[amsat-bb] Re: Fwd: Re: Rideshare missions to GTO, $800K for 3U Cubesat

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.


-----Original Message-----
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).
> 73,
> John

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?

73,  Bruce



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