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http://dx.doi.org/10.5762/KAIS.2020.21.7.391

A Basic Study for the Application of the Shafting System for the Contra-Rotating Propeller  

Shin, Sang-Hoon (Department of Aero Mechanical Engineering, Kyungwoon University)
Lee, Seung-Min (Department of Aero Mechanical Engineering, Kyungwoon University)
Rim, Chae Whan (Department of Aero Mechanical Engineering, Kyungwoon University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.7, 2020 , pp. 391-398 More about this Journal
Abstract
If the lost energy produced by a propeller can be partially recovered, the propulsive efficiency can be increased, and the fuel consumption reduced. The devices installed for this purpose are called Energy Saving Devices, of which the Contra-Rotating Propeller system is one of the most effective devices. The first problem to be solved to install the Contra-Rotating Propeller system on a large ship is that the mean pressure generated in the journal bearing needs to meet the design criteria of the classifications. In Korea, however, the practical use is being delayed because it cannot overcome this step. The next step is to lower local pressure to increase the reliability. In this study, to solve the mean pressure problem as the first step of practical use, a product carrier with a short stern shape was selected to reduce the weight of the shafting system, and a suitable shafting-system design plan was proposed. Shaft analysis confirmed that the mean pressure of 0.8 MPa (8 bar), which is a design criterion of the classifications for a journal bearing lining material (white metal), was satisfied. In addition, the necessity of reducing the local pressure was also confirmed.
Keywords
Energy Saving Devices; Contra-Rotating Propeller; Mean Pressure; Local Pressure; Shaft Analysis; White Metal;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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