From one of the great minds of our history. Marty showed us how good the
kinds of writing he did would be for us..
The first photo is one of the first formal meetings where Karl, Jan, Marty
Davidoff, Tom Clark and others discuss Phase 3A. These were GLORIOUS years
for AMSAT. No one denies
Ah yes and how many knew Martin Sweeting was involved in early design
meetings for P3A? Sorry for leaving you out Sir Martin!
On Sun, Sep 29, 2013 at 11:14 AM, Robert McGwier rwmcgw...@gmail.comwrote:
From one of the great minds of our history. Marty showed us how good the
kinds of writing
Those must have been exciting times!
73, Jim KQ6EA
On 09/29/2013 03:27 PM, Robert McGwier wrote:
Ah yes and how many knew Martin Sweeting was involved in early design
meetings for P3A? Sorry for leaving you out Sir Martin!
On Sun, Sep 29, 2013 at 11:14 AM, Robert McGwier
This I can say, for a fact, is not true. PROFESSIONALS did the fueling and
safing as was required by contractual arrangements ahead of time.
Eye witness testimony given to me says there was an argument about what to
do about the RBF plug. Extenuating circumstances, a nearly perfect storm
of
I recently obtained a copy of the 1990 edition of Martin Davidoff's
Satellite Experimenters' Handbook and as I was browsing through the book, I
came across a passage on page 4-9 about the difficulties with UO-11, that's
very relevant to the ongoing debate about the lack of Phase 3 satellites:
If
- Original Message -
From: Daniel Schultz n8...@usa.net
To: amsat-bb@amsat.org
Sent: Sunday, September 22, 2013 5:26 AM
Subject: [amsat-bb] Re: Phase 3
Could a 3U cubesat with deployable solar panels power a 1 watt,
100 kHz, mode U/V transponder?
Yes, I believe that is possible
Gordonjcp MM0YEQ wrote:
You could conceivably rip the RF board out of a UHF and VHF one and couple
it
with your own CPU and audio board, and have a ~150 gramme mode V/U
transponder
on a standard 10x10 cubesat board. You could use a 10m SDR and a wee DSP
board
like the ones that TI does for a few
The apogee motors for OSCAR-10,and OSCAR-13 were solid propellant
400 Newton trust motors donated to AMSAT-DL by the Messerschmitt Aerospace
Company in Germany.
Only Phase 3A had a solid fuel motor. AO-10 and AO-13 had liquid fuel
bi-propellent motors the same as AO-40. No matter how well
Hi Dan,
OSCAR-10 (P3-B) used the same 400N engine as OSCAR-13 (P3-C) and
OSCAR-40 (P3-D).
For P3-E we have a 200N motor from EADS Astrium, the same one which is
used on the European ATV...
I was AMSAT P3-A (planned to be OSCAR-9) which used a solid propellant
apogee kick-motor.
It's
On Fri, Sep 20, 2013 at 11:23:29PM +0600, R Oler wrote:
While anything is possible I will be very surprised (pleasntly) if there is
another amateur radio satellite with a liquid propulsion system that is
managed by any amateur group that gets a ride into any sort of HEO transfer
orbit.Ion
:-)
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Gordon JC Pearce
Sent: zaterdag 21 september 2013 11:49
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Phase 3
On Fri, Sep 20, 2013 at 11:23:29PM +0600, R Oler wrote:
While
Vermeersch a...@skynet.be wrote:
:-)
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Gordon JC Pearce
Sent: zaterdag 21 september 2013 11:49
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Phase 3
On Fri, Sep 20, 2013 at 11:23:29PM
What is realistically achievable with a 3U cubesat with an ion engine?
Cost of the satellite?
Cost of the launch?
Time/cost to develop ion engine?
How many month/years would it take for an ion engine to boost a 3U
cubesat from 600 km to 2000 km?
What is the altitude limit for an ion engine?
Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Gordon JC Pearce
Sent: zaterdag 21 september 2013 11:49
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Phase 3
On Fri, Sep 20, 2013 at 11:23:29PM +0600, R Oler wrote:
While anything is possible I will be very
As far as I know, the kick-motors used on the Phase-3 birds were NOT
cardboard tubes packed with homemade gunpowder. They were commercial
grade motors obtained from the commercial aerospace industry. If I am
wrong about this, and someone can jump in with facts, I'd be glad to hear.
