Estimation of Torque Used for Determining the Pull-up Length of Keyless Propeller

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概要

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• In order to prevent keyless propellers from slipping, it is necessary to estimate torque transmitted from shaft to propeller as accurately as possible, taking the major parameters of the ship, such as main engine power and displacement into account. Experience of slip accidents has shown that it is necessary to consider the crash astern condition in the estimation of torque used for determining pull-up length of keyless propellers. This paper describes how to estimate the increasing rate of torque in crash astern condition compared to that in steady condition through theoretical analysis and measured data. As a result, the authors found out that the increasing rate of torque can be approximately represented as a function of propeller diameter.

• 財団法人日本海事協会の論文

著者

• Song Yuzhong

  Research Institute

• Iwakiri Hiroshi

  Sasebo Branch Office

• Song Yuzhong

  Research Institute Research Center

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