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Article #140Re: nasa-celebrates-successful-mars-landing
From: Tim Williams
Date: Tue, 07 Aug 2012 22:59
Date: Tue, 07 Aug 2012 22:59
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"Jon Kirwan" <jonk@infinitefactors.org> wrote in message news:e0q228956bpb829qehome35ab6mcfoaps6@4ax.com... > Which reminds me of another thing. How do they convect the > internally generated heat away. I recall hearing about > multiple power systems, operating around 32V at near 2A. More > than one. This power must be convected/conducted away -- no > way they want to radiate it. I wonder if they push it > (costing more heat) towards a vane or arm and drag it around > on the surface to get rid of it? The atmosphere won't help > much. In addition to what the others have said, keep in mind the thing floated through space for six months -- you can't cool Pu238 down, so *all* that heat had to be dissipated, as radiation, from the backshell and heat shield, into space. The vehicle itself may've had cooling to the shell, but the shell still had to dissipate it. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
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From: "Tim Williams" <tmoranwms@charter.net>
Newsgroups: sci.electronics.design,aus.electronics,comp.arch.embedded
Subject: Re: nasa-celebrates-successful-mars-landing
Date: Tue, 7 Aug 2012 17:59:42 -0500
Organization: A noiseless patient Spider
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