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/sci/ - Science & Math

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>> No.8823475 [View]
File: 408 KB, 1800x1350, davidpol_1455126242_nasa-trl.jpg [View same] [iqdb] [saucenao] [google]
8823475

>>8823399
You dense motherfucker. The paper here:
http://www.wseas.us/e-library/transactions/mathematics/2008/Ultra-long.pdf
Demonstrated that flexible cables, often referred to as tether, are unstable.

Now after the ring is built it may be stable*, but when we are actually building the ring, that is unspooling some flexible whatsit around the earth, it will most certainly not be stable.

We can't just magically *POOF* the ring into existence.

*only proven for small perturbations for the case we could actually build


Now if you really want to make something like this possible then do some goddamn analysis on and publish about it. It'll be far more effective than making youtube videos and posting on 4chan. Hell, even a simple analysis with MODERN MUHTERIALS would probably be enough to publish in AIAA.

Of course, if you really want it to work do some goddamn analysis on the dynamics of these things. Make some nice and pretty simulations that show it's stable and transient effects don't destroy it. You have huge amounts of computing power available at your fimgertips.

Or if you suck dick at math, go build a small scale test version of one of these things.

There's shit that needs to be done before we can even consider building these things and you can do it

>> No.8330625 [View]
File: 447 KB, 1800x1350, nasa-trl.jpg [View same] [iqdb] [saucenao] [google]
8330625

>>8330558
They proved the basic technology for large rockets. They do not need to prove it again. Once the basics of a technology are proven, private companies can take care of making it more efficient. They should be developing tech from TRL 1 to TRL 9 rather than just reusing a bunch of TRL 9 tech.

At least that is what's supposed to happen.

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