doi:US3928754 AEDLUND; HERMAN ALLAN FRIEDRICHUSUS3928754 * 1974年5月3日 1975年12月23日 Edlund Herman Allan Friedrich Device for calculating the resonant rolling period of a shipUS3928754 * May 3, 1974 Dec 23, 1975 Edlund Herman Allan Friedrich Device for calculating the resonant rolling period...
Mokoia, I wished to determine, if possible, the rolling angle of the ship by some means, other than that of the inclinometer, which the captain allowed me to inspect from time to time. As the period of rolling was long, it seemed quite possible that an ordinary kodak camera might be ...
The period of the roll is half the natural rolling period which coincides with a large phase angle and maximum roll always occurs when the ship is pitching down i.e. bow is down. Effects of Parametric Roll Heavy stresses in ship structure especially in fore and aft parts Extreme stresses on...
The period of a ship varies directly as her radius of gyration, and inversely as the -square root of her metacentric height. Hence the period may be increased by increasing the moment of inertia of the ship, or by decreasing the meta centric height. In armoured war-vessels the moment of ...
Mortlock, who was concussed midway through the second period in arolling tackleon Gear, agreed the turning point in the match came when All Blacks prop Carl Hayman was sin-binned in the 62nd minute, allowing the Wallabies to take the lead with two tries. ...
2.To move or push along on wheels or rollers:rolled the plane out of the hangar. 3.To impel or send onward in a steady, swelling motion:The sea rolls its waves onto the sand. 4.To impart a swaying, rocking motion to:Heavy seas rolled the ship. ...
Sometimes in relatively good weather, a ship will pitch or roll excessively. This is caused primarily by the synchronization of the relutive period of the vessel's natural period for pitching or rolling. This objectionable movement can be corrected, usually, by simply changing course. If course ...
Homoclinic connections and period doublings of a ship advancing in quartering waves The large‐amplitude motions of a ship running in waves are analyzed with a mathematical model reduced to a system of eight coupled nonlinear ordinary diff... K.,J.,Spyrou - 《Chaos》 被引量: 32发表: 1996年...
Your vessel is listing 4° to port and has a short rolling period. There is loose firefighting water in the hull. The ship is trimmed down by the head with one foot of freeboard at the bow. Which action should you take FIRST? A. Press up the slack NO.1 starboard double bottom tank...
(ISO). The longevity of the bearings is understood to mean the rated service period expressed in the number of revolutions or the number of hours of operation for which not less than 90 percent of a given group of bearings must operate under identical conditions without the appearance of any...