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Design principles for thrust enhancement in shape-changing AUVs

Design principles for thrust enhancement in shape-changing AUVs
Design principles for thrust enhancement in shape-changing AUVs
Marine operations are in growing demand of robust, autonomous and highly manoeuvrable unmanned systems in order to foster the degree of automation in the offshore and maritime sectors. One way to address these needs is to adopt innovative design principles where thrust-augmenting strategies are
coupled with structurally-compliant technologies. With this purpose in mind, we have studied the capability of aquatic pulsed-jetting bodies to boost thrust generation by altering their external body-shape. Given the complex hydroelastic response of these kind of vehicles to their actuation, we devise an analytical model to effectively predict their unsteady dynamics for design and control purposes. This model is validated against the speed and mass variation from recent experiments and provides an accurate estimate of the contribution of external added-mass variation to total jetting thrust. These results pave the way to our preliminary development of a new kind of soft-bodied aquatic vehicle capable of fully exploiting the benefit from added-mass variation effects for the purpose of sustained self-propulsion.
Giorgio-Serchi, Francesco
8571dc14-19c1-4ed1-8080-d380736a6ffa
Weymouth, Gabriel
b0c85fda-dfed-44da-8cc4-9e0cc88e2ca0
Giorgio-Serchi, Francesco
8571dc14-19c1-4ed1-8080-d380736a6ffa
Weymouth, Gabriel
b0c85fda-dfed-44da-8cc4-9e0cc88e2ca0

Giorgio-Serchi, Francesco and Weymouth, Gabriel (2017) Design principles for thrust enhancement in shape-changing AUVs. High Speed Marine Vehicles 2017, Naples, Italy. 25 - 27 Oct 2017. 7 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Marine operations are in growing demand of robust, autonomous and highly manoeuvrable unmanned systems in order to foster the degree of automation in the offshore and maritime sectors. One way to address these needs is to adopt innovative design principles where thrust-augmenting strategies are
coupled with structurally-compliant technologies. With this purpose in mind, we have studied the capability of aquatic pulsed-jetting bodies to boost thrust generation by altering their external body-shape. Given the complex hydroelastic response of these kind of vehicles to their actuation, we devise an analytical model to effectively predict their unsteady dynamics for design and control purposes. This model is validated against the speed and mass variation from recent experiments and provides an accurate estimate of the contribution of external added-mass variation to total jetting thrust. These results pave the way to our preliminary development of a new kind of soft-bodied aquatic vehicle capable of fully exploiting the benefit from added-mass variation effects for the purpose of sustained self-propulsion.

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Published date: October 2017
Venue - Dates: High Speed Marine Vehicles 2017, Naples, Italy, 2017-10-25 - 2017-10-27

Identifiers

Local EPrints ID: 414142
URI: http://eprints.soton.ac.uk/id/eprint/414142
PURE UUID: 0ca23288-92b3-41f5-b1b1-702c88c03b31
ORCID for Francesco Giorgio-Serchi: ORCID iD orcid.org/0000-0002-5090-9007
ORCID for Gabriel Weymouth: ORCID iD orcid.org/0000-0001-5080-5016

Catalogue record

Date deposited: 15 Sep 2017 16:30
Last modified: 14 Mar 2019 01:34

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