This section of an aerostat gondola aerospace structure, was made using the conformal lattice structures additive technology invented by Paramount, a 3D Systems company. The technology, which uses selective layer sintering, was developed in collaboration with Georgia Tech as a design software tool for engineering CAD systems. The initial focus was on unmanned aerial vehicles and unmanned aircraft systems, where high strength-to-weight materials and processes are critical. The strength-to-weight ratio is higher than that of comparable solid materials, due partly to the engineering optimization of cellular-type structures by means of automated population of complex geometry. Unit cells are aligned along force directions, and the structure aligns to the load plane, producing predictable loads and test patterns. (Source: Paramount)
Just had a look on this story for one I'm writing now about a 3D-printed lunar base...this is pretty amazing and I'm continuously impressed by what NASA and space scientists are devising. Just the idea of being a space scientist in and of itself is quite cool! I do hope NASA can pull some of this stuff off despite its financial woes. I suppose the influx of commercial influence and funds will help. Perhaps it's a bit frivolous and not necessarily for the benefit of mankind in general to have such high space aspriations, but I like it anyway. :)
Rob_Krebs, glad you're enjoying the slideshow. I think that's a good point about what CAD designs to bring and transmitting the files you forgot by wireless comms. LCA and environmental impacts in space? We don't seem to have done much on that end yet, considering how much space junk we've left out there. Thanks--your points are well taken, although first we've got to actually build some of these things.
Thank you Anne Thryt for this amazing article. Brilliant, of course this is the enventuality of 3-D printing. (Dope slap to myself) If you were going to Mars and had a 3-D printer what plans would you bring to print? Trick question: They will send you all the plans you need via CAD files on the earth net!!! Do environmental impacts (LCA) of buildings in the future now have to consider impacts of the building on the universe!? ;-} More at http://www.greenbuildingsolutions.org
William, that's Contour Crafting making buildings with dirt and similar materials. And here's another AM manufacturer that wants to make buildings with a 3D printer, called D-Shape: http://www.d-shape.com/cose.htm
A 3D printer that could use soil or "dirt" would be more amazing than the basic concept of a 3D printer! FRom the descriptions of how the various ones work, it is a challenge to imagine using dirt as a feedstock. So if any details on that sort of system become available they would be real news.
Yes, Ann; you and I have discussed several times previously the history of Rapid Proto methods, especially going way back to 3D Systems' first SLAs in the late 1980's. But I am new to SLS prototyping (just this year) and have been Very Impressed with this material's robustness as a prototype; you can get parts just as fast as conventional SLA, but the material properties are astoundingly better. I still have a lot to learn about them, but as I discovered, this SLS is TOUGH STUFF!
William, I think those are very good points: power and material sources. However, in the case of Contour Crafting, it's designed to use naturally occurring materials, such as various forms of soil. The power concerns, however, remain.
Shades of Star Trek and the ever present replicators, that usually produced food ready to eat. I do have some concerns about where the feed material, with it's fairly demanding characteristics, comes from. Of course, native soil on the moon and on Mars may have properties that make it suitable for the process, but they might not. And draqgging along the raw materials will be as heavy as bringing finished parts. MY other concern is about where the energy to fuse the powder into objects will come from. Deveoping enough heat to fuse materials does take a fair amount of heat.and that power needs to come from some place. So the additive manufacturing machine in space has some real challenges ahead for it. On earth, of course, the situation is totally different, except the question of where the materials come from is still to be answered. Possibly some version that uses course feedstock will be invented.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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