300 G.T.型練習船の波浪中実船実験

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タイトル別名
  • A Sea Trial of 300 G.T. Training Ship
  • 300G.T.カタレンシュウセン ノ ハロウチュウ ジッセン ジッケン

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The experimental investigation on the fluctuations of propeller loads induced by wave and automatic steering yawing had been made on the 300 G.T. training ship. The sea condition was rather heavy for the objective ship and the sluggish yawing with the long period of 50sec was observed throughout the trial. The obtained results from MEM spectrum analysis are as follows. 1) The thrust and torque fluctuations of propeller shaft induced by automatic steering yawing are sometimes larger than those by wave, especilly in head sea condition. 2) The significant fluctuations of them are attained to the magnititude of 15〜20% compared to still water running. 3) The gain character of gyro compass is insufficient for yawing devive in seaway of short wave period.

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