Sperry
Elmer Sperry
Sperry
Gyrocompass is a mechanical device that determines direction. It is used in navigating all major commercial and naval ships, and some aircraft and land vehicles. A gyrocompass is more accurate than a magnetic compass, which relies on the earth's magnetic field to indicate magnetic north. A gyrocompass points to true north, or geographic north. It is not affected by magnetic forces or by the rolling and pitching of the vehicle. (http://reference.howstuffworks.com/gyrocompass-encyclopedia.html) Here is a picture: http://www.navis.gr/navaids/images/gyro2.jpg
Gyrocompass.
It is the opposite of normal damping (oscillation decreases), so in negative damping to get even bigger oscillation.
The amplitude of resonant oscillations can be reduced by damping.Light damping reduces oscillations slowly.Heavy damping reduces oscillations quickly.Critical damping stops the oscillation within one cycle.The graph above shows light damping.
critical damping is when the amount of damping is large enough for the system to return toequilibrium as fast as possible without performing oscillations. Hope thatHELPED
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Geometric damping is also called radiation damping. It is defined as energy radiation into a surrounding medium. Damping is defined as energy dissipation property of structures and materials that are put through time-variable loading.
In the damping level the level view and vertical spindle are crossed together...
The larger the surface area, the larger the damping of an oscillation