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Date:      Wed, 21 Jun 2000 20:23:53 -0400 (EDT)
From:      Essenz Consulting <john@essenz.com>
To:        Duncan Barclay <dmlb@ragnet.demon.co.uk>
Cc:        Olaf Hoyer <ohoyer@fbwi.fh-wilhelmshaven.de>, Brian Handy <handy@lambic.physics.montana.edu>, freebsd-hardware@FreeBSD.ORG
Subject:   Re: Hardware in space?
Message-ID:  <Pine.BSF.4.10.10006212022590.52533-100000@athena.lightningone.net>
In-Reply-To: <XFMail.000621231257.dmlb@computer.my.domain>

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Even if there is no air, it still will be cooled, considers

On Wed, 21 Jun 2000, Duncan Barclay wrote:

> Hi all,
> 
> > 
> > 2) Which computing power will be needed?
> > If the power of a 486 will suffice, there should be no need for special
> > cooling, since a run of, say 15 minutes won't overheat the chip.
> > 
> > 3) Is it really necessary to have air in?
> > (Except from cooling purposes or movement maker for HDDs)
> > 
> > 4) For thermal insulation, is it possible to use something like styrofoam
> > around the computing parts? (Or sometimes for housebuilding purposes there
> > is similar foam for insulation, that you can "spray" from a can)
> > 
> > 5) Real problem: Acceleration. If I got you right, we talk about some
> > launch phase of some minutes, then a ~5 minute picture shooting, and then a
> > landing and perhaps some notification via GPS where to pick up the parts.
> 
> Heat could the the main problem. Depending on how high you are going up,
> the assumption that an air cooled device will be cooled fails...There is no
> air! Devices that are designed to be cooled by convection may over heat.
> 
> Duncan
> 
> ---
> ________________________________________________________________________
> Duncan Barclay          | God smiles upon the little children,
> dmlb@ragnet.demon.co.uk | the alcoholics, and the permanently stoned.
> ________________________________________________________________________
> 
> 
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