Maximising pitch energies of a wave-propelled ASV to increase forward speed
Maximising pitch energies of a wave-propelled ASV to increase forward speed
Pitch-driven, wave-propelled vessels are able to use the energy contained solely within the waves to propel themselves across theoretically unlimited distances. For this type of platform, maximising the energy harnessed from the environment and transferred to the vessel’s pitch motions is important for increasing forward speed. In this paper, a parametric range of hullforms based on a Wigley hull is analysed in terms of the average energy-per-second in the pitch motions and the average energy lost to added resistance. This reveals that there exists a range of hullforms where the energy in the pitch motions can be 1.6 times greater than the energy lost to added resistance. The analysis is repeated over a range of vessel drafts, which reveals that a beam to draft ratio of less than 3 allows a hullform to be designed to achieve this effect. This work indicates that the hullform is a crucial part of the functioning of a wave-propelled vessel, and it can be designed to maximise energy harnessed from the waves. Provided this energy is effectively transferred to the foils, it can lead to an increase in forward speed.
autonomous surface vessel, foil propulsion, hull motions, seakeeping, wave propulsion
Hawkins-Dady, Jamie
e409fcf7-f6d3-45d1-b7aa-3c80f4480140
Taunton, Dominic
10bfbe83-c4c2-49c6-94c0-2de8098c648c
Townsend, Nicholas
3a4b47c5-0e76-4ae0-a086-cf841d610ef0
Hawkins-Dady, Jamie
e409fcf7-f6d3-45d1-b7aa-3c80f4480140
Taunton, Dominic
10bfbe83-c4c2-49c6-94c0-2de8098c648c
Townsend, Nicholas
3a4b47c5-0e76-4ae0-a086-cf841d610ef0
Hawkins-Dady, Jamie, Taunton, Dominic and Townsend, Nicholas
(2023)
Maximising pitch energies of a wave-propelled ASV to increase forward speed.
In OCEANS 2023 - MTS/IEEE U.S. Gulf Coast.
IEEE.
7 pp
.
(doi:10.23919/OCEANS52994.2023.10337369).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Pitch-driven, wave-propelled vessels are able to use the energy contained solely within the waves to propel themselves across theoretically unlimited distances. For this type of platform, maximising the energy harnessed from the environment and transferred to the vessel’s pitch motions is important for increasing forward speed. In this paper, a parametric range of hullforms based on a Wigley hull is analysed in terms of the average energy-per-second in the pitch motions and the average energy lost to added resistance. This reveals that there exists a range of hullforms where the energy in the pitch motions can be 1.6 times greater than the energy lost to added resistance. The analysis is repeated over a range of vessel drafts, which reveals that a beam to draft ratio of less than 3 allows a hullform to be designed to achieve this effect. This work indicates that the hullform is a crucial part of the functioning of a wave-propelled vessel, and it can be designed to maximise energy harnessed from the waves. Provided this energy is effectively transferred to the foils, it can lead to an increase in forward speed.
This record has no associated files available for download.
More information
e-pub ahead of print date: 11 December 2023
Additional Information:
Funding Information:
ACKNOWLEDGMENT The authors would like to thank the Natural Environment Research Council, University of Southampton, and Autonaut Ltd. for providing funding for this work to be completed. In addition, J. H.-D. would like to thank the Office of Naval Research for providing funding for the OCEANS Student Poster Competition, which has enabled him to travel to the conference and present this work.
Funding Information:
The authors would like to thank the Natural Environment Research Council, University of Southampton, and Autonaut Ltd. for providing funding for this work to be completed. In addition, J. H.-D. would like to thank the Office of Naval Research for providing funding for the OCEANS Student Poster Competition, which has enabled him to travel to the conference and present this work.
Venue - Dates:
OCEANS 2023 Gulf Coast, Mississippi Coast Coliseum & Convention Center, Biloxi, United States, 2023-09-25 - 2023-09-28
Keywords:
autonomous surface vessel, foil propulsion, hull motions, seakeeping, wave propulsion
Identifiers
Local EPrints ID: 487681
URI: http://eprints.soton.ac.uk/id/eprint/487681
PURE UUID: 333f5509-fc6b-4ecd-8fed-382840251dee
Catalogue record
Date deposited: 29 Feb 2024 18:30
Last modified: 18 Mar 2024 03:59
Export record
Altmetrics
Contributors
Author:
Jamie Hawkins-Dady
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics