[psas-avionics] Extended Temp Flight Computer Unavailable
After bouncing back and forth with the advantech sales rep, it turns out that the extended temp range flight computer board is not cleared for the US yet. On top of that, it has a 12 week lead time even if it were cleared. The notes at the bottom of the FC search page indicate that we were going to fall back to the normal temp range board, 0C-60C. With that in mind, I'm planning on placing the order tomorrow. Please voice any comments/concerns/questions ASAP, otherwise I'll plan on ordering tomorrow... Thanks, -Dave ___ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
Re: [psas-avionics] Extended Temp Flight Computer Unavailable
On Mon, Sep 5, 2011 at 9:53 AM, Dave Camarillo wrote: > After bouncing back and forth with the advantech sales rep, it turns > out that the extended temp range flight computer board is not cleared > for the US yet. On top of that, it has a 12 week lead time even if it > were cleared. The notes at the bottom of the FC search page indicate > that we were going to fall back to the normal temp range board, > 0C-60C. > > With that in mind, I'm planning on placing the order tomorrow. Please > voice any comments/concerns/questions ASAP, otherwise I'll plan on > ordering tomorrow... > Did the representative have information on the specific differences between the high temp version and the normal temp version? Thanks, -K > ___ > psas-avionics mailing list > psas-avionics@lists.psas.pdx.edu > http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics > ___ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
Re: [psas-avionics] Extended Temp Flight Computer Unavailable
On Mon, 5 Sep 2011 09:53:45 -0700, Dave Camarillo wrote: > After bouncing back and forth with the advantech sales rep, it turns > out that the extended temp range flight computer board is not cleared > for the US yet. On top of that, it has a 12 week lead time even if it > were cleared. The notes at the bottom of the FC search page indicate > that we were going to fall back to the normal temp range board, > 0C-60C. That should be perfectly fine; I've never seen an e-bay go above 50C, even in the dead of summer (like Kansas this weekend where mid-day temps were around 42. And, I hope no-one wants to be out flying rockets below 0C. Yes, I know, it gets cold up there, but we're not in the air long enough for it to matter. -- keith.pack...@intel.com pgpxJOgPsNdx8.pgp Description: PGP signature ___ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
Re: [psas-avionics] Extended Temp Flight Computer Unavailable
> That should be perfectly fine; I've never seen an e-bay go above 50C, > even in the dead of summer (like Kansas this weekend where mid-day temps > were around 42. > Agreed. Also, keep in mind that 60C is not the max temperature of the electronics, but the max temperature of the ambient environment that the electronics are operating in. We can fairly trivially sink a heat spreader to the outside frame of the rocket, which will be well under 40 C in the US. > And, I hope no-one wants to be out flying rockets below 0C. > > There are pictures on the wiki of you and Andrew attempting this in Milican... :) > -- > keith.pack...@intel.com > > ___ > psas-avionics mailing list > psas-avionics@lists.psas.pdx.edu > http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics > > ___ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
Re: [psas-avionics] Extended Temp Flight Computer Unavailable
He didn't, it's usually just swapping components out for variants rated over a wider temp range and changing how thermal dissipation is done, perhaps larger heat sinks or something similar. In particular, it has to pass their internal thermal tests. It's a brand new board so it doesn't suprise me that they are not ready for full production of the extended temp range version On Mon, Sep 5, 2011 at 10:16 AM, K Wilson wrote: > > On Mon, Sep 5, 2011 at 9:53 AM, Dave Camarillo > wrote: >> >> After bouncing back and forth with the advantech sales rep, it turns >> out that the extended temp range flight computer board is not cleared >> for the US yet. On top of that, it has a 12 week lead time even if it >> were cleared. The notes at the bottom of the FC search page indicate >> that we were going to fall back to the normal temp range board, >> 0C-60C. >> >> With that in mind, I'm planning on placing the order tomorrow. Please >> voice any comments/concerns/questions ASAP, otherwise I'll plan on >> ordering tomorrow... > > > Did the representative have information on the specific differences between > the high > temp version and the normal temp version? > Thanks, > -K > >> >> ___ >> psas-avionics mailing list >> psas-avionics@lists.psas.pdx.edu >> http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics > > ___ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
Re: [psas-avionics] Extended Temp Flight Computer Unavailable
Ok, so it doesn't sound like there are particular concerns over the 0-60, so I will proceed with ordering tomorrow thanks guys! later, -dave On Mon, Sep 5, 2011 at 10:48 AM, Daniel Kirkpatrick wrote: > >> That should be perfectly fine; I've never seen an e-bay go above 50C, >> even in the dead of summer (like Kansas this weekend where mid-day temps >> were around 42. > > Agreed. Also, keep in mind that 60C is not the max temperature of the > electronics, but the max temperature of the ambient environment that the > electronics are operating in. We can fairly trivially sink a heat spreader > to the outside frame of the rocket, which will be well under 40 C in the US. > >> >> And, I hope no-one wants to be out flying rockets below 0C. >> > There are pictures on the wiki of you and Andrew attempting this in > Milican... :) > >> >> -- >> keith.pack...@intel.com >> >> ___ >> psas-avionics mailing list >> psas-avionics@lists.psas.pdx.edu >> http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics >> > > > ___ > psas-avionics mailing list > psas-avionics@lists.psas.pdx.edu > http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics > > ___ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
Re: [psas-avionics] Extended Temp Flight Computer Unavailable
> There are pictures on the wiki of you and Andrew attempting this in > Milican... :) Hey, now, let's get our facts straight - the high temperature was *5* deg C out at Milican in February 2005, not 0 deg C. Well, OK, that was the high that day anyway. I think we're all OK with the tighter range. Andrew -- --- Andrew Greenberg Portland State Aerospace Society (http://psas.pdx.edu/) and...@psas.pdx.edu P: 503.788.1343 C: 503.708.7711 --- ___ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
