"Jim Macklin" wrote in message
news:CGYGg.5789$SZ3.2892@dukeread04...
Google found several "aviation Koch chart" links including
this one
http://wind-drifter.com/technical/technical.htm scroll
down the page.

So what? No one was asking what a Koch chart is, and hopefully everyone
here knows how to use Google by now.

They have some calculators listed, but the
Koch Chart is just the graph.

There are no calculators to provide the information that the Koch chart
provides.

But any high school math
teacher should be able to walk you through the solution of
the algebra problem to find the system of equations.

Doubtful. There is no single "system of equations" that provides the
general answer that a Koch chart attempts to provide. The best you can do
is to show what the Koch chart itself shows, and that chart is based on
general rules of thumb, not actual mathematically derived functions based on
actual density altitude effects.

Pete