Acoustic source array system module for underwater operation...

Details Acoustic source array system module for underwater operation... Acoustic source array system module for underwater operation...

2005-03-22

2005-03-22

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

Reexamination Certificate

active

06870795

ABSTRACT:
A small boat or launch such as a motorized reinforced hull inflatable boat provides a platform for an acoustic source array of airguns. The array is made up as a ladder structure in which the airguns are disposed horizontally between vertical support and umbilical lines, preferably with their discharge ports in laterally offset or staggered relationship to minimize undesirable interactions between the acoustic transmissions released into the water by the sources and to help maximize the acoustic output of the array for a given array length. A structure stows the array on the boat for transport when the array is not deployed for use. If desired, the stowed array may be substantially enclosed by the hull of the boat. The stowage structure is preferable defined by a track or rails on the top of the deck. Umbilical cables attached to the array are translated, as by being wound on a drum and unwound therefrom, to deploy or retrieve the array over the stern of the boat. The umbilicals provide power (compressed air to the airguns and control signals for timed actuation of the guns). The array may be part of a module which includes a winch for winding and unwinding the umbilicals to retrieve and deploy the array. The array system also includes a compressor for supplying compressed air to the airguns of the array.

REFERENCES:
patent: 4380808 (1983-04-01), Hill et al.
patent: 5469404 (1995-11-01), Barber et al.
patent: 5841733 (1998-11-01), Bouyoucos et al.
patent: 5995452 (1999-11-01), Bouyoucus
patent: 6061635 (2000-05-01), Barber, Sr.
patent: 20040013041 (2004-01-01), Bouyoucus et al.

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