My current movie bugbear: Non-rotating with a large rotating section for the human habitat. Bonus points if the habitable part spans both the rotating and non-rotating portions and the crew can move freely between them.

It's an absurdly complex challenge to build it this way, it introduces an open set of failure modes that would not otherwise exist and there's no good reason for any of it that I can think of.

Instead, rotate the whole ship, and if there are a few things which for some reason must not be rotated (scopes, antennae and cameras, perhaps?) place them in the smallest and simplest possible unpressurised nonrotating segment at the axis.


Agreed. Stationary core and rotating ring is insanity.

Bridging the rotating/ non-rotating interface with power cables is difficult (slip rings or a Canfield Joint).
Bridging the interface with sewage lines is freaking impossible.

Just spin the entire ship already.


@nyrath Yep. The worst part is the atmospheric seals. One or multiple rotating rings that have to keep air in? Nutjobbery.

(2001: A Space Odyssey, unlike say The Martian or 2010, didn't have that problem: the rotating ring was fully enclosed within the pressure hull, which at least avoids that huge problem. Putting the toilets in the nonrotating portion solves the sewage issue as well, though they don't depict that.)

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