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The in-development Prime launcher from Orbex has an uncommon arrangement: One key aspect of propane is that it remains liquid at cryogenic temperatures. That enabled a “coaxial tank” design for Prime where a central tube of propane is surrounded by an outer tank of liquid oxygen, creating structural mass savings in the rocket. (From Space News ) Others ...


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Absent specific details about the printing filament, it's impossible to say anything in particular about this application. Some general points of knowledge though: The primary sources of polymer degradation in orbit are UV radiation, atomic oxygen (AO) erosion, outgassing, and thermal degradation. These all present challenges regarding material selection, ...


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