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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: A-5 Course and Distance Computer
From: David Pike
Date: 2021 Jun 29, 05:06 -0700
From: David Pike
Date: 2021 Jun 29, 05:06 -0700
Looking at the distance scales, which are most definitely logarithmic in nature and the course side scales which appear related to secant course, I think I can see why there has to be an alternative solution for courses less than 45 degrees. From 0-45 degrees secant course ranges from only 1 to 1.4 whereas from 45 to 90 it ranges from 1.4 to infinity. Therefore, the divisions on the scale from course = 0 to 045 would need a microscope to read them and would be effectively unprintable. What I’m looking at now is how calculating an equivalent chlat solves the problem. DaveP
