Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship


      

Other Books by
Hal Roth
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Re: Averaging

From: Michael Dorl (no email)
Date: Thu Oct 07 2004 - 07:58:49 EDT

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    >
    >(However, I imagine that this recommendation has to be modified
    >for a navigator of a strategic bomber flying at 600 knots.
    >I don't know much about the aerial navigation, but I suppose
    >it had to be done by cell nav before GPS era, and if you are over an
    >ocean).

    As I understand it, there's an added problem in a plane because the plane
    tends to roll causing the gravity
    vector to oscillate. Many of the WW2 era aviation sextants have mechanical
    averaging devices to compensate
    for this; mine has a 1 minute averager. One minute at 300 miles per hour =
    5 miles.


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