로터세일 탑재선의 구조 응답을 고려한 최적 개조 설계 연구 = A Study on Optimal Retrofit Design Considering Structural Response of Rotor Sail-Equipped Ships

다국어 초록 (Multilingual Abstract)

With the tightening of greenhouse gas reduction regulations by the International Maritime Organization (IMO), improving fuel efficiency and reducing carbon emissions have become essential tasks in the maritime industry. As a result, the Wind-Assisted Propulsion System (WAPS) has emerged as an Eco-friendly technology that can significantly enhance fuel savings. Among various WAPS concepts, the Rotor Sail, which utilizes the Magnus effect to generate additional thrust, is recognized as a highly efficient auxiliary propulsion device. This study investigates the structural response of a medium-sized liquid cargo vessel when equipped with Rotor Sails, focusing on the stress distribution of the hull structure under static load conditions.
Finite Element Analysis(FEA) was performed considering wind, inertia, green sea, and gyroscopic loads to evaluate the structural integrity for both midship and side-deck installation scenarios.　The results showed that the maximum stress was approximately 80% of the material yield strength, indicating sufficient structural safety. Furthermore, the results confirmed that structural reinforcement through thickness modification of the stiffeners could achieve both weight reduction and enhanced stability. This study presents a structural verification and retrofit design procedure for Rotor Sail-equipped ships, which is expected to contribute to the advancement and standardization of retrofit technologies for wind-assisted propulsion systems in existing vessels.