XPost: sci.astro.amateur   
   From: henry@spsystems.net   
      
   In article ,   
   Marc 182   wrote:   
   >Of course for any of that to work several other things would have to be   
   >true, not the least of which is that the RHUs would be enough to keep   
   >the inside of the probe warm during weeks of near or complete power down   
   >on that cold cold moon.   
      
   Exactly.  Unfortunately, there was also a requirement that the RHUs not   
   roast the inside of the probe before launch and while in space, including   
   quite a while spent relatively near the Sun.  So in practice, they   
   couldn't do the whole job, and a noticeable fraction of Huygens's power   
   consumption was for heaters.   
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                                   -- George Herbert       | henry@spsystems.net   
      
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