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http://dx.doi.org/10.7837/kosomes.2021.27.7.1059

A Study on the Shapes of Twin Curvy Sail for Unmanned Sail Drone  

Ryu, In-Ho (Graduate School of Mokpo National Maritime University)
Kim, Bu-Gi (Division of Mechatronics Engineering, Mokpo National Maritime University)
Yang, Changjo (Division of Marine Engineering System, Mokpo National Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.27, no.7, 2021 , pp. 1059-1066 More about this Journal
Abstract
In Korea, the importance of marine activities is great, and automatic weather observation facilities are operating on land to investigate abnormal weather phenomena caused by industrialization; however, the number of facilities at sea is insufficient. Marine survey ships are operated to establish marine safety information, but there are many places where marine survey ships are difficult to access and operating costs are high. Therefore, a small, unmanned vessel capable of marine surveys must be developed. The sail has a significant impact on the sailing performance, so much research has been conducted. In this study, the camber effect, which is a design variable of the twin curvy sail known to have higher aerodynamic performance than existing airfoil shapes, was investigated. Flow analysis results for five cases with different camber sizes show that the lift coefficient is highest when the camber size is 9%. Curvy twin sails had the highest lift coefficient at an angle of attack of 23° because of the interaction of the port and starboard sails. The port sail had the highest lift coef icient at an angle of attack of 20°, and the starboard sail had the lowest lift coef icient at an angle of attack of 15°. In addition, the curvy twin sail had a higher lift coefficient than NACA 0018 at all angles of attack.
Keywords
Twin curvy sail; Camber; Angle of attack; Lift coef icient; Drag coefficient; Sail drone;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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