NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Zeppelin sextants and altitude corrections
From: David Pike
Date: 2025 Nov 3, 08:50 -0800
From: David Pike
Date: 2025 Nov 3, 08:50 -0800
Well... , I've used radar altimeters, radio altimeters, and pressure altimeters, but I'd never heard of a sonic altimeter. For those in a similar position, read this: https://archive.org/details/nasa_techdoc_19930081403/page/n123/mode/2up . Presumably the arrival of the radio altimeter made the sonic altimeter obsolete. DaveP
