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Prediction Method for Hydrodynamic Problems of Two Bodies Operating in Close Proximity

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 25735
Amount: $744,171.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1995
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
2133 - 152nd Avenue Ne
Redmond, WA 98052
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr Brian Maskew
 (206) 643-9090
Business Contact
Phone: () -
Research Institution

The Navy's plan to launch and retrieve Unmanned Undersea Vehicles (UUVs) from submarines will require precise control of the UUV when it is in close proximity to the submarine hull. The hydrodynamic forces experienced by the UUV when it is near the submarine are significantly different from those it experiences when it is far away. In order to design a successful control system for the UUV, therefore, a method is needed that can predict these hydrodynamic forces when the two bodies are close together. The objective of the proposed effort is to develop a capability to predict the hydrodynamic loads and trajectories of a UUV and submarine while operating in close proximity and possibly colliding with each other. The basis of the proposed effort would be an existing unsteady computer code, USAERO, which already has a very general capability for computing flows about multiple body configurations in arbitrary motion. Under the proposed Phase I effort, certain modifications would be implemented which would demonstrate the feasibility of the approach. Further improvements would be identified for a Phase II follow-on effort that would productionize the method as a useful and effective tool in the design environment.

* Information listed above is at the time of submission. *

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