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    Re: Dip-meter again
    From: Fred Hebard
    Date: 2012 Apr 10, 17:06 -0400

    Alex,
    
    The inertial nav I was discussing was for determining the position of the 
    submarine prior to launch, rather than sat nav, as I had suggested earllier.  
    This is clear to me in the text I quoted, but perhaps not as clear to you, 
    being a non-native speaker of English.  It also aligns with my memories of 
    the description of the method, in National Geographic or wherever.
    
      
    Fred Hebard
    
    
    
    
    On Apr 10, 2012, at 2:52 PM, Alexandre E Eremenko wrote:
    
    > 
    > Fred,
    > 
    > I suppose that when speaking of "inertial nav" as a guidance system,
    > they mean the nav of the missile itself, not of the submarine.
    > 
    > To use an inertiale nav in the missle one needs the position
    > of the starting point. This is what Sat nav was for.
    > 
    > Now we see Shufeldt's report in new light:-)
    > The reaseach was made in 1957-1961 :-)
    > And then classified.
    > Exactly at the time when they developed the Polaris A-1 missile...
    > 
    > When Transit became available, they declassified the Shufeldt report.
    > 
    > So now we know what "Precision Cel nav" was really for:-)
    > 
    > Alex.
    > 
    > 
    > 
    > 
    > 
    > 
    > 
    
    
    
    
    

       
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