NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Breed's Graphical Navigation
From: Hanno Ix
Date: 2015 Feb 26, 21:34 -0800
then to unfold it . With that, all sides may be spread into one plane, and all components can be measured.
If you were to cut the drawing out of the page and fold / glue it back together again you could actually hold it in your hands. It would be an impressive show to model this process with a precision CAD, wouldn't it?
H
From: Hanno Ix
Date: 2015 Feb 26, 21:34 -0800
Kermit,
Breed's idea is to construct a tetrahedron T(pole, GP, AP, Earth's center ),On Thu, Feb 26, 2015 at 8:51 PM, Antoine Couëtte <NoReply_Couette@fer3.com> wrote:
RE: g30482
Hello Hanno,
"Navigation without Numbers" seems a very interesting book.
The quoted example is very interesting: with L=41°, D=39° & T=105°, compute H=15°08.0' (with Z=309°), while the "hand drawn" value for A shows 75°, which would translate into H=15°, I would assume.
This drawing is fascinating. I need to study it in more detail.
Kermit
