MULTIELEMENT HYDROACOUSTIC ANTENNA Russian patent published in 2015 - IPC G01S15/00 

FIELD: radio engineering, communication.

SUBSTANCE: disclosed is a multielement hydroacoustic antenna, having a base on which sections are mounted, the sections having rod-shaped piezoceramic transducers, each section being enclosed in a sealed housing and having on the front side a plate in the openings of which front cover plates of the rod-shaped piezoceramic transducers are inserted, the cover plates being sealed with the walls of the openings by rubber decoupling seals, and each section having an electrical lead. In the antenna, each plate is a segment of a cylindrical surface with a height h with a centre angle β. The multielement hydroacoustic antenna is in the form of a segment of a thick-walled cylinder with thickness b, where b is the radial dimension of the section, height nh, where n is the number of sections on the height of the multielement hydroacoustic antenna, and a centre angle α=kβ, where k is the number of sections on the guide cylindrical surface. The base of the multielement hydroacoustic antenna is in the form of a circular metal flange which is provided with supports which are perpendicular to the flange and have the shape of a segment of a cylindrical surface which is congruent to the inner surface of the section; the supports are displaced from the edge of the base by a distance b. The housing of each section is attached by its back surface via detachable connections to two supports; the width of the support b1 is sufficient to accommodate a detachable connection, which may be threaded, and electrical leads from the sections are made at the back side thereof in spaces between supports and come out of the antenna through a centre hole in the flange.

EFFECT: easy transportation of the antenna to a facility and assembly thereof, which improves technological effectiveness thereof, reduces the cost and overall dimensions, and the possibility of replacing sections directly onboard prolongs service life without deterioration of tactical and technical characteristics.

2 cl, 2 dwg