NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Submarine navigation (was Dip-meter again)
From: Lu Abel
Date: 2012 Apr 11, 15:23 -0700
From: Lu Abel
Date: 2012 Apr 11, 15:23 -0700
Gyroscopes align themselves with the earth's polar axis. Inertial Navigation Systems work by measuring either the change in position or, in the case of "strapped-down" gyros the acceleration, as a result of the INS being moved.
While the USS Nautilus's sail under the polar icecap was well publicized in 1958, there were some unpublished and very serious aspects of the mission. One was to chart the region under the polar icecap so future subs could confidently navigate transpolar routes. The other was to
test the INS. Some INS designs can experience "gyro lock up" at the North (or South) Pole. Another part of the Nautilus's mission was to sail directly over the pole and confirm that the US's INS design did not experience this.
From: Greg Rudzinski <gregrudzinski@yahoo.com>
To: NavList@fer3.com
Sent: Tuesday, April 10, 2012 6:51 PM
Subject: [NavList] Re: Submarine navigation (was Dip-meter again)
Informative link on modern sub navigation and SLBM launches.http://www.ssp.navy.mil/about/history_facts_3.shtml
Greg Rudzinski
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------
