Fw: Re: [amsat-bb] Satellite propulsion thrust equations

[Andrew Glasbrenner <glasbrenner@xxxxxxxxxxxxxx>]

(meant to send this to the list as well)

David,

That is a very well written page, and an excellent idea. If you take it just a small step further, there are launches to 22-23k circular orbits coming up (soon?) in the Galileo program and maybe replacement GPS birds too. Who knows if we could get out foot in the door on one of these, but it is worth checking into...I'm not sure these are direct to this orbit, or if the Galileo and GPS s/c include their own propulsion though.

73, Drew KO4MA


-----Original Message-----
From: G0MRF@aol.com
Sent: Oct 11, 2005 5:27 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Satellite propulsion thrust equations

Hi folks.
 
Last week I saw the thread on the South African satellite, which rapidly  
developed into a "we need higher orbit satellites" discussion.
 
I wondered how high you need to go above a LEO orbit to get some reasonable  
coverage and scribbled a few 'daft' ideas at  _www.g0mrf.freeserve.MEOSAT.htm_ 
(http://www.g0mrf.freeserve.MEOSAT.htm) 
 
To take this forward, or to dismiss it as the case maybe...
My question is:   Is there any available software which can  calculate the 
increase in orbital height for particular changes in mass /  propellant / exhust 
velocity etc?
I've found various formulae at the NASA and ESA sites but there are so many  
variables its difficult to know where to start. - Well, it is rocket  science.
 
Regards
 
David  G0MRF
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