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Dynamic modeling of ships towed by kite

Abstract : A dynamic kite flight can affect ship motions. Ship equations of motion associated with the analytical zero-mass kite model are developed. Aiming a realistic amplitude modeling of the kite excitation, a linear modification of the aerodynamic kite specs with the turning rate of the kite velocity heading is proposed. A good agreement with experimental data is obtained. Equations of motion are solved on a reaching path alternatively with a weak and a strong coupling between the ship and the kite. Differences between the two coupling methods become significant when a harmonic of the kite excitation approaches the natural roll frequency of the ship. For the presented case of study, these critical conditions can be avoided with longer tethers or larger kite trajectories.
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https://hal-ensta-bretagne.archives-ouvertes.fr/hal-01784376
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Submitted on : Thursday, May 3, 2018 - 1:58:19 PM
Last modification on : Wednesday, April 1, 2020 - 1:59:07 AM

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Nedeleg Bigi, Morgann Behrel, Kostia Roncin, Jean-Baptiste Leroux, Alain Nême, et al.. Dynamic modeling of ships towed by kite. La Houille Blanche - Revue internationale de l'eau, EDP Sciences, 2018, 2018 (1), pp.8 - 10. ⟨10.1051/lhb/2018002⟩. ⟨hal-01784376⟩

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