Kalpana one

At 07:15 PM 4/28/2006, you wrote:
>Al Globus wrote:
>
> >To avoid using 1g area for agriculture. The size of the 1g area drives the
> >surface area, which drives the shielding, which drives the mass
> >requirements, which is probably the tallest pole.
> >
>Hmm. Interesting point. Instead of using spherical endcaps which don't
>have very usable surfaces, you could theoretically consider having
>conical endcaps. Cone shapes are reasonably easy pressure vessels to
>manufacture.

The end caps need to be pretty blunt to avoid axis of rotation
instability. Both spherical and conical end caps are too long, to my
mind. For Kalpana One we felt that there should be a curved transition
from the side to nearly flat end caps. The exact details are TBD.