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최민선,박진수,Choi Min-Seon,Park Jin-Soo 해양환경안전학회 2005 해양환경안전학회지 Vol.11 No.2
미국은 국가안보와 해운산업 국제 경쟁력 강화를 위하여 미 연방상선대학과 같은 4년제 대학교육으로 상선사관을 양성하고 있다. 미국의 해기사 양성제도는 크게 연방정부에서 지원 운영하는 Academy (U. S. Merchant Marine Academy와 U. S. Coast Guard Academy)와 각 주(State)에서 지원 운영하는 캘리포니아해양대학교 등 6개 주립대학의 정규 4년제 교육을 통하여 이루어진다. 본 연구에서는 미국 해기사 교육기관 중 교육중심의 캘리포니아 해양대학의 교육제도, 실습방법, 실습선 운영형태를 파악하여 우리나라 해기사 교육제도에 도움이 되게 하고자 한다. This paper presents the maritime education and training at CMA. There are two kinds of Federal Maritime Academies, i.e. U. S. Merchant Marine Academy (USMMA) and U. S. Coast Guard Academy, which are supported by federal government and six State Maritime Academies operated by each state. CMA is a unique campus of the California State University(CSU). A specialized education combining classroom instruction, hands-on experience and professional development prepare students for a successful career in international business and logistics, maritime policy, engineering, technology or in the maritime and transportation industries. All students of CMA, under licensed faculty supervision, learn and train aboard the Training Ship Golden Bear during a two-month training cruise in their first year at CMA. Second-year students participate in a land-based cooperative, or sail on a commercial cruise or the Training Ship GOLDEN BEAR depending on their major. Third-year maritime licensing option students take a final cruise on the training ship, while other students participate in an additional land-based cooperative. In their senior year, students take license exams to complete graduation requirements.
시간해상도 PIV를 이용한 델타형 날개에서의 와류 유동특성에 관한 연구
최민선,이현,이영호,Choi, Min-Seon,Lee, Hyun,Lee, Young-Ho 한국마린엔지니어링학회 2004 한국마린엔지니어링학회지 Vol.28 No.3
The dominant effect of the interaction between vortices, generated by the addition of the Leading Edge Extension(LEX) in front of the wing, was well observed in this experiment. In this study, systematic approach by PIV experimental method within a circulating water channel was adopted to study the fundamental characteristics of induced vertex generation, development and its breakdown appearing on a delta wing model with or without LEX in terms of four angles of attack($15^{\circ}$, $20^{\circ}$, $25^{\circ}$, $30^{\circ}$) and six measuring sections(30%, 40%, 50%, 60%, 70%, 80%) of chord length. Distributions of time-averaged velocity vectors and vortices over the delta wing model were compared along the chord length direction. High-speed CCD camera which made it possible to acquire serial images is able to get the detailed information about the flow characteristics occurred on the delta wing. Especially quantitative comparison of the maximum vorticity featuring the induced pressure distribution were also conducted to clarity the significance of the LEX existence.