NavList:

From Gary LaPook:

It is easier to use a E-6B aviation computer (a circular slide rule with a vector diagram plotting device on the back) which makes it  easy to draw the necessary vector diagram on it and only costs about $15 at every pilot shop.


Bill Burchell wrote:

Robert wrote:

  

I calculate the course made good by actually plotting a vector on my
chart or plotting sheet. I use the latitude scale to represent the
drift and the compass rose for the set. Does anyone do it
mathematically in practice?
    

I do play with it mathematically using the law of sines and cosines rather
than the 4 sets of formulas set forth in texts.  In practice I generally use
a plotting sheet, and may transfer the results to a chart.  Less wear and
tear on the chart. The math is much harder on board than it is on the dining
room table, and is always sanity checked against a sketch anyway.  The
affect of a blunder is pretty harmless at the dining room table ;-)

Bill




  

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