Hubrid Hull Forms for Conceptual High Speed Submersibles

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: DAAH0103CR011
Agency Tracking Number: 02SB2-0045
Amount: $98,959.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Mechmath Llc
2109 Windsong, Edmond, OK, 73034
DUNS: 012796715
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Eduard Amromin
 Executive Director
 (405) 844-2284
Business Contact
 Svetlana Kovinskaya
Title: President
Phone: (405) 844-2284
Research Institution
"DoD is interested in small underwater fighter-like vehicles. These submersibles will start from submarines and must carry sensors and/or weapons at a high speed. A part of their route will be passed over the water surface in littoral environment.Drag reduction is the key issue in design of such vehicles because submerged missiles add significant hydrodynamic drag. For surface operations, hydrofoils can both significantly reduce friction and pull missiles out of water. The missiles will besuspended under upper a foil/frame of a hydrofoil-biplane. This biplane is located between side hulls of the submersible.For underwater motions, the missiles are hidden within a vented partial cavity under the frame. The frame special design makes it possible the existence of stable partial cavities with negligible drag. Variation of appendage shapes and pressure in thecavity allows stabilization of this low drag in varying conditions.Phase I work includes elaboration of hybrid hull concepts (including propulsor selection, analysis of seakeeping and possible employment of polymer for additional drag reduction), experimental validation of frame drag reduction by cavitation in a watertunnel, and selection of CFD tools for future detailed design during Phase II. Commercialization will be mainly based on applications of drag reduction by partial cavities to both warships and fast commercial ships."

* information listed above is at the time of submission.

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