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Old 08-11-2016, 07:10 PM
Dr. Strangelove Dr. Strangelove is online now
Join Date: Dec 2010
Posts: 6,315
The outer diameter of SkyLab was 6.6 m, as compared to ~4.5 m for most ISS modules, but it's pretty clear that a huge fraction of the ISS volume is taken by non-habitable space, whereas much of SkyLab (in particular, the ring shown above) gets almost the full diameter. Wouldn't surprise me if the effective diameters were something like 2 m vs. 6 m. That factor of 9 makes up for a lot of missing length.