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LiDAR가 탑재된 계류된 부유식 기상 부이의 개념 설계
김정록(Jeongrok Kim),이혜빈(Hyebin Lee),조일형(Il-Hyoung Cho),경남호(Nam-Ho Kyong),부성윤(Sung-Youn Boo) 한국해양공학회 2017 韓國海洋工學會誌 Vol.31 No.5
This paper reports the conceptual design process for a floating metocean data measurement system (FMDMS) for measuring wind information at sea. The FMDMS consists of three circular pontoons, columns, and a deck, which the LiDAR (lighting detection and ranging) is installed on. The dynamics of the mooring lines and motion responses of the FMDMS were analyzed using commercial codes such as WAMIT and OrcaFlex. One design criterion of the developed FMDMS was to maintain the motion responses as small as possible to enhance the LiDARs accuracy. Starting with the preliminary design parameters such as the FMDMSs principal dimensions, weight, and important parameters of mooring system,we checked whether the FMDMS met the design requirements at each design stage, and then made modifications as necessary. The developed FMDMS showed a large pitch behavior for a small heave motion.
60m급 파력발전 실해역 시험장 선정을 위한 제주도 차귀도 해역의 해저 지층 탐사
김한수(Hansoo Kim),김정록(Jeongrok Kim),조일형(Il-Hyoung Cho),팽동국(Dong-Guk Paeng),최종수(Jong-Su Choi) 한국해양공학회 2017 韓國海洋工學會誌 Vol.31 No.4
The purpose of this study was to investigate the sea floor using a seismic profiler in the northern part of Chagwi-do of Jeju Island in order to select the optimal location for the 60-m-class berth of a sea test bed for wave energy converters and provide basic environmental data for designing a suction anchor. The echo types of the seismic profiles were classified based on the study of Kim et al. (2016a), and the location for installing the suction anchor was selected based on a sediment thickness of more than 10 m. The physical properties of the surface sediments were determined by analyzing the sediment samples obtained from 16 grab sample points. Based on the investigation and analysis, we proposed a survey area in the North-Eastern sea as an optimum location for the 60-m-class berth where the suction anchor could be installed.