Hi all,
what about the following link?
http://www.nrel.gov/features/20100708_battery.html
73s
Fabio
IW8QKU/5
*Subject: [amsat-bb] ARISSat-1 battery
From: g0mrf@xxx
Date: Mon, 29 Aug 2011 08:50:45 -0400 (EDT)
Hi all.
The ARISSat team seem to have reached the conclusion that the Silver
Hi,
here is another interesting link:
http://www.nrel.gov/vehiclesandfuels/energystorage/news/2011/1482.html
could it be an interesting opportunity for our birds ?
73s
Fabio
IW8QKU/5
On Mon, Aug 29, 2011 at 3:09 PM, Fabio Azzarello iw8...@amsat.org wrote:
Hi all,
what about the following
Kind of a 2011 version of AO-7, but without the stable orbit!
73, Jim KQ6EA
On 08/14/2011 10:18 PM, Anthony Monteiro wrote:
Dear Friends,
This is speculation but it looks to me like we
have had a bit of good luck regarding the battery.
Looking at the battery voltage from deployment on...
On 8/11/11 8:46 PM, Gould Smith wrote:
Kenneth Ransom, N5VHO has plotted the battery min/max for the last 8 days. We
see that the battery voltage is decreasing at a faster rate than expected.
Kenneth's graph can be found on the arissat1.org site under FAQ
Disclaimer: what follows is entirely my own personal opinion, not
necessarily that of the ARISSat-1 team or anyone else. I might be
missing information that would affect my analysis.
Ken's plot is extremely valuable. It strongly suggests battery failure,
not a negative power budget as Tony,
On 8/13/11 6:11 PM, Dave Guimont wrote:
How about you designing circuitry/program to charge cells individually
rather than the battery. Or has that been tried??
That's a great idea; I wish I thought of it first, but it was Lou
McFadden W5DID who published a paper at the AMSAT Symposium a few
, August 13, 2011 6:11 PM
To: Phil Karn
Cc: amsat-bb@amsat.org
Subject: [amsat-bb] Re: ARISSat-1 battery eclipse voltage decreasing
Disclaimer: what follows is entirely my own personal opinion, not
necessarily that of the ARISSat-1 team or anyone else. I might be
missing information that would affect
Dear Gould / ARISSat-1 team,
Thanks for sharing this !
When the battery would go dead (or has very long charge times),
to what extend would that also impact the low power mode ?
Better phrazed: what are the requirements to go/stay in low power mode ?
Is there a (no power) mode, where there
Hi Clint,
The battery can run ARISSat-1 for about 6 days on
the ISS so it will still be almost fully charged
if they run it for just 1 day.
Once it is deployed, the solar panels will charge
the battery.
73,
Tony AA2TX
---
On 7/25/2011 6:39 PM, Clint Bradford wrote:
OK - Charging of the
On 16 Apr 2011 10:47:57, John P. Toscano, W0JT wrote:
Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
One small consolation is that if the ISS crew can't get it working before
tossing it into space, it could (possibly) be brought back to Earth on a
future return trip to be diagnosed
Robert WB5MZO
From: am25...@triton.net
To: amsat-bb@amsat.org
Date: Sun, 17 Apr 2011 02:47:09 -0400
Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
On 16 Apr 2011 10:47:57, John P. Toscano, W0JT wrote:
Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
One small consolation
On Apr 15 2011, R Oler wrote:
There are LOTS of reasons that the bird could have failed, in my viewpoint
the BEST one is that the battery has some issues. Operating the vehicle in
a thermal environment that it was not designed for would be a first guess,
followed by some sort of crib death
-bb] Re: ARISSat-1 - Battery Failure
On Apr 15 2011, R Oler wrote:
There are LOTS of reasons that the bird could have failed, in my viewpoint
the BEST one is that the battery has some issues. Operating the vehicle in
a thermal environment that it was not designed for would be a first guess
There are LOTS of reasons that the bird could have failed, in my viewpoint the
BEST one is that the battery has some issues. Operating the vehicle in a
thermal environment that it was not designed for would be a first guess,
followed by some sort of crib death issue, and next comes parts
;
Subject: [amsat-bb] Re: ARISSat-1 battery
To: lt;amsat-bb@amsat.orggt;
Message-ID: lt;003601cbfa5a$09915070$1cb3f150$@netgt;
Content-Type: text/plain; charset=US-ASCII
All I have to say here is quot;Pollyanna is alive and wellquot;. The
spin machine
goes into action. See below.
