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    Re: Astro Navigation on Pan American Flying Clippers
    From: Fred Hebard
    Date: 2005 Mar 26, 10:42 -0500

    Apologizing for not having read this book, I wonder when the averaging
    bubble sextant was developed.  Plath's "System Gago  Coutinho" was
    released in 1926, but I assume there was no mechanical averaging
    method.  When were sextants such as the Fairchild A10 developed?
    
    Fred
    
    On Mar 26, 2005, at 9:36 AM, Henry C. Halboth wrote:
    
    > There is a book entitled "Avigation", authored by Bradley Jones, and
    > published by John Wiley & Sons, Inc., New York, and Chapman & Hall,
    > Ltd.,
    > London, in 1931, that covers air navigation methods of that era in
    > quite
    > some detail, and covers all the celestial methods then in use, both
    > surface and air.
    >
    > On Fri, 25 Mar 2005 12:23:51 -0000 Zvi Doron 
    > writes:
    >> I am looking for infrmation on the methods used by navigators on long
    >> haul
    >> civil flights in the 1930s and 40s. Several sources mention the Pan
    >> American
    >> Flying Clippers, to the extent that Pan Am staff trained US Army Air
    >> Cor.
    >> Navigators early in WWII.
    >>
    >> I wonder if there was a book written by any of their ex navigators
    >> describing instruments, methods and experience gained. I have a book
    >> called
    >> Most Probable Position by Monte Duane Wright that covers some of it
    >> but am
    >> looking for more detail.
    >>
    >> Thanks for any suggestions.
    >>
    >
    
    
    

       
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