On
Not to single out Michael on this, but I need to chime in. Realism has
its place, but it also has its dangers. Too much of it, and you just
might get your way.
At work, several major programs were behind schedule. The teams were
working hard, but cutting-edge work is never easy, and
Greg,
Great story - I love it!
To pick a service, the Marines have what is
called CAN DO attitude - they have a great
history of achievement. If all you have is
CAN'T DO, you won't. Certainly one must know
the fights to pick and those to
skip. Fortunately there are a few who didn't
that little frog kept thinking,the difficult I can do immediately the
impossible may take a little longer
- Original Message -
From: Greg D ko6th.g...@gmail.com
To: amsat-bb@amsat.org
Sent: Saturday, September 21, 2013 12:48:00 PM
Subject: [amsat-bb] Re: Phase 3
Not to single out
- Original Message -
From: Angus McLeod amcl...@caribsurf.com
To: amsat-bb@amsat.org
Sent: Saturday, September 21, 2013 9:27 PM
Subject: [amsat-bb] Re: Phase 3
As far as I know, the kick-motors used on the Phase-3 birds were NOT
cardboard tubes packed with homemade gunpowder
Subject: [amsat-bb] Re: Phase 3
What is realistically achievable with a 3U cubesat with an ion engine?
Cost of the satellite?
Cost of the launch?
Time/cost to develop ion engine?
How many month/years would it take for an ion engine to boost a 3U
cubesat from 600 km to 2000 km?
What
I don't think we'll ever be in a position to buy a launch the most we
will ever be able to do is hope to piggy-back with a paying customer and
possibly contribute to expenses.
$8,000,000 is our expected contribution to the expenses. The actual launch
cost is in the hundreds of millions.
Maybe
The actual launch cost is in the hundreds of millions
Not quite.
I work for a commercial launch provider, and the cost to put a large
satellite (DirecTV or Intelsat) into GTO is $95~$110 million, inclusive.
You ship it to us, and we'll get it into space at the correct injection
point.
If I recall,the amateur satellite community were instrumental in
pioneering the 'secondary payload' concept. Pity nobody thought to
patent the idea!
On 09/22/2013 12:04 AM, Jim Jerzycke wrote:
The actual launch cost is in the hundreds of millions
Not quite.
I work for a commercial launch
I don't think we'll ever be in a position to buy a launch the most we
will ever be able to do is hope to piggy-back with a paying customer and
possibly contribute to expenses.
Maybe having a payload on the shelf ready isn't such a bad plan if a
short window of opportunity were to open up
, September 20, 2013 15:54 UTC
Subject: [amsat-bb] Re: Phase 3
I don't think we'll ever be in a position to buy a launch the most we
will ever be able to do is hope to piggy-back with a paying customer and
possibly contribute to expenses.
Maybe having a payload on the shelf ready isn't such a bad
The problem is that the government is no longer paying for those expenses as
they did in the past.
73,
John
KD6OZH
- Original Message -
From: Rob pabut...@gmail.com
To: amsat-bb@amsat.org
Sent: Friday, September 20, 2013 15:54 UTC
Subject: [amsat-bb] Re: Phase 3
I don't think
AMSAT-DL was the lead for phase 3 because they were able to get almost-free
launches from ESA. However, ESA terminated that policy 10 years ago and
AMSAT-DL has been trying to get government funding through their Mars
program. That was rejected a year or two ago. Private launch companies are
for those expenses as
they did in the past. The $8,000,000 is the incremental cost not the cost of
the
entire launch.
73,
John
KD6OZH
- Original Message - From: Rob pabut...@gmail.com
To: amsat-bb@amsat.org
Sent: Friday, September 20, 2013 15:54 UTC
Subject: [amsat-bb] Re: Phase 3
Hello Peter,
I understand the current situation and and do not think that there should be
any change in the direction of the P3E project keeping into mind the time and
money spent by AMSAT DL on this project, we have sent you the list of contacts
in ISRO some months back and AMSAT India can
We from AMSAT INDIA have written to AMSAT DL in the past and have offered to
talk to ISRO in this regard for any launch opppurtunities for the Phase 3
express.
73
Nitin [VU3TYG}
Secretary, AMSAT INDIA
___
Sent via AMSAT-BB@amsat.org. Opinions
We from AMSAT INDIA have written to AMSAT DL in the past and have offered to
talk to ISRO in this regard for any launch opppurtunities for the Phase 3
express.
73
Nitin [VU3TYG}
Secretary, AMSAT INDIA
___
Sent via AMSAT-BB@amsat.org. Opinions
On 28.01.2012 01:34, Andrew Glasbrenner wrote:
Back to P3E. I like David's idea. I'd like even more to hear something
similar from Peter or Hartmut. I've donated to P3E in the past, and voted as
a BOD member to help fund their lab out of the -NA reserves several years
ago. I love the
Is the P3-E satellite actually ready and available to be matched up to a
rocket for launch into a high elliptical space orbit?
-Original Message-
From: Peter Guelzow
Sent: Sunday, January 29, 2012 5:33 PM
To: Andrew Glasbrenner
Cc: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Phase 3
Hi Dan.
SurelyNo ITAR problems, as AMSAT-NA pulled out of the P3E development
due to ITAR.
Don't forget to add Iran or North Korea (Hi)
David G0MRF
In a message dated 27/01/2012 22:10:25 GMT Standard Time, n8...@usa.net
writes:
2. China's Long March
Serious ITAR problems...
Oh..
Another (more serious) possibility.
Forget GTO and negotiate a low cost launch on one of the remaining 5 Vega
development flights (1500km?)
Then use propulsion to get to MEO.
Better than sitting on the ground and it tests the propulsion systems and
software for P5A
David
Yeah!!! Let's keep at 'em David.
Propulsion is the only answer we have to a better orbit. Sure - it has
difficulties but then the challenge will be worth it. A 3U with 2U worth
of propulsion should do it.
Regards...Bill - N6GHz
On 1/27/2012 2:31 PM, g0...@aol.com wrote:
Oh..
Another
Forget GTO and negotiate a low cost launch on one of the remaining 5 Vega
development flights (1500km?)
Then use propulsion to get to MEO.
Best idea I've heard yet.
73, Drew KO4MA
___
Sent via AMSAT-BB@amsat.org. Opinions expressed are
Great Andy,
Let us all be positive, follow Andy's lead, plus send in a buck or two!!
Forget GTO and negotiate a low cost launch on one of the remaining 5 Vega
development flights (1500km?)
Then use propulsion to get to MEO.
Best idea I've heard yet.
73, Drew KO4MA
At 09:31 AM 1/28/2012, g0...@aol.com wrote:
Oh..
Another (more serious) possibility.
Forget GTO and negotiate a low cost launch on one of the remaining 5 Vega
development flights (1500km?)
Then use propulsion to get to MEO.
Better than sitting on the ground and it tests the propulsion
Who is Andy?
73, Drew KO4MA
Sent from my iPhone
On Jan 27, 2012, at 6:47 PM, Dave Guimont dguim...@san.rr.com wrote:
Great Andy,
Let us all be positive, follow Andy's lead, plus send in a buck or two!!
Forget GTO and negotiate a low cost launch on one of the remaining 5 Vega
Drew's Evil Twin ??
TK, K7TRK
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Andrew Glasbrenner
Sent: Friday, January 27, 2012 4:06 PM
To: Dave Guimont
Cc: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Phase 3 Express Launch
Drew's Evil Twin ??
That would be KU4OS. Or more correctly I am -his- evil twin (the one with the
black beard, sash, and dagger).
Back to P3E. I like David's idea. I'd like even more to hear something similar
from Peter or Hartmut. I've donated to P3E in the past, and voted as a BOD
member
This is not a forum for politics, but a little pressure where it is
needed to promote as much new young blood as we can to get interested
in launch science and ham radio satellites.
At 04:34 PM 1/27/2012, you wrote:
Drew's Evil Twin ??
That would be KU4OS. Or more correctly I am
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