UNDERWATER ACOUSTIC SCREEN Russian patent published in 2005 - IPC

FIELD: hydro-acoustics.

SUBSTANCE: shelves of upper layer of screen are placed inside massive of lower layer, for example, by vulcanization, and form a single solid massive with it. Upper layer is provided with additional shelves, placed in portions of air hollows of lower layer. Additional shelves are placed with space between walls of said air hollows, and shelves of upper layer have cross-section variable in height. Upper layer, on the side opposite to shelves has air hollows, and total area of said hollows forms 10-12% of screen area.

EFFECT: higher efficiency.

2 cl, 5 dwg