to the moon but more like this picture, with some anchor
>>1392546

Bump for /int/ making this shit happen so I can finally fulfill my dream of becoming cowboy cosmonaut

>>1392465
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>>1392464

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>>1392774
It's still being spun about as though on a centre. It's weight is still being sent out by centripetal force, putting the entire thing under tension.

Sure is summerfag in here.

>>1392851
your summer fag

>>1392780
If you have the anchor just past GSO, you can just have the system leech the angular momentum from the earth.

>>1392877
no u

Just shoot the shit up into space with lasers

>>1392463
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ITT: people who don't know the difference between than and then, as well as its and it's.

>>1392928
eat a dick grammar police

>>1392940
Eat mine.

>>1392953

ggggggggggaaaaaaaaa

>>1392763 missing the point.
But what IS that tension? You're so sure no technology will ever exist that can bear the stresses. So tell us what the tension in Newtons of the rope will be?