Quote from: Blackjax on 02/25/2012 11:53 amQuote from: Jim on 02/25/2012 12:35 amQuote from: Blackjax on 02/25/2012 12:24 amQuote from: JimMost if not all cubesats are flying on gov't missionsOK, and your source for that is?It is obvious. When is the next commercial launch in the US? Dunno, do you know a good source for missions across all launchers including the little ones like UP Aerospace? I'm not sure why you're asking about US launchers though, because unless I misunderstand, Cubesats are used outside the US as well and if so might be going up on non-US flights. This kinda implies that not only is this being attempted, it is being attempted outside the government.Denpr is a military rocket, same goes for Shitl. PSLV is govt
Quote from: Jim on 02/25/2012 12:35 amQuote from: Blackjax on 02/25/2012 12:24 amQuote from: JimMost if not all cubesats are flying on gov't missionsOK, and your source for that is?It is obvious. When is the next commercial launch in the US? Dunno, do you know a good source for missions across all launchers including the little ones like UP Aerospace? I'm not sure why you're asking about US launchers though, because unless I misunderstand, Cubesats are used outside the US as well and if so might be going up on non-US flights. This kinda implies that not only is this being attempted, it is being attempted outside the government.
Quote from: Blackjax on 02/25/2012 12:24 amQuote from: JimMost if not all cubesats are flying on gov't missionsOK, and your source for that is?It is obvious. When is the next commercial launch in the US?
Quote from: JimMost if not all cubesats are flying on gov't missionsOK, and your source for that is?
Most if not all cubesats are flying on gov't missions
What about FPGAs then?http://www.brianhpratt.net/cms/index.php?page=fpgas-in-spaceFPGAs have often been used as test/design platforms for development purposes, including development of SoCs.But perhaps their flexible reconfigurability makes them directly advantageous for use in space, since if some element gets damaged by cosmic rays, then you can reconfigure the system to use other elements.
There are also radiation-hardened FPGAs. And if you have a non-hardened FPGA, there are rather well-established methods to add redundancy to an existing design (not a perfect solution). But the nice thing is that you can pretty easily go from a standard, relatively cheap FPGAs to more expencive rad-hardened FPGAs if the environment demands it.
Quote from: Robotbeat on 02/27/2012 11:25 pmThere are also radiation-hardened FPGAs. And if you have a non-hardened FPGA, there are rather well-established methods to add redundancy to an existing design (not a perfect solution). But the nice thing is that you can pretty easily go from a standard, relatively cheap FPGAs to more expencive rad-hardened FPGAs if the environment demands it.Yeah, that's what I was thinking.Jim was pointing out that rad-hardened chips are naturally more expensive, because they're limited production runs on specific chips. But since FPGAs are multi-purpose, and re-purposable in all sorts of different ways, then they could be produced in greater volume.