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   rec.arts.sf.science      Real and speculative aspects of SF scien      45,986 messages   

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   Message 44,685 of 45,986   
   Mikkel Haaheim to All   
   Re: James S.A. Corey's answer to There A   
   25 Nov 16 06:49:26   
   
   From: mikkelhaaheim@gmail.com   
      
   Le dimanche 16 octobre 2016 07:19:43 UTC+2, Rick Pikul/Chakat Firepaw a   
   écrit :   
      
   > Remember that those values are for when you generate steam that you will    
   > either need large, strong, heavy tanks to hold, (a tank at 10atm would be    
   > a minimum of 32m across to hold 1000t of steam, it would also be ~450K),    
   > or that you have to vent to create a nice IR emitting cloud that's    
   > following you around.   
      
   Yes. The steam will have to be vented... at an average rate of about 25g/s.   
   Since we are talking about velocities in the range of kms (as in the plural of   
   km)/s, this would mean gas densities on the order of 1g/40m^3 (or less). You   
   are not going to get a    
   lot of IR radiance at such a pathetic density.   
      
      
   > > Not really. I am assuming the limits imposed by physical laws.   
   >    
   > Using input values that are utter BS.   
      
   Provide your evidence. Facts and figures, please.   
      
   > That just means that the heaters are biological rather than electrical.   
      
   Right. The 100w/person already factored in.   
      
      
   > > Military budgets are not infinite. The military already makes tough   
   > > choices beteen the various systems they wish to deploy. They tend to   
   > > favour systems that allow them to project power over those systems that   
   > > merely allow them to detect.   
   >    
   > Asked and answered in another post.  What's more, it's a post that you    
   > clearly read because you used information from it.   
      
   ??? WHAT was asked and answered?   
      
      
   > "Was I to die this moment, ‘Want of Frigates’ would be found stamped on    
   > my heart." -- Lord Admiral Horatio Nelson   
   >    
   > The sensor platforms we are talking about are to interplantary war what    
   > frigates were to Napoleonic naval war. (or radar stations and satellites    
   > are to modern war).   
      
   You appear to have a misperception of what such platforms can actually do.    
   Even assuming detector sensitivites  1000x superior to current tech (which   
   actually probably won't be able to go beyond 25x improvement in performance   
   before running into the theoretical limits), you would be hard pressed to   
   detect an actual stealth    
   craft at ranges much over 10 000 000 km. Your famous solar polar platforms   
   would be lucky to be within a detectable range during even a fraction of a %   
   of their orbit.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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