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    Re: Celestial Flight navigation in KC-135
    From: Gary LaPook
    Date: 2013 Jun 26, 23:44 -0700
    In fact, there is a C-137 less than five miles from my house and when you walk through it you can see the Kollsman periscopic sextant mount in the overhead in the cockpit.
    http://fer3.com/arc/m2.aspx/Kollsman-periscopic-sextant-mount-LaPook-aug-2011-g16891
    gl

    --- On Wed, 6/26/13, Gary LaPook <garylapook@pacbell.net> wrote:

    From: Gary LaPook <garylapook@pacbell.net>
    Subject: [NavList] Re: Celestial Flight navigation in KC-135
    To: garylapook@pacbell.net
    Date: Wednesday, June 26, 2013, 10:52 PM


    Thanks for that information. I should have said "that to a casual observer, the KC-135 looks a lot like a Boeing 707."

    gl

    --- On Wed, 6/26/13, Ronald van Riet <ronald{at}van-riet.nl> wrote:

    From: Ronald van Riet <ronald{at}van-riet.nl>
    Subject: [NavList] Re: Celestial Flight navigation in KC-135
    To: garylapook{at}pacbell.net
    Date: Wednesday, June 26, 2013, 1:34 AM


    Gary,

    You know a hell of a lot about celestial navigation, but you are wrong on the relationship between the 707 and the C-135.

    They were parallel developments and used completely different stress calculations, due to the fact that the C-135 was expected annually to fly about one tenth of the hours the civil 707 would be flown resulting for example in different aluminum alloys being used for the wings (see ISBN 0-85177-804-6 Peter M Bowers "Boeing Aircraft since 1916" p 463). They also had different cabin cross sections.

    The true military version of the 707 was the C-137.

    Ronald
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