Efficient, Highly Maneuverable Artificial Fish for Stealthy Surveillance

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,996.00
Award Year:
2008
Program:
STTR
Phase:
Phase I
Contract:
N00014-08-M-0295
Agency Tracking Number:
N08A-030-0377
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
APPLIED PHYSICAL SCIENCES CORP.
475 Bridge Street, Suite 100, Groton, CT, 06340
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
112716357
Principal Investigator:
Benjamin Connell
Scientist
(860) 448-3253
bconnell@aphysci.com
Business Contact:
David Horne
Sr Vice PResident/CFO
(860) 448-3253
dhorne@aphysci.com
Research Institution:
MASSACHUSETTS INST OF TECHNOLOGY
Michael Corcoran
77 Massachusetts Ave
Building E19-750
Cambridge, MA, 2139
(617) 253-6762
Nonprofit college or university
Abstract
Experimental and computational studies have indicated the benefits of fish swimming propulsion for efficiency and fast maneuvering capability. The biological paradigm of using unsteady body motion to generate and manipulate flow vorticity for desired hydrodynamic thrust marks a shift from the quasi-steady treatments used in practice for the engineering of vehicle hydrodynamics. A key component to fish efficiency and maneuvering capability is the precision evolutionary tuning of structural properties of the fish body. This tuning allows the fish to lock in efficient natural fluid-structural modes of propulsion with minimal energy input. The storage and re-release of structural potential energy into the flow permit high swimming efficiencies and the large power deliveries required for fast maneuvering. The proposed vehicle follows the biological design of an underactuated structurally tuned flexible primary propulsor, utilizing natural dynamics of the system to realize locomotive efficiencies. The single point modally actuated flexible tail propulsor is complemented by a pair of two-degree-of-freedom three-dimensional foils to be used in quasi-static mode as control surfaces, and in flapping mode for maneuvering. Vehicle design will be built upon previous studies into passive and actuated fluid-structural modes and propulsion of tuned flexible bodies, and maneuvering control using three-dimensional flapping foils.

* information listed above is at the time of submission.

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