Posted by Per Corell on February 17, 2003 at 07:40:36:
In Reply to: Re: Structural Ceramics - Key to Terror-Resistant Skyscrapers? posted by Gary R on February 17, 2003 at 04:47:34:
I am quite sure we will se some very resistant materials in the future, beside those already here as the Ceramics materials , my problem occour when thinking extruted materials ; --- I simply can not get this to fit with the basic idear with 3D-H, that "the material" is a sheet material that is cur "2D" , with water or laser cutter to form an assembly frame. I don't doubt that Ceramics will perform well made in space esp. produced there, but maby I am to bound in old boatbuilder habits to se how a material that I guess in princip are melted and "cast" into shape, can work in a "low tech" method as 3D-H acturly is. ( compared ).
Still a few details ; ------ one tube within another make two hollow spaces and only the outside one need to be water filled ; the inner core will then lead away the steam internal in the structure.
"Glassed" and with a fluid or gas to remove the heat ,Ceramics already work fine esp. with the top quality coating we shuld expect with modern materials -------- now I better stop before I describe a cooling system for a space craft, made as a fraktal shaped 3D-H , working mechanics into design, Weight anyway will make a shutdown for all dreams even you circulate hallon's , even manufactoring acturly allow spacecraft's made in Titanium , Romans alway's will produce these in epoxies ;))
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