Tom
can it default to solar cells? aka AO-7
73 Bob W7LRD
- Original Message -
From: Clint Bradford clintbradf...@mac.com
To: AMSAT BB amsat-bb@amsat.org
Sent: Thursday, April 14, 2011 8:33:40 AM
Subject: [amsat-bb] ARISSat-1 - Battery Failure
RadioSkaf's Alexander, RA3WOK, just
I think I remember the answer is yes.
Mark N8MH
On Thu, Apr 14, 2011 at 12:38 PM, Bob- W7LRD w7...@comcast.net wrote:
can it default to solar cells? aka AO-7
73 Bob W7LRD
- Original Message -
From: Clint Bradford clintbradf...@mac.com
To: AMSAT BB amsat-bb@amsat.org
Sent:
According to Anthony AA2TX's presentation/research ...
-The battery must be initially charged to power up ARISSat-1
-The battery must have a charge for the initial 15 minutes of activation
-ARISSat-1 will power down during eclipse if battery fails
-ARISSat-1 can operate without battery in
Hi Bob all..
As far as I can see, the main reason it needs power is to allow the
transmitter to stay in the OFF state during deployment and for 15
minutes after release, once it switches ON the battery can be depleted
without any adverse effects.
This was talked about here on -bb a few weeks
: [amsat-bb] Re: ARISSat-1 - Battery Failure
I think I remember the answer is yes.
Mark N8MH
On Thu, Apr 14, 2011 at 12:38 PM, Bob- W7LRD w7...@comcast.net wrote:
can it default to solar cells? aka AO-7
73 Bob W7LRD
- Original Message -
From: Clint Bradford clintbradf...@mac.com
Dear Friends,
There has been a great deal of speculation on the amsat-bb about
the Russian battery on ARISSat-1 having failed. Be aware that this
is nothing other than idle speculation. There has been no
information from RSC-Energia to support this.
I believe the mis-information comes from a
- Original Message -
From: Anthony Monteiro aa...@comcast.net
To: AMSAT BB amsat-bb@amsat.org
Sent: Thursday, April 14, 2011 9:42 PM
Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
Dear Friends,
There has been a great deal of speculation on the amsat-bb about
the Russian battery
Hi,
If we is the hams arournd the world I think most of us we ready to rock
and roll then some. Im not sure what did or didn't happen. I just hope they
do somthing before July a re run of the test is a thought.
73
kc9pxz
Jimmy
- Original Message -
From: g0...@aol.com
To:
Well found Matt
Looks like the contents of page 9 highlight some potentially critical
issues.
Time will tell.
David
In a message dated 13/04/2011 20:11:43 GMT Daylight Time,
sq7...@poczta.onet.pl writes:
http://arissat1.org/media/pdf/ARISSat-1%20CDR%20Battery.pdf
very
All I have to say here is Pollyanna is alive and well. The spin machine
goes into action. See below.
Tom Schuessler, N5HYP
__--
Subject: [amsat-bb] ARISSat-1 battery.
From: G0MRF@xxx
Date: Wed, 13 Apr 2011 10:11:21 EDT
http://www.federalspace.ru/main.php?id=2nid=11374lang=en
From: g0...@aol.com
Sent: Wednesday, April 13, 2011 11:31 PM
To: sq7...@poczta.onet.pl ; amsat-bb@amsat.org
Subject: Re: [amsat-bb] Re: ARISSat-1 battery.
Well found Matt
Looks like the contents of page 9 highlight some potentially
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