Re: plutonium packs

[Ted de Castro <tdc@xrayted.com>]

On the SNAP series - the PU-238 heat source is in a Be cyl/shell that
has a LOT of thermocouples attached.  The cold side of the thermocouples
presses up against a Be cyl with fins assembly that radiates the heat
into free space.

A VERY simple device - not quite so simple to make.  There is quite a
trick to brazing the Be.

Tom Savin wrote:
> 
> 
> --
>  Can anyone give me a lead on how NASA's plutonium generators power their spacecraft?
> 
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