| 摘要 |
The system "sonar - surface ship" with directional antennas of variable depth, which comprises a carrier ship with active sonar with a flexible elongated towed antenna and a downward-lifting device which are placed on it, while the composition of active sonar with a flexible elongated towed antenna includes hydrodynamic depressor, a cylindrical transducer, flexible elongated towed antenna, two cable-tows and anchor fall, and hydrodynamic depressor is connected to the downward-lifting device of carrier ship via cable-tug, flexible elongated towed antenna is connected to the hydrodynamic depressor via cable-tug, anchor fall is attached to the free end of the flexible elongated towed antenna and a cylindrical transducer is mounted on the upper surface of the hydrodynamic depressor with securing cable-tug. Cylindrical transducer is further provided with a cylindrical insert and the guide, the cylindrical transducer is placed on the hydrodynamic depressor so that the longitudinal axis of the cylindrical transducer and the hydrodynamic depressor lie in a vertical plane in the direction of towing the cylindrical insert is placed on the guide for movement along it in a horizontal plane, guide of its axis is parallel to the transverse axis of the cylindrical radiator and perpendicular to the plane which passes along vertical axis of said cylindrical radiator a cylindrical transducer is formed with an inner radius R, cylindrical transducer is made freely streamlined outside and inside with the external environment, a cylindrical insert is acoustically soft, said cylindrical insert is made to the size of radius r 0,25R <r <0,4R, the longitudinal axis of the cylindrical insert is placed parallel to the longitudinal axis of the cylindrical radiator in a plane with it, perpendicular to the vertical distance between the longitudinal axis l, respectively, of the cylindrical radiator and the cylindrical insert within 0,1R <l <0,7R. |
