Design principles for thrust enhancement in shape-changing AUVs

Francesco Giorgio-Serchi, Gabriel D. Weymouth

Research output: Contribution to conferencePaper

Abstract / Description of output

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 arecoupled 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.
Original languageEnglish
Publication statusPublished - 1 Oct 2017
EventHigh speed marine vehicles - Conference Hall of the University of Naples "Federico II", Naples, Italy
Duration: 25 Oct 201726 Jan 2019
Conference number: 11


ConferenceHigh speed marine vehicles
Abbreviated titleHSMV 2017
Internet address


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