Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Uncertainty Assessment of Outdoor Free-Running Model Tests for Evaluating Ship Maneuverability

선박 조종성능 평가를 위한 옥외 자유항주모형시험의 불확실성 해석

  • Park, Jongyeol (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Seo, Jeonghwa (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Lee, Taeil (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Lee, Daehan (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Park, Gyukpo (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Yoon, Hyeon Kyu (Department of Industrial Engineering and Naval Architecture, Changwon National University) ;
  • Rhee, Shin Hyung (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • 박종열 (서울대학교 조선해양공학과) ;
  • 서정화 (충남대학교 선박해양공학과) ;
  • 이태일 (서울대학교 조선해양공학과) ;
  • 이대한 (서울대학교 조선해양공학과) ;
  • 박격포 (서울대학교 조선해양공학과) ;
  • 윤현규 (창원대학교 산업시스템 및 조선해양 융합공학부) ;
  • 이신형 (서울대학교 조선해양공학과)
  • Received : 2020.01.29
  • Accepted : 2020.06.05
  • Published : 2020.10.20
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Abstract

An outdoor free-running model test system was designed for assessing ship maneuverability with test uncertainty. The test model was a surface combatant of tumblehome hull geometry. The straight forward tests were conducted first to obtain the relationship between the propeller revolution rate and advance speed. During the outdoor tests, the propeller revolution rate to achieve a certain Froude number condition was higher than that in the indoor free-running model tests. Turning circle and zigzag tests for evaluating ship maneuverability criteria were carried out at the propeller revolution rate determined by the straight forward test results. The random and systematic standard uncertainties of maneuvering criteria were obtained by repeated tests and comparison with the indoor free-running model test results, respectively. The test uncertainty was largely dominated by the systematic standard uncertainty, while the random standard uncertainty was small with good repeatability.

Keywords

References

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