mounstable rants concerning Instability of long cylinders

At 400 mph rotation with 1 G, I would be more concerned about human
balance conditions with the inner ear. Some sort of disorientation is
likely with that spinning.

Keep in mind that the 1 G is from rotation only, not from earth-moon-
sun gravitational influences.

Tidal effects would need to be dampened, or constructively used in a
stability system.

David

>
> > Here's what you do: you take your two twenty mile long, four mile
wide
> > cylinders...
> > Place the two cylinders end to end, about a mile apart. Then you
take
> > a one mile long cylinder (still four miles wide) and attach it
with
> > your magnetic bearings to the two cylinders.
>
> That's interesting. At 1 G, a cylinder with a 2 mile (3219 m)
radius
> needs to speen 0.528 RPM... which sounds slow, but in linear terms
it's
> about 178 m/sec (400 mph). That's pretty fast. You'll definitely
need
> some moving sidewalks to transition from one section to the other.
But
> rather than one slidewalk that speeds up and slows down, I'd suggest
80
> of them, each moving 5 mph faster or slower than the one next to it.
> Then you can have continuous traffic in both directions.
>
> I'm not sure whether such a system would be stable, however. Sure,
it