Gyrocompass | Wikipedia audio article
Channel: wikipedia tts
Date: 16/01/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Gyrocompass


00:01:22 1 Operation
00:05:06 2 Mathematical model
00:06:36 2.1 First time-dependent rotation
00:10:00 2.2 Second and third fixed rotations
00:14:27 2.3 Constant translation
00:17:19 2.4 Fourth time-dependent rotation
00:19:24 2.5 Last time-dependent rotation
00:20:58 2.6 Dynamics of the system
00:21:40 2.6.1 Particular case: the poles
00:42:15 2.6.2 The general and physically relevant case
00:43:00 3 History
00:48:11 4 Errors
00:51:25 5 Patents
00:52:21 6 See also
00:52:46 7 Notes



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SUMMARY
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A gyrocompass is a type of non-magnetic compass which is based on a fast-spinning disc and the rotation of the Earth (or another planetary body if used elsewhere in the universe) to find geographical direction automatically. The use of a gyrocompass is one of the seven fundamental ways to determine the heading of a vehicle. Although one important component of a gyrocompass is a gyroscope, these are not the same devices; a gyrocompass is built to use the effect of gyroscopic precession, which is a distinctive aspect of the general gyroscopic effect.  Gyrocompasses are widely used for navigation on ships, because they have two significant advantages over magnetic compasses:
they find true north as determined by the axis of the Earth's rotation, which is different from, and navigationally more useful than,  magnetic north, and
they are unaffected by ferromagnetic materials, such as in a ship's steel hull, which distort the magnetic field.Aircraft commonly use gyroscopic instruments (but not a gyrocompass) for navigation and attitude monitoring; for details, see Flight instruments and Gyroscopic autopilot.