Like any design a cost-benefit analysis would be required to determine
if the Gatling arrangement is even necessary. I am sure there are about
a dozen ways to "skin the cat". (My apologies to my pet cat Mac)
On 1/17/2012 11:04 PM, Gary "Joe" Mayfield wrote:
This is a fun thought exercise. The
This is a fun thought exercise. The gatling gun is one option. I prefer
something with no moving parts. It should be possible (not easy) to center
one engine on each side. That would be six engines. Once in orbit take the
time to stabilize the satellite along the first axis before firing the f
Hi Alan,
I found the following listing in a 1982 "Foreign Listings Callbook": (I knew I
saved this for a reason...)
JA8TCH Mori Seigi, 81-75 Taihei, Shinoro, Kitaku, Sapporo, Hkd 001
Now, that was from 30 years ago... presuming the call hasn't been re-issued,
maybe a starting place?
Good
If you remember a few weeks ago KC9ROI braving the cold to work ARISSat-1.
I thought that was pretty neat and I had to get a Satellite
Communicators Club Certificate to him and what better way than at one of
their club meetings. I sent the certificate out the next day for a
meeting they had Sa
I have developed the perfect solution;
A gatling gun type canister for the rocket motors would solve all of
your objections per below:
On 1/17/2012 4:22 PM, Ken Ernandes wrote:
How would attitude be controlled so the thrust is in the correct direction?
Spin stabilization about the maximum m
On 17/01/12 03:42, Gregg Wonderly wrote:
The biggest issue that causes recession and then depression in the
economy, is when the value in the economy out strips the cash available
to support that value. When everyone buys the "cheapest" item, and it is
a defective item, that then doesn't live lo
You might find this interesting.
http://www.tomdoyle.org/SimpleSatTracker
Sent from my computer.
73 W9KE tom ...
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Aah but David, its a start along the lines you and I have been trying to
drum up interest. You gotta crawl before you walk. As you know well,
it's the way to start out in LEO (cheaper launch) and then nudge it into
MEO. I said before, it's gonna happen since it's the obvious solution to
getting
Pretty cool idea! Of course Aerotech sells much larger engines with
hundreds of newton-seconds of total impulse, and somewhere close to 100
pounds of instantaneous thrust when it is first lit! And even if it stays
in LEO, this certainly prolongs its life...
What I wonder about is how the 3-axis
How would attitude be controlled so the thrust is in the correct direction?
Spin stabilization about the maximum moment off inertia axis is probably the
best choice. This would require a magnetic torquing system.
Another issue is the thrust needs to be directed through the spacecraft's
center
Anyone know who has the record for the most ham QSO's in space?
Astronaut Doug Wheelock maybe?
Just curious. It would be a nice record to have some other people try
to break and incentive to keep the activity going.
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Alan, maybe the JARL has his info. (Japans equivalent of our ARRL)
73, Ted K7TRK
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Alan P. Biddle
Sent: Tuesday, January 17, 2012 12:30 PM
To: AMSAT-BB; SAREX-BB
Subject: [amsat-bb] Seeking
David;
There are some much bigger motors! Ask the Level-3 rocketry folks!
Anyway a cluster of medium sized motors could be fired individually as
required to raise altitude. I would think that SRB's would be more
reliable and safer than hypergolic used on previous Oscars. There would
of course
Hi,
I am looking for information, particularly an email address, for JA8TCH.
He(?) was one of the last to receive telemetry from ARISSat-1.
Unfortunately there is no listing in English sources such as QRZ.COM, though
I got several hits from Japanese language sites, including an Echolink node.
Ala
Thanks Joe.
What an exciting concept.
Having got really enthusiastic, I thought I would roughly calculate how
high one of these little rockets could raise the orbit.
Given that one rocket reload pack has
40 Newtons of thrust
and lasts for about one second
We have 40 Newton seconds of spe
https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=50384&RequestTimeout=1000
73,
Jan
WB6VRN
MSL Telecom
NASA Jet Propulsion Laboratory
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Not an A
Is there any interest in either of these boards?
I have one each available, working the last time I used them.
Contact:
W3TMZ
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Pedro,
For 9600B I connect PTT and TX data to the sub jack and receive audio to the
Main Jack. This has worked fine for many satellites and several different TNC's.
For 1200b I use the aux jack. This works fine for both satellite and simplex.
Bom Gia and 73
Tom K8TL
__
So the bomb on board (the pressure bottle for the Nitrogen system) isn't
hazardous? Try selling that to Manned flight safety folks.
Alan and Joe are right.
Bob
N4HY
On Jan 17, 2012 4:22 AM, "Alan P. Biddle" wrote:
> Trevor,
>
> The key part is that it was a manned mission. The complexit
I am agree with John, for Mexican stations we hve less time to get the QSO and
the US hamradio operator have most of the pass to do it.. and in Mexico you can
count with only one hand the satellite operator per orbit...
Just a little break.
If someone do it or not I will continue try to comple
Trevor,
The key part is that it was a manned mission. The complexity of the safety
paperwork, let alone the mission, jumps because of that. Pyrotechnics of
any sort are always an issue, but much less when the mission only involves
hardware.
Alan
WA4SCA
-Original Message-
From: amsat-
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