tag:blogger.com,1999:blog-8150340806781551727.post1719929650732197206..comments2024-03-29T07:43:40.648+00:00Comments on ToughSF: What's it made of? Part I: Locally available materialsMatter Beamhttp://www.blogger.com/profile/16721504049578296529noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-8150340806781551727.post-73463376785519235372018-05-01T14:05:13.746+01:002018-05-01T14:05:13.746+01:00wow, nice post,wow, nice post,Pupuk Buah Durianhttps://bit.ly/2GMd0DBnoreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-35461082328093318912017-07-22T06:38:22.598+01:002017-07-22T06:38:22.598+01:00Thanks for this wonderful post. Precision Drawell ...Thanks for this wonderful post. Precision Drawell ia leading manufacturer of <a href="http://precisiondrawell.com/category/steel-fibre/" rel="nofollow">Stainless Steel Fibre</a> in India.Anonymoushttps://www.blogger.com/profile/15276182619990846009noreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-33405634550649158442017-06-05T16:38:41.923+01:002017-06-05T16:38:41.923+01:00Quite right!
The simplicity of this design also o...Quite right!<br /><br />The simplicity of this design also opens up avenues for a plausible home-grown rocket. Using nothing more complex than an ice cube tray microgravity, the ice ship can be built as a collage of ice bubbles. Cover the bubbles in asteroid cement for insulation and fill then with water, then install a solar concentrator on one end, a habitat on the other, and you've got an asteroid hopper!<br /><br />The use of tension structures is the reason why I look at compressive or tensile strength in materials interchangeably. Matter Beamhttps://www.blogger.com/profile/16721504049578296529noreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-68070269668799184522017-06-05T16:34:28.098+01:002017-06-05T16:34:28.098+01:00Sorry, I was working on your 'launch them into...Sorry, I was working on your 'launch them into the asteroid belt' comment and assumed that this plastic production was for interplanetary trade purposes. In that case, Phobos has a tiny gravity well and deltaV penalty compared to Mars.Matter Beamhttps://www.blogger.com/profile/16721504049578296529noreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-12697933999568593192017-06-05T03:36:07.815+01:002017-06-05T03:36:07.815+01:00Given the economic incentives to build things as i...Given the economic incentives to build things as inexpensively as possible, I suspect Zuppuro's Ice ship concept will be quite common and even popular, with the only real difference from his reference design being the "bag" will be made out of some form of fibreglass spun from regolith or basalt. If you want more strength, the bag can be a complex 3d structure that fills the internal space with fibres to reinforce the ice. A layer of paper deposited aluminum on the outer surface of the filled bag to provide some insulation and protect against leakage and you have instant spaceship hull.<br /><br />Much of the engineering for future space structures may also be based on tension structures as well, for lightness and strengthThucydideshttps://www.blogger.com/profile/09828932214842106266noreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-1210575493322672132017-05-17T23:16:08.579+01:002017-05-17T23:16:08.579+01:00Good point.
Just thinking that Phobos might have ...Good point.<br /><br />Just thinking that Phobos might have CO2 ices, but CO2 on mars is just a high-pressure pump away-you don't even have to mine for the stuff-and you're going to be making Mylar and other lightweight plastics down there anyway for the colony's use, so why waste a plastics factory on Phobos?VIPMnoreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-49798534138831627512017-05-17T10:42:16.057+01:002017-05-17T10:42:16.057+01:00Why not simply make the Mosquitoes on Phobos? It h...Why not simply make the Mosquitoes on Phobos? It has all the resources Mars has, such as iron, oxygen, water and maybe even CO2 ices. Matter Beamhttps://www.blogger.com/profile/16721504049578296529noreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-83587882254719319772017-05-17T01:07:39.151+01:002017-05-17T01:07:39.151+01:00*surface, bah.*surface, bah.VIPMnoreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-11599586217031827772017-05-17T01:02:34.698+01:002017-05-17T01:02:34.698+01:00Could be instrumental to getting to Titan in the f...Could be instrumental to getting to Titan in the first place.<br /><br />Also, good place to manufacture Kuck Mosquitoes. Make Mylar down on the Martian service, ship it up to Phobos, make Mosquitoes, and launch them into the asteroid belt or at a comet with a stationary tether.VIPMnoreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-23411414237467191212017-05-14T10:06:34.088+01:002017-05-14T10:06:34.088+01:00Mylar is a good material. It would slightly diffic...Mylar is a good material. It would slightly difficult to find the elements needed to render the metallic layer inert, as there isn't a lot of fluorine lying around for Teflon, or chromium for stainless steel, but since it only needs to be a very thin layer, it might not be an insurmountable problem.<br /><br />If you are exporting products, something I will talk about in Part II, then Saturn's moon Titan is an excellent source of hydrocarbons. <br /><br />Producing plastics on Mars is energy-intensive and requires the use of valuable water. Taking hydrocarbons directly from Titan might end up being cheaper if the propulsion infrastructure is in place. Matter Beamhttps://www.blogger.com/profile/16721504049578296529noreply@blogger.comtag:blogger.com,1999:blog-8150340806781551727.post-10536870775071431012017-05-14T00:57:06.036+01:002017-05-14T00:57:06.036+01:00Mars could also make metallized Mylar film for var...Mars could also make metallized Mylar film for various purposes...volatile storage tanks, inflatable antennas and solar collectors, solar sails and whatnot.<br /><br />...Could export carbon based products to Mercury to make UHMWPE there, actually. Lots of energy there.VIPMnoreply@blogger.com