Master_Ghost_Knight
New Member
Why am I getting flack from ignorants for this?Netheralian said:Master_Ghost_Knight said:Coarse as in, Ignore the effects of earths gravity, ignore the efects of the centrifugal force, ignore elasticity, ignore that the cable must be locked in position, ignore cable thikness, ignore colapse via shearing stress
That's a pretty poor calculation if you are ignoring the main loading factors. Space elevators are feasible based on the theoretical strength of Carbon Nanotubes - although there are clearly still some practical issues to resolve (manufacture of sufficient nanotube length and cost effectiveness namely). And what collapse via shear stress are you refering too? The cable is under tension and is flexible. You seem to be under some massive misaprehensions about what a space elevator is based on your earlier posts.
The main loading factors is the cumulative column stress due to moons gravity, ignoring earths gravity isn't a farfetched aproximation (even because the claculations would lead to a virtualy higher loading factor), neither is to ignore the centrifugal force since the moon rotation is prety fucking low. Ignoring elasticity is a trivial thing to do since this sort of materials tend to break way before it stretches significatively enough to change the order of magnitude. Cable thickness is almost irelevant since the cables are relatively thin compared to the lenght (and so the divergent effect o gravity flow is almost null). The most significant factor that was excluded was the force requiered to keep the cable in place, I supressed that on purpouse so noone could say "hey nobody said that it need to be locked into place, or that must be done this way or that way". I supressed the sheering calculation becuse they are generaly lower and dn't fall to far (meaning that I am giving you the benefit for it to work). If I am the preform a rigurous calculation, it would take much more work than I am willing to put into it. I originaly taught that this couldn't be done and it would fall several orders of magnitude short compared to what would be requiered, but since everyone started to complain then I punched in some numbers and my rough calculation falled one order of magnitude shorter and so I conceded that it might be possible to do someway.
If you are willing to put your time into performing a more rigurous calculation I will not stop you. But the truth is nobody so far was even capable to preform such a thing. And my bet my ass that you can't do it either because you didn't even knew that cables could break due to sheering stress just by pulling them (only fragile materials tend to break due to normal stress, and that is where they get the definition of fragile).