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A Mission Oriented Metric to Assess the Benefits of Biologically Inspired Propulsion

August 21, 2011 via - UUST

In this study, we quantify the potential mission specific benefits of biomimetic propulsion as a function of environmental conditions and operational requirements for a small unmanned underwater vehicle (UUV) mission. The benchmark mission requires the UUV to persist in shallow water for 24hr within a specified radius around the desired station, preceded and followed by a 40km transit

The achievable time on station for the nominal vehicle using biologically inspired propulsion is compared to that of the same vehicle using currently available thrusters. The comparison is carried out across a range of sea-states, with varying requirements for station keeping precision, and with a range of assumptions about the performance improvements provided by biomimetic propulsion. The expected magnitude and frequency of wave disturbances in shallow water are generated using U.S. Army Corps of Engineers guidelines for harbor design and construction.

If biomimetic propulsors can deliver on the promise of significantly improved effectiveness in generating low speed maneuvering forces, fin propelled vehicle can perform a high precision 24 hour station keeping mission in 3x higher waves than the thruster propelled vehicle. In rough conditions, the fin propelled vehicle can perform the mission with 10x higher precision.

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Author:Licht S, Isreal S,
Publisher:UUST
Citation:Licht S, Isreal S, A Mission Oriented Metric to Assess the Benefits of Biologically Inspired Propulsion, UUST, 21 Aug 2011
Date Published:August 21, 2011
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