NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: sextant without paper charts
From: Nicol�s de Hilster
Date: 2008 Nov 09, 10:16 +0100
From: Nicol�s de Hilster
Date: 2008 Nov 09, 10:16 +0100
bruce hamilton wrote: > If the sextant had continued to evolve, I think a gyroscopic base might > have been a good route. I saw one somewhere.Does anyone know about those? > Peter Ifland wrote about those in his 'Taking The Stars' (Malabar, 1998, pp.115-118). The gyroscopic horizon was invented in 1886 by G.E. Fleurriais of the French Navy. His book shows pictures of several versions; one by Hurlimann, Ponthus & Therrode Succ. A Paris, that still looks like a classic sextant, but with the gyro attached behind the horizon mirror. The other is a modified bubble sextant by C. Plath (SOLD gyro sextant), developed in 1939. Finally Weems System of Navigation of Annapolis, Maryland made one in 1965 (no picture). The gyro's were all air driven. Nicol�s --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To unsubscribe, email NavList-unsubscribe@fer3.com -~----------~----~----~----~------~----~------~--~---
