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The Gyroscope Forum |
23 November 2024 23:01
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Welcome to the gyroscope forum. If you have a question about gyroscopes in general,
want to know how they work, or what they can be used for then you can leave your question here for others to answer.
You may also be able to help others by answering some of the questions on the site.
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Question |
| Asked by: |
shazib mehmood |
| Subject: |
advantages |
| Question: |
what are the advantages and disadvantages of gyroscopic navigational instruments over non gyro scpic navigational instruments |
| Date: |
18 January 2005
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Answers (Ordered by Date)
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| Answer: |
Glenn Hawkins - 25/05/2005 02:07:49
| | | Ah… come on ex-Navy. I wouldn’t trust you dating my sister you supper-persistent swab. Just kidding. This is not my area, but I will do the best I can and then you will then be free to espouse you expertise over my limited understanding.
I prefer electronic positioning systems from either space, or land based radar. Let us consider the Automatic Loran for position fixing for instance. You get Automatic route following, Range/bearing to waypoints, speed and course made good, velocity and time-to-go, cross-track error and course offset, Audible and visual alarms and there are electronic position-fixing system stations for safety and efficiency at sea. The position is indicated in Lat/Lon without use of charts or tables. TDs from preselected master-secondary stations can be indicated. The display parameters are marked with an index cursor.
Parameters include cross-track error, waypoint numbers, time-to-go, speed and course. Up to 100 waypoints can be entered by Lat/Lon, TD, or range and bearing from any position. Current Lat/Lon and TDs can be instantly stored as an event position by pressing the SAVE key (20 max). The stored event position may be recalled at any time and easily registered as a waypoint for permanent storage.
Note that position fixing requires incoming data from distant ordinances as in triangulation. The co ordinances can be earth base or satellite base.
But of course there are the stars to guide you. A crude sexton in clear weather at night would do. Still that’s incoming visual.
And then there is the compass, but I would think you’d need to know something of the fluctuations related to area, and still that is incoming data reliant on electro magnetic fields.
A Gyro system however doesn’t require incoming data. It is a self-contained part of a navigational system that will maintain a direction not only to true North, but also to both a latitude and longitude in three-dimensional space from a presetting of your choice.
Which is better, or more advantageous? It depends on your needs.
Glenn,
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