Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1994-05-27
1995-07-04
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
181117, 116137R, 116137A, H04R 2300
Patent
active
054306914
ABSTRACT:
A two-phase shock wave generator including a combustion chamber including a first, combustion, portion having an input port and a second, detonation, portion downstream of the first portion and having an output aperture; an air-fuel supply line, operative to feed the input port with an air-fuel mixture, an igniter, associated with the air-fuel supply line, which ignites the air-fuel mixture in the supply line and initiates a burning front which propagates towards the input port and a turbulence stimulator, fixedly mounted in the combustion chamber, which enhances and controls burning of the air-fuel mixture and includes a first section, situated within the combustion portion of the combustion chamber and having a preselected first gas dynamic resistance and a second section, situated within the detonation portion of the combustion chamber and having a preselected second gas dynamic resistance, lower than the first resistance, wherein the first resistance is such that burning of the air-fuel mixture in the combustion portion yields a predetermined pressure level suitable for initiating detonation of the remaining air-fuel mixture, in the detonation portion, and wherein the second resistance supports continued detonation of the remaining air-fuel mixture in the detonation portion.
REFERENCES:
patent: 3545562 (1970-12-01), Gundlach
patent: 3685808 (1972-08-01), Bodai
patent: 4189026 (1980-02-01), Elliot et al.
patent: 4193472 (1980-03-01), Kirby
patent: 4645542 (1987-02-01), Scharton et al.
patent: 4655846 (1987-04-01), Scharton et al.
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