Q4. Following are the details of rotor oſ ship is rotating in anti-dockwise direction
when viewed from the rear (stern) of the ship.
Mass of the rotor = 3000 kg RPM – 2500 Radius of gyration = 0.5 m Determine the
gyroscopic couple and discuss its effect when (1) When the ship is steering to right
through a curve of 100m at a speed of 25km Nr. (2) Ship is pitching 60 above and
below the normal position with a simple harmonic motion of time period 30
seconds and the bow (fore end) is descending down with its maximum velocity (3)
Ship is rolling and its angular velocity is 0.05 rad/sec antidockwise when viewed
from stern (rearend).
Answers
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When the rotor rotates in the anticlockwise direction, when viewed from the stern and the ship is steering to the left, then the effect of reactive gyroscopic couple will be to lower the bow and raise the stern.
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When the rotor rotates in the anticlockwise direction, when viewed from the stern and the ship is steering to the left, then the effect of reactive gyroscopic couple will be to lower the bow and raise the stern.
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