[amsat-bb] Re: Fwd: Re: Rideshare missions to GTO, $800K for 3U Cubesat
Alan P. Biddle
APBIDDLE at UNITED.NET
Fri Feb 4 05:59:06 PST 2011
In some ways, the CubeSat programs resemble the old "X Projects" that the US
did with aircraft. Instead of building from scratch the ultimate plane,
they built a series of test beds that were designed to do one thing very
well. Eventually, the lessons learned from each project were combined into
a single airframe. For us, the trick is to ALWAYS provide useful
communications along with whatever is being developed.
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of G0MRF at aol.com
Sent: Friday, February 04, 2011 7:29 AM
To: ve9qrp at gmail.com; amsat-bb at amsat.org
Subject: [amsat-bb] Re: Fwd: Re: Rideshare missions to GTO,$800K for 3U
AO-24 was in a low inclination orbit. Probably a transfer orbit inclination
of 2 -5 degrees. I recall the transponder output was up near 2450MHz.
It was very high and had excellent coverage. I believe it failed because it
went into a planned shutdown due to something like eclipse or temp etc.
Unfortunately it never switched back on.
While it was there it was very good. A bit low in the sky if you lived
above or below 60N or 60S but nice and easy to track. Like AO-40 it was
in the southern sky from here.
When we talk about 10 million to launch it's worth remembering that the
approach that has shrunk usable satellites to 1-3U cubesats can also be
applied to MEO or GTO / HEO sats. Arianespace may no longer be flying test
flights, but Falcon 9 will go to GTO (and needs to be tested) as will the
Indian launcher. There are new satellites going en-mass to 20,000km too. A
ride share with Galileo etc may be just as good.
In a message dated 04/02/2011 13:08:19 GMT Standard Time, ve9qrp at gmail.com
---------- Forwarded message ----------
From: Bruce Robertson <ve9qrp at gmail.com>
Date: Fri, Feb 4, 2011 at 8:49 AM
Subject: Re: [amsat-bb] Re: Rideshare missions to GTO, $800K for 3U Cubesat
To: "John B. Stephensen" <kd6ozh at comcast.net>
On Thu, Feb 3, 2011 at 7:46 PM, John B. Stephensen <kd6ozh at comcast.net>
> The interesting question is is how much will AMSAT members be willing to
> invest in ground stations. A 3U cubesat could provide a HEO satellite
> similar to Arsene (AO-24).
That's a great point, John, and an interesting analogy, which I'd not
heard about before. Does anyone have recollections and experiences
with AO-24 that they could share?
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