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Keywords = static kite sail

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23 pages, 3687 KiB  
Article
Wind-Assisted Ship Propulsion of a Series 60 Ship Using a Static Kite Sail
by Wayne Formosa, Tonio Sant, Claire De Marco Muscat-Fenech and Massimo Figari
J. Mar. Sci. Eng. 2023, 11(1), 117; https://doi.org/10.3390/jmse11010117 - 5 Jan 2023
Cited by 9 | Viewed by 4330
Abstract
Following the International Maritime Organization’s goal to reduce greenhouse gas emissions, the interest in the application of wind-assisted ship propulsion (WASP) in maritime transportation is on the rise. Although a variety of WASP systems exist, the application in maritime shipping is still limited, [...] Read more.
Following the International Maritime Organization’s goal to reduce greenhouse gas emissions, the interest in the application of wind-assisted ship propulsion (WASP) in maritime transportation is on the rise. Although a variety of WASP systems exist, the application in maritime shipping is still limited, especially in the case of kite sails. This paper presents a numerical model to carry out a theoretical assessment of the influence of the kite planform area and wind speed on the aerodynamic performance of a kite sail providing propulsive assistance to a 75 m long ship having a Series 60 hull. A static kite sail is assumed, on which a tail wind generates a thrust force to pull the vessel via a tether. While the mass of the kite is neglected, that of the tether is accounted for. A model is implemented for the tensioned tether having a catenary profile. The results generally show a positive correlation between the aerodynamic forces and the kite parameters. As expected, the output parameter values corresponding to the optimal angle of attack for a range of vessel speeds are also found to increase with an increasing relative wind speed. It is concluded that a static 320 m2 kite sail would be sufficient to meet the entire propulsion requirements of the vessel under consideration under appropriate wind conditions. Full article
(This article belongs to the Topic Advances in Wind Energy Technology)
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26 pages, 6032 KiB  
Article
Benchmark Sea Trials on a 6-Meter Boat Powered by Kite
by Kostia Roncin, Morgan Behrel, Paul Iachkine and Jean-Baptiste Leroux
Appl. Sci. 2020, 10(18), 6148; https://doi.org/10.3390/app10186148 - 4 Sep 2020
Cited by 3 | Viewed by 3759
Abstract
This paper presents sea trials on a 6-m boat specifically designed for kite propulsion. The kite control was automatic or manual, dynamic or static, depending on the point of sailing. The measurement system recorded boat motion and load generated by the kite. A [...] Read more.
This paper presents sea trials on a 6-m boat specifically designed for kite propulsion. The kite control was automatic or manual, dynamic or static, depending on the point of sailing. The measurement system recorded boat motion and load generated by the kite. A particular attention was paid to wind measurement with several fixed and mobile locations directly on the kiteboat or in the vicinity. A high resolution weather modelling showed that a classical power law, describing the wind gradient, was not satisfactory to get the wind at kite location. 5-min measurement phases were systematically recorded. In the end, 101 runs were carried out. Data were processed with the phase-averaging method in order to produce reliable and accurate results. Full article
(This article belongs to the Special Issue Ship Energy Systems)
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