[AR] Re: GPS question for the group...

  • From: "Monroe L. King Jr." <monroe@xxxxxxxxxxxxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Mon, 28 Dec 2015 03:00:50 -0700

Try one on a solid that hits 30g it wont work.

They may have upped it in the last 2 years though that was my
experience.

-------- Original Message --------
Subject: [AR] Re: GPS question for the group...
From: qbert@xxxxxxxxxxxxxxx
Date: Mon, December 28, 2015 2:33 am
To: arocket@xxxxxxxxxxxxx


Monroe

You missed the part in there that says,

ENVIRONMENTAL
Temperature Operating -40°C to +85°C
Storage -40°C to +95°C
Humidity 95% non-condensing
Vibration (operating)
Random MIL-STD 810G (7.7 g RMS)
Sinusoidal IEC 60068-2-6 (5 g)
High Vibration Option MIL-STD 810G (20 g RMS)
Acceleration (operating) MIL-STD 810G, Method 513.6
Procedure II (16 g)
Bump ISO 9022-31-06 (25 g)
Shock
Operating MIL-STD 810G (40 g)
Survival (75 g)

which sort of does fix the problem depending on what standard you want to use.

Robert

At 10:21 PM 12/27/2015, you wrote:
That wont solve issue #2 > -------- Original
Message -------- > Subject: [AR] Re: GPS
question for the group... > From: Ben Brockert
<wikkit@xxxxxxxxx> > Date: Sun, December 27,
2015 9:57 pm > To: "arocket@xxxxxxxxxxxxx"
<arocket@xxxxxxxxxxxxx> > > > Been part of
getting a Novatel receiver without COCOM, it's
just a form > promising not to export and an
extra $1k. No government contract needed. > Can
even take the limit off an existing installed
unit, since it's just a > software update. > >
On Sunday, December 27, 2015, Paul Breed
<paul@xxxxxxxxxx> wrote: > > > This is going to
be a 2 to 10K GPS reciever. > > > > Its also
going to be difficult to get one without COCOM
limits without a > > government
contract. > > > > Paul > > > > On Sun, Dec 27,
2015 at 8:01 PM, David Gregory
<david.c.gregory@xxxxxxxxx > >
<javascript:_e(%7B%7D,'cvml','david.c.gregory@xxxxxxxxx');>>
wrote: > > > >> I'm guessing you've already
looked into novatel. What do they
run? > >> This guy is 16g operating on the spec
sheet. > >> > >>
http://www.novatel.com/assets/Documents/Papers/OEM638-PS-D17916.pdf
On Dec 27, 2015, at 1:45 PM, Paul
Breed <paul@xxxxxxxxxx > >>
<javascript:_e(%7B%7D,'cvml','paul@xxxxxxxxxx');>>
wrote: > >> > > >> > There are two GPS limits
that matter. > >> > > >> > 1)The COCOM limits
that limit altitude and speed.... > >> > > >> >
2)The acceleration limits that cause the GPS to
loose lock. > >> > > >> > > >> > What GPS
modules and types have been shown to work
reliably during > >> boost for accelerations > 6
to 10 g in the HPR community. > >> > I'm looking
for modules that don't exhibit problem #2, as
problem #1 is > >> a political problem that
might be solved if the basic > >> > underlying
technology does #2 well.... > >> > > >> > > >> >
has anyone flown the really tiny Venus GPS
modules on a rocket? > >> > > >> > > >> >
Paul > >> > > >> > > >> > > >> > >> > >

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