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    Re: A Sun-compass landfall?
    From: Tony Oz
    Date: 2021 Apr 9, 05:10 -0700

    Dear Gary,

    I can see the flaw in my "method": if the headwind makes my groundspeed == zero, I'll never reach the destination despite my plane stays wing-to-the-Sun-wise.

    So, for the "Sun-compass landfall" to work, the plane must have very certain speed - not slower than some minimum. If it were lightning fast, we'd reach the destination along the approach LoP at once.

    How does this minimum speed depend on the circumstances?

    Regards,
    Tony
    60°N 30°E

       
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