Hey Veeky Forums are space elevators possible?

Is Elon Musk right when he says space elevators are impractical?

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youtube.com/watch?v=dc8_AuzeYKE
en.wikipedia.org/wiki/Space_elevator#Extraterrestrial_elevators
newscientist.com/article/2093356-carbon-nanotubes-too-weak-to-get-a-space-elevator-off-the-ground/
twitter.com/SFWRedditImages

Hes right, for now.

Not on Earth, no. On other planets with less gravity it is a possibility.

What are the constraints?
What is the best bet? Reusable Rockets? Space planes? Mass Drivers?

tensile strength of the tether is one limiting factor. on the moon you could make a space elevator with a kevlar tether, here on earth you'd need something with "nano" in the name

Checked.
Do you think we missed window of opportunity for exploration by both abandoning Apollo and rejecting SDI

bump

>you know space elevators counter the interests of BIG ROCKET

My personal favorite.

Expensive, difficult, and limited. Sort of counterproductive if you want cheap and easy access to space. Space elevators are essentially scifi wank like the floating castles in fantasy but close enough to the average person's life experience to seem realistic and futuresque.
Guns and rockets are boring 50's stuff no way are we gonna use those in the future.

I don't like this meme format. It just looks like she's unimpressed with the first one and doubtful about the second one. It's like a shitty version of that Drake meme.

A Lunar elevator is impossible.
The moon rotates 28 times slower. So the centrifugal force which keeps the cable taut is 784 times weaker. There's less gravity on the moon, but not 784 times less! The line would have to extend far, far past the Earth.

A Martian elevator could be built with current materials. Have to move Phobos and Deimos out of the way though -- or raise one into position to serve as the counterweight.

>tfw you had a highschool physics teacher for a year who used an earth gravity of 10 for calculations

>i lik speec elaveter becos nanotubs

But that's right.
Acceleration at the Earth's surface is 0.982 Standard Gravities.
(Give or take, depending on location.)

The space fountain is far superior

On Earth you need something with "magic" in the name.

Rockets are the best technology that will ever be developed. This is due to the fact that fuel can be manufactured via biomass (biomethane) and because they are the most efficient means physically possible.

Isaac got your covered

youtube.com/watch?v=dc8_AuzeYKE

>What is the best bet? Reusable Rockets? Space planes? Mass Drivers?

>Reusable Rockets
Good for transporting cargo into orbit.

>Space planes
Good for public/private transportation into LEO

>Mass Drivers
Good for weapons and launching cargo and low-gravity colonies.

Forget space elevators and sign up for my space rollercoaster theory.
Basically take a pipe, about 50 km in length and turn it into a railgun pointing at the sky. Not instantly horizontally but with a gradual curvature. Lead it up Mount Everest and shoot cargo into orbit.
Please rate.

Reaching 11 km/sec in 50 km means 121 gees of acceleration.
Plus the centrifugal force during that curve up the side of Mt Everest.
Plus air resistance as you emerge from the tube.

Thank you, but "no".

That accent is pretty cool

It's actually rhotacism, issue with pronouncing the letter R. Not nearly as present in his newer videos as it was in his older ones though.

it's actually whotacism issue with pwonouncing the lettew aww. Not Neawly as Pwesent in his newew videos as it was in his oldew ones though

Wrong, you are not calculating an insertion into orbit from the tibetan plateau, but an assisted launch, for starting anyway.

Make it a 200km long vacuum railgun that shoots Eastward- ESE. Use solid rocket booster assists if necessary. Much cheaper long term (hundreds of launches) compared to normal rockets form sea level.

It would probably be better to build one in Papua New Guinea or Kilimanjaro.

"Vertical maglev rocket launch system, China

Published on Sep 8, 2016

Proposal for Chinese maglev rocket launch system, from the Himalayan Mountains. "

https: //issuu.com/jeremybatterson/docs/roofofworldpdf

It is also a plot device in "the moon is a harsh mistress" by the immortal Heinlein.

Launch loops and orbital rings have all the benefits of space elevators but are possible with modern materials.

> Hey Veeky Forums are space elevators possible?
Short answer: No.

Long answer: There are no material avaliable on earth that can withstand the stresses & forces in such structure.

Graphene was theoretically proposed building material, since it's super strong, but we don't know how to manufacture it in big sizes.
However even graphene may not be strong enough.

There are no other known building materials stronger than graphene (which still too weak to be used)

>Long answer: There are no material avaliable on earth that can withstand the stresses & forces in such structure.
on earth...
but on the moon a space elevator is perfectly feasible with the materials we have today, maybe on mars too

This, on earth you would a single strand of graphine would just barely be enough to make a space elevator. While you could make one on the moon out of steel.

no there was a new variaton of graphene that could be strong enough to tether mars to jupiter or something like that

Source?

The moon is in tidal lock. You could put the cable on the other side of the moon and it wouldn’t go near the Earth.

Why would you want to build huge slow ass space elevator on the moon instead of the considerably more useful mass drivers? That's ridiculous.

>A Lunar elevator is impossible
Not according to wikipedia.
en.wikipedia.org/wiki/Space_elevator#Extraterrestrial_elevators

I'll have a drumstick!

What is "bigger counterweight?"

Carbon tubes and the issue raised by one atom being out of place.

newscientist.com/article/2093356-carbon-nanotubes-too-weak-to-get-a-space-elevator-off-the-ground/

Forget everything else and focus on alcubierre drive
find out how to produce and store anti matter and negative energy

"oawth"

>but on the moon a space elevator is perfectly feasible
Nice idea. Let's make it on moon.

>but on the moon a space elevator is perfectly feasible
Nice idea. Let's make it on moon. .

>
>The moon is in tidal lock. You could put the cable on the other side of the moon and it wouldn’t go near the Earth.

The moon is in tidal lock.

"Makes you think" intensifies

for high school that's good enough

Any word on the viability of Lofstrom Loops? plz

These things would be much safer and better to produce in space, where there's solar energy to spare.