USA As Represented by Secretary of the Navy

Alexander Tsarev

Christopher M Nunes

Jennifer M Nunes

Dana Colegrove

Roger J Kleinmann

Jeeven B Hugh

The main components of an exemplary inventive simulation are a towing platform (such as a ship), a towed body, an underwater vehicle (such as a UUV), and a tow cable connecting the towing platform and the towed body. An objective of the dynamic arrangement of the components is to perform a 'line capture' of the moving vehicle by the cable. Respective motions and positions of the towing platform and the towed body affect the cable. Waves and currents in the water, as well as changes in catenary and tension of the cable, affect the tow body. Advantageously, the invention more accurately accounts not only for continuities, but also for discontinuities, characterizing the dynamic interrelationships between and among the components. Among the invention's features is its ability to 'trigger' consideration of certain dynamic manifestations relating to the vehicle, depending on whether or not the vehicle is in a captured state.

Maneuvering and control simulator for underwater vehicles

The invention is directed to a towing adaptation system for optimizing the pitch attitude, hydrodynamic lift and drag forces on an underwater acoustic vessel. The towing adaptation system an underwater vessel to which is attached a first adapter plate and a second adapter plate, with each adapter plate having a plurality of vertically displaced staged attachment points. Corresponding attachment points of the first and second adapter plates form attachment pairs, with each attachment pair calibrated to provide a desired cable angle, hydrodynamic lift, and drag force, at a predetermined steady-state speed, for optimizing performance.

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North Potomac, MD, United States of America

Alexander Tsarev