Thread: [AtE ish]
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Old 02-06-2017, 05:05 PM   #3
johndallman
Night Watchman
 
Join Date: Oct 2010
Location: Cambridge, UK
Default Re: [AtE ish]

The weight of the structure and gas bags at TL4 (or TL5) are just horrible. No aluminium, remember. Helium is really enthusiastic about leaking through what look like gas-tight materials, and the only solution at these TLs is thicker and heavier material.
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