Communications – electrical: acoustic wave systems and devices – Signal transducers – Receivers
Patent
1996-01-22
1997-11-04
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Receivers
H04R 102
Patent
active
056847564
ABSTRACT