Underwater sound generator

Details Underwater sound generator Underwater sound generator

1975-12-29

1978-07-04

Lechert, Jr., Stephen J.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181120, G01V 106

Patent

active

040983692

ABSTRACT:
A monopropellant fluid is ignited in a combustion chamber to form a pressurized gas volume which may include the interior of a piston valve opening into the combustion chamber. A first gas path leading out of the combustion chamber conducts gas to surface areas of the piston so as to exert pressure urging the piston valve closed. A second gas path leading out of the combustion chamber conducts gas to other surface areas of the piston so as to exert pressure urging the piston valve to open a plurality of radial exhaust ports which vent the gas out of the combustion chamber and thereby generate a sonic pulse. Periodic opening and closing of the piston valve causes a train of sonic pulses to be generated.

REFERENCES:
patent: 3332510 (1967-07-01), Clark
patent: 3588801 (1971-06-01), Leonard

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