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Effect of Manufacturing Accuracy of Flexible Propeller on the Open Water Performance

유연 프로펠러의 제작 정도가 단독성능에 미치는 영향

  • Lee, Kun-Hwa (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Jang, Hyun-Gil (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Lee, Chang-Sup (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Nho, In-Sik (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Lee, Sang-Gab (Division of Naval Architecture & Ocean System Engineering, Korea Maritime and Ocean University) ;
  • Hyun, Beom-Soo (Division of Naval Architecture & Ocean System Engineering, Korea Maritime and Ocean University)
  • 이건화 (충남대학교 선박해양공학과) ;
  • 장현길 (충남대학교 선박해양공학과) ;
  • 이창섭 (충남대학교 선박해양공학과) ;
  • 노인식 (충남대학교 선박해양공학과) ;
  • 이상갑 (한국해양대학교 조선해양시스템공학부) ;
  • 현범수 (한국해양대학교 조선해양시스템공학부)
  • Received : 2012.11.28
  • Accepted : 2013.09.26
  • Published : 2013.10.20

Abstract

The blades of flexible propellers are formed by overlaying and adhering many layers of thin glass-fiber fabric sheets, are compressed and dried in the rigid mold. The current manufacturing process can not avoid the rather irregular deformation of the blades composed of non-isotropic non-uniform fabric structures, and inevitably introduces the different shape-forming errors between blades. In this paper, several flexible model propellers are precisely measured with three-dimensional optical instrument and compared with the original design geometry. The model propellers with the as-measured geometry are evaluated with the lifting-surface-theory-based propeller analysis code. The open-water performance are presented and discussed. The importance of the manufacturing accuracy is addressed to be able to apply the flexible propellers for propulsion of marine vehicles.

Keywords

References

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