Island A

>>>There would be much more architectural freedom to choose alternative
configurations of the tanks if they did not rotate. For example, seven
tanks could be arranged in hexagonal closest packing arrangement if that
were desired (just an example --- I don't know whether hexagonal closest
packing arrangement would be good or bad, but at least you'd be able to
consider it in a non-rotating design).>>>

In order to maximise habitation and work space, it would be most advantageous
is we could mould the tank material into a sphere. External tanks are long, thin
cylinders. This is a wasteful way of producing a pressure vessel. If you want to
maximise internal volume, you need a sphere.

An easy way to do this is to cut the ET's up and vacuum deposit the aluminium,
onto a thin (0.1mm) kevlar sphere. The biggest single advantage associated with
using a spherical facility, is the minimisation of a great deal of shielding
material. This is going to weigh thousands of tonnes in any event.

Tony

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