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> Courtney, wrote:
> "I'm interested in possibly programming a calculator to handle
> some
> navigation calculations to avoid carrying cumbersome tomes

An alternative is to use a very small and convenient
non-programmable
calculator
with a simple paper form where the order of calculations
is recorded. I use Casio fx-250D which has a great advantage
that you can input sexagesimals (degrees, minutes) with a special
key. Reducing one sight (one position line from an altitude)
takes about
5-6 minutes
after some practice.

To my surprise, I found many recommendations on the use of this
very same Casio in my Russian 1971 manual.
The author even optimized the usual sin h formula,
specially for use on this calculator.

I can post his formula if anyone is interested. It requires 68
key pressings, including the sexagesimal data input,
for solving one nav triangle.

Alex.

   

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