Ship wake signature suppression

Details Ship wake signature suppression Ship wake signature suppression

1997-05-06

1998-07-28

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Sonar counter-measures

H04K 300

Patent

active

057870489

ABSTRACT:
A method is presented to reduce the quantity of microbubbles having diameters of approximately 1000 microns or less in seawater as a means of ship wake signature suppression. Ultrasonic acoustic energy is projected into a volume of seawater in which the microbubbles reside, e.g., a ship's wake. The ultrasonic acoustic energy has a constant frequency selected from the range of approximately 0.5-2.5 MHz.

REFERENCES:
patent: 4235711 (1980-11-01), Koblanski
patent: 4395503 (1983-07-01), Matzner
patent: 4398925 (1983-08-01), Trinh et al.
patent: 4877516 (1989-10-01), Schram
patent: 5222455 (1993-06-01), Furey
patent: 5344532 (1994-09-01), Joseph
patent: 5613456 (1997-03-01), Kuklinski
Hampton, S.W., "Acoustic Bubble Density Measurement Technique for Surface ip Waters," Master's Thesis, Naval Postgraduate School, Monterey, Ca. 187 pages, Sep. 30, 1987.

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