From owner-freebsd-hardware Wed Jun 21 17: 7:14 2000 Delivered-To: freebsd-hardware@freebsd.org Received: from athena.lightningone.net (athena.lightningone.net [12.34.104.3]) by hub.freebsd.org (Postfix) with ESMTP id 909FB37C0DC for ; Wed, 21 Jun 2000 17:07:11 -0700 (PDT) (envelope-from john@essenz.com) Received: from localhost (john@localhost) by athena.lightningone.net (8.9.3/8.9.3) with ESMTP id UAA52555; Wed, 21 Jun 2000 20:23:54 -0400 (EDT) (envelope-from john@essenz.com) X-Authentication-Warning: athena.lightningone.net: john owned process doing -bs Date: Wed, 21 Jun 2000 20:23:53 -0400 (EDT) From: Essenz Consulting X-Sender: john@athena.lightningone.net To: Duncan Barclay Cc: Olaf Hoyer , Brian Handy , freebsd-hardware@FreeBSD.ORG Subject: Re: Hardware in space? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org 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. > ________________________________________________________________________ > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hardware" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message