Re: One Small Step
- From: Earl Colby Pottinger <earlcolby.pottinger@xxxxxxxxxxxx>
- Date: Thu, 26 Jan 2006 16:45:47 GMT
skearney@xxxxxxxxxxxxx :
> Thanks again for another very informative post. It does seem that
> critical electronics could be kept within a well insulated volume with
> minimum battery power to keep it warm. A small rover would make a good
> test bed for technolgy that will be necessary for any long term return
> to the moon. Its cost could be in the range of the stardust mission,
> apx $200M.
> It could send back some really swell pictures too.
For two weeks? That is a hell of a battery. And then you face the problem
that if you insulate good enough that the battery will last that long how do
you get rid of the heat when you operate during daylight?
Not claiming it is impossible, just that this is a very very hard problem.
Try it at home. Make a prototype circuit (any simple circuit), insulate and
place it in your deep freeze for two weeks. If the internal temperature
falls below 0C you have failed, if you do succeed now continue running the
circuit for the next two weeks still in the insulation outside the freezer,
if the internal temperture goes over 30C aain you have failed.
Earl Colby Pottinger
PS. Try to do this with a battery smaller than a car's battery while you are
at this.
--
<Cruising, building a Catamaran, Rebuilding Cabin, New Peroxide Still Design,
Writting SF, Programming FOSS - What happened to the time?>
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