• 대한조선학회지
• /
• 제50권3호
• /
• pp.17-21
• /
• 2013

• 대한조선학회논문집
• /
• 제51권1호
• /
• pp.16-25
• /
• 2014

To develop a sailing yacht successfully, systematic engineering information is required including technologies from various companies and know-how about sailing yacht. The engineering information about sailing yacht has a complex and extensive structure. Therefore, a robust and high-level of management system is needed to manage the information. In this paper, we design and propose Generic-YWBS (Generic-Yacht Work Breakdown Structure), a work breakdown structure for sailing yachts. The Generic-YWBS is aimed at constructing sailing yachts and contains contents about product- and process-oriented information of sailing yachts. In addition, the Generic-YWBS plays an important role in managing the engineering information as a basic schema of database and system architecture. The Generic-YWBS is derived from fundamental WBS design processes and various rules about sailing yachts, for example, ISAF (International Sailing Federation) equipment rule and IRC rating rule, and a generic structure concept is applied for flexibility. The Generic-YWBS is applicable for various purposes. We designed a detailed code system in order to apply the Generic-YWBS to contents management system. The series of activities are realized through a web-based RIA(Rich Internet Application) program. This program manages the YWBS structure in an XML schema, and the Generic-YWBS management application offers a customizing function to be adapted in the field.

• 해양환경안전학회지
• /
• 제17권4호
• /
• pp.323-329
• /
• 2011

본 연구는 최대의 효과를 달성하기 위하여 정수 계획법을 이용하여 주어진 자연조건하에서 여러 대안 후보 입지 중 최적의 요트 계류장을 결정 하기위한 문제이다. 목포시 인근의 4개의 요트 계류장 후보지 중 최적의 후보지를 선정하기 위하여 21개의 요소들이 각각의 후보지들에 대하여 분석된다. 총 21개 요소들 중 개발 기간과 초기 투자비용은 다음 요소들에 비해서 1.5배의 가중치를 갖는다. 가중치 선형모델 분석 결과 네 곳의 후보지중 평화광장 수역이 가장 합리적인 장소로 선정되었다. 본 논문에서 소개된 모델은 지금까지 요트 계류장 선정 시 적용된 적이 없는 새로운 방법이다. 본 논문은 가장 합리적인 위치를 결정하는데 공헌할 뿐만 아니라 마리나 관련된 다른 분야에도 응용 적용가능하다.

• 대한조선학회논문집
• /
• 제43권4호
• /
• pp.431-439
• /
• 2006

Due to the limitation of size of the test section, blockage effects could not be avoided in the model test of yacht sails for common wind tunnels. In this paper, a numerical analysis is performed to investigate the blockage effects on the lift and drag forces measured from wind tunnel experiments for a 30 feet sloop yacht sail. Complex airflows around the jib and main sails including three-dimensional flow separations are calculated for various close-hauled conditions. It is found that the blockage of a wind tunnel changes the flow separation and consequently the lift and drag forces of the sails, especially the main sail, reduce and increase, respectively, due to the blockage effects.

• 대한조선학회논문집
• /
• 제48권4호
• /
• pp.308-316
• /
• 2011

Although a yacht sails operate with large displacement due to very thin thickness, many studies for flow around yacht sails have not considered the sail deformation. The sail deformation not only caused a change in the center of effect(CE) on the sail but also a change in the thrust of the sail. The change of the CE and thrust affects the center of lateral resistance(CLR) and side forces of the hull, and the balance of the yacht. These changes affect the motion of the yacht which changes the velocity of the yacht. Thus, when analyzing the flow around yacht sails, the sail deformation should be considered. In the present study, fluid-structure-interaction(FSI) analysis of a two dimensional section of yacht sails was performed to consider the effects of sail deformation on the lift and drag performance. FSI and moving mesh methods were studied. Computational methods were verified using benchmark test cases such as the flow around horizontal and vertical cantilever beams. Shape deformation, pressure distribution, lift forces and separation flow were compared for both rigid and deformable sail.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2013년도 춘계학술대회
• /
• pp.8-9
• /
• 2013

본 연구는 세계 해양레저시장 20% 달성을 목표로 하고 있는 해양레저장비산업의 비전 및 핵심과제 달성을 위하여 해양레저선진국의 산업현황 및 해양레저시장의 동향 및 현황을 분석하고 산업의 경쟁력 확보를 위한 방안을 다음과 같이 제시하였다. 첫째, 국내 보급형 레저선박을 개발하여 증가하고 있는 국내 수요에 대응하여야 하며, 둘째, 국내 우수의 IT 기술을 활용한 IT기반 해양레저장비를 개발하여 국외 시장 진출 및 조선기자재 산업으로의 파급이 필요하다. 셋째, 해외시장 개척을 위한 고급형 모델 및 슈퍼요트와 관련된 기술을 개발하여 고부가가치 수요시장을 공략하여야 하고 넷째, 국내 실정에 맞는 마리나 모델을 개발하여 이미지 개선 및 국내 외 경쟁력 확보가 필요하다. 마지막으로 해양레저산업은 수요창출을 위한 공조체제가 반드시 필요하므로 해양레저문화의 발전이 반드시 병행되어야 한다. 해양레저산업은 경제동향 및 트렌드에 민감한 시장으로 관련된 기술개발과 시장을 둘러싼 국가 간 경쟁의 적극적인 대응마련과 단계적 전략 마련에 대한 지속적인 연구가 필요하다.

• 대한조선학회지
• /
• 제43권2호
• /
• pp.23-34
• /
• 2006

• 한국전산유체공학회지
• /
• 제19권3호
• /
• pp.1-7
• /
• 2014

One of the most important factors in sailing yacht design is an accurate velocity prediction. Velocity prediction programs (VPPs) are widely used to predict velocity of sailing yachts. VPPs, which are primarily based on experimental data and experience of long years, suffer limitations applied in realistic conditions. Thus, in the present study, a high fidelity velocity prediction method using the computational fluid dynamics (CFD) is proposed. Using the developed method, velocity and motion of a 30 feet sloop yacht, which was developed by Korea Research Institute of Ship and Ocean (KRISO) and termed KORDY30, were predicted in upwind sailing condition.

• 대한조선학회논문집
• /
• 제47권3호
• /
• pp.321-327
• /
• 2010

During sailing by wind-driven thrust on the sail, a catamaran sailing yacht generates leeway and heeling. For estimating resistance and moment prediction of a real ship by changing of running attitude, a model test of the ship has to be carried out. This study aims at establishing experimental techniques for a catamaran sailing yacht by changed attitude during running direction. Through the model test, drag and side force of the real ship are predicted. Also through experiment, rolling and yawing moments were considered.

• 한국해양공학회지
• /
• 제18권4호
• /
• pp.71-76
• /
• 2004

A Study of the traditional Korean fishing boat is based on a report on an investigation of the Korean fishing boats, conducted in 1921. The report was completed in 1927 with the conclusion of the Southern Sea region and West Sea region studies, which included the investigation oj the entire region. It was a very thorough and scientific investigation of Korean fishing boats, which has been published in three volumes. Based on this report, this paper surveys the characteristics and the hull form of the traditional Korean fishing boats. As a result, we find ${\cdot}out$ that the hull form of the traditional Korean fishing boat is very similar to that of modern sailing boat. Thus, it is a good candidate for the development of the modern sailing boats for the Korean Sea.