LSV-2: Large Scale Vehicle 2

The world's largest unmanned autonomous submarine. LSV 2 Cutthroat will offer the capability to conduct a wide variety of studies dramatically improving the acoustic and operational performance of future submarines.

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History

Entered Navy: 2001.

Description

LSV 2 Cutthroat will provide submarine design engineers a platform to test advanced submarine technologies.

Cutthroat, a 205-ton, large scale submarine test vehicle, will be used to affordably explore and test emerging technologies and to conduct physics-based experiments. Specific emphasis will be on stealth, hydrodynamics, hydroacoustics and propulsion designs to permit technology insertion into current and future submarines.

The LSV 2 will provide the capability to develop and evaluate the effectiveness of new technologies that will result in major improvements in performance for the U.S. Navy's new attack submarine, USS Virginia (SSN 774). The LSV 2 is being designed and built by an industry team from Newport News Shipbuilding and General Dynamics/Electric Boat Company under contract from Naval Sea Systems Command (NAVSEA).

After delivery in 2001, LSV 2 will operate on Lake Pend Oreille at the Acoustic Research Detachment in Bayview, Idaho, the Navy's laboratory for demonstrating submarine stealth technology. The facility is operated by the Naval Surface Warfare Center's Carderock Division.

Cutthroat, named after a native Idaho trout, was named in 1997 after a selection process by nearby Athol Elementary School. The Navy asked the school to decide on a name from a list of indigenous Idaho fish. Many of these students attended the keel-laying in October 1997 and signed their names on the hull during the November 2000 ceremony.

Cutthroat is similar to Kokanee (LSV-1), but more advanced. Enhancements include a larger overall scale ? 29 percent, vice 25 percent for Kokanee ? which will improve the fidelity of test data to full-scale results. Cutthroat is designed to be more modular than Kokanee, so that major modifications, including radical hull changes, can be made with less impact to other systems onboard the vessel. Another advantage is an increase in ODAS capability. The Cutthroat ODAS will have twice as many data channels recorded as Kokanee at delivery ? 512, vice 256 ? and this is upgradable to 1,536 recorded channels. The Cutthroat ODAS converts the data from analog to digital form and processes the data digitally. In Cutthroat, data recording can be configured electronically under computer control, whereas Kokanee uses a patch panel. Cutthroat is equipped with a 3,000 horsepower permanent-magnet, radial-gap electric propulsion motor, provided to the Navy under a unique partnership agreement with General Dynamics Electric Boat, the owner of the technology. This motor is easily upgradable to 6,000 horsepower. Other order-of-magnitude improvements were engineered into the guidance, navigation, control, and propulsion systems, including the addition of torque sensors and other sensors of mechanical data for better reconstruction of the scenario.