No more costly than big pieces of aerogel and, since NASA's acceptance standards are so high there has to be some around that failed quality checks....
On Sat, Nov 27, 2010 at 6:30 PM, J. Forster <j...@quik.com> wrote: > You could probably buy enough pink fiberglass to insulate a house for what > one of those cost. They might even cost more on eBay > > -John > > =============== > > > > How about surplus HRSI tiles off the Shuttle? > > > > > > > > On Sat, Nov 27, 2010 at 1:47 PM, Poul-Henning Kamp > > <p...@phk.freebsd.dk>wrote: > > > >> In message > >> <05fb5f7f819d035fdc8556f9b4842b98.squir...@webmail.sonic.net>, > >> "Rick > >> Karlquist" writes: > >> > >> >The general consensus was that > >> >all foams were more or less similar thermally, > >> > >> There is indeed very little difference, in particular if the foam > >> is encapsulated so the open/closed bubble difference is eliminated. > >> > >> These days aerogel is the big thing, and Aspen Aerogel's "spaceloft" > >> series of products are seeing a lot of use in tight spaces. > >> > >> It is also possible to buy aerogel as granulate, for instance from > >> United Nuclear, but be aware that it will draw moisture like there > >> is no water tomorrow, so always use gloves and a respiratory filter. > >> > >> I'm not sure the mechanical strength of aerogel would be any use > >> for military OCXO's[1], but for lab-settings, it would work fine. > >> > >> Poul-Henning > >> > >> [1] People tend to forget that aerogel is one of the strongest > >> materials *relative to its weight*, and at the same time the > >> solid with the lowest density. The first thing people do on > >> picking up a piece of aerogel is typically to crush it. > >> > >> -- > >> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > >> p...@freebsd.org | TCP/IP since RFC 956 > >> FreeBSD committer | BSD since 4.3-tahoe > >> Never attribute to malice what can adequately be explained by > >> incompetence. > >> > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
