Re: [amsat-bb] Arcjet Motor

["Larry P. Thomas wa0gwa" <lpthomas@xxxxxxxxx>]

At 10:46 AM 6/4/2001 -0700, you wrote:
>Could we do the orbit change in one burn, using a solid motor?
>Very reliable, light weight, good thrust.

And absolutely uncontrollable in duration, thrust magnitude and thrust 
vector once ignited.  Might be hard to get desired orbit!

>I'd still put the ArcJet on board, for tweeks.
>
>Greg.
>
>
>>From: sco@sco-inc.com
>>To: James Sharp <jsharp@psychoses.org>
>>CC: amsat-bb@AMSAT.Org
>>Subject: Re: [amsat-bb] Arcjet Motor
>>Date: Mon, 04 Jun 2001 11:37:17 -0400
>>
>>At 03:30 AM 6/4/2001 , you wrote:
>>> >
>>> > The arcjet motor uses simple fuel, that we can test ... here on earth.
>>> > Perhaps the next satellite will be smaller than AO-40 and use the arcject
>>> > (if it works well on AO-40) as its only propulsion system?
>>> >
>>>
>>>That all depends on the orbital parameters we want versus what we'll get
>>>from the launch.  If we want a high inclination orbit, but get a launch
>>>into a GTO, the arcjet just isn't going to have the guts to move the bird
>>>in a reasonable amount of time...but if we end up with a favorable launch
>>>orbit and just need to tweak it, the arcjet will work just fine.
>>
>>I would rather take more time in moving the satellite (if the arcjet would
>>work) instead of again risking the fact that we might blow up part of the
>>satellite using the same engine/fuel combination now on AO-40. I would
>>rather be "Safe" than "Sorry" ... even if it took longer to get to the
>>intended orbit.
>>
>>W4SCO
>>
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>
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