NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Gyroscope vs. Fluxgate compass
From: Chuck Taylor
Date: 2002 Feb 1, 11:45 US/PACIFIC
From: Chuck Taylor
Date: 2002 Feb 1, 11:45 US/PACIFIC
Brian Whatcott mentioned gyroscopes. When I served in US Navy ships a few decades ago, we used gyroscopes to steer by, with a compass as backup. One advantage was that the gyro always pointed to true north. Several gyro repeaters were slaved off of one master located in the bowels of the ship. That way the gyro repeaters on the bridge wings always agreed with gyro repeater at the helm. The gyro itself was massive in size and I'm sure it was quite expensive. When I learned to fly small airplanes, they all had gyros. If I recall correctly, power came from a simple air turbine, which would spin up when you started the engine. Part of the check list for takeoff was to align the heading of the gyro with the direction of the runway. Once aligned, it stayed aligned for the duration of the flight. The cost of many things technological has come down quite drastically over the years. Has anyone heard of an attempt to design/build a gyroscope suitable for steering a relatively small boat for a reasonable price (maybe a few hundred US dollars)? Is such a thing feasible? Chuck Taylor 47d 55.161' N 122d 11.176' W