タイトル無し
スポンサーリンク
概要
- 論文の詳細を見る
A new type torsionmeter applying digital technique has been developed for the measurement of propeller shaft torque in ships.<BR>The accuracy was calibrated experimentally by applying various known twisting moments on the shaft, and it was found better than±0.12%.<BR>The torsionmeter was connected between an engine and a water-brake-dynamometer, and the transmitted torque <I>T<SUB>S</SUB></I>on the torsionmeter and the absorbed torque <I>T<SUB>B</SUB></I> by the water-brake-dynamometer were compared. At that time, it was found that the error of <I>T<SUB>S</SUB></I> due to the change of temperature at the shaft was approximately 0.4%, and the error of <I>T<SUB>B</SUB></I> due to the loss torque in the water-brake-dynamometer was approximately 1%.<BR>In order to confirm the reliability of the instrument for practical use, this measuring device was installed on an intermediate shaft connected between the main engine and the propeller shaft of the cargo vessel. On the trial trip a good agreement could be confirmed between the measurement and the estimated value that could be estimated from the cruising condition. Furthermore, torque fluctuation due to the surging phenomena of the vessel could be clearly observed on the measurement.
- 公益社団法人 日本マリンエンジニアリング学会の論文