A treatise on gyrostatics and rotational motion . alone affects the period of the vessel. INTRODUCTORY .37 Friction is applied to resist the motion of the frame of the gyrostat in itsbearings, 6 never becomes greater than 45°, and, further, the phase difference is made less than 90°. The oscillations of the ship, and especially anyrapid vibrations that may grow up, are now damped; the energy of therolling motion is converted into heat at the bearings. In applying this second mode of using a gyrostat to steady a ship in aeross-sea, Schlick arranges a brake pulley in the line of the bearings onw
A treatise on gyrostatics and rotational motion . alone affects the period of the vessel. INTRODUCTORY .37 Friction is applied to resist the motion of the frame of the gyrostat in itsbearings, 6 never becomes greater than 45°, and, further, the phase difference is made less than 90°. The oscillations of the ship, and especially anyrapid vibrations that may grow up, are now damped; the energy of therolling motion is converted into heat at the bearings. In applying this second mode of using a gyrostat to steady a ship in aeross-sea, Schlick arranges a brake pulley in the line of the bearings onwhich the frame of the gyrostat turns, and friction of a graded amount isapplied by means of a special device. With this second mode of operatingthe gyrostat the ship is forcibly prevented from rolling. In the trials ofthe device it was found that, with the control in operation, the angle of rollof the ship did not exceed 1° in a cross-sea which produced a total swingof 35° when the control was out of action. It is interesting to notice that,. Mutor-gyrostat fitted up to demonstrate Schlick s method of steadying a ship in a cross-sea. contrary to the opinions which were expressed when the device was firstsuggested, the preventing of the rolling of a ship does not result in thewaves breaking over her; a ship thus controlled is a dry ship. In the figure is shown a motor-gyrostat fitted up in a skeleton framerepresenting a ship. The frame is mounted on two bearings arranged intwo wooden uprights, and ma} be oscillated on these bearings so as toimitate the rolling of a ship in a cross-sea. The frame of the gyrostatis mounted on two bearings placed athwart the ship frame, and a weightis attached to the outside of the case in a position in line with the axis ofthe flywheel. The centre of gravity of the gyrostat is in line with thebearings. A clip device is provided which allows the gyrostat to be rapidlyclamped to the skeleton frame, and provision is made whereby a gradedamount of
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