Accession Number : ADD018723

Title :   Underwater Defense System

Descriptive Note : Patent, Filed 22 Aug 96, patented 8 Jul 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : O'Connell, Thomas A

Report Date : 08 Jul 1997

Pagination or Media Count : 7

Abstract : A communications system of an underwater defense system is decoupled from an unmanned underwater vehicle (UUV) when the UUV is deployed under the surface of the water. A housing attached to the UUV has a communications wire spooled therein with a first end of the wire coupled to the UUV. Once underwater. the housing separates from the UUV causing the communications wire to he paid out from the housing. As a result, a pulling force is applied to the housing via the communications wire. Communications electronics are coupled to a second end of the communications wire. The communications electronics includes an RF antenna switchably coupled to an RF receiver operating at a first frequency and to an RF transmitter operating at a second frequency. A buoy is coupled to the communications electronics to float same to the surface of the water such that the RF antenna breaks the surface of the water. A drag drogue depends from the housing to supply a drag force hat offsets the pulling force to maintain the buoy at the surface of the water and the RF antenna above the surface of the water.

Descriptors :   *UNDERWATER VEHICLES, *COMMUNICATION AND RADIO SYSTEMS, *REMOTELY PILOTED VEHICLES, *PATENTS, DEFENSE SYSTEMS, WIRE, COMMUNICATION EQUIPMENT, RECEIVERS, SURFACE WATERS, UNMANNED, ANTENNAS, TRANSMITTERS, SUPPLIES, DRAG, RADIOFREQUENCY, HOUSING(DWELLINGS), BUOYS, DROGUE PARACHUTES

Subject Categories : Submarine Engineering
      Command, Control and Communications Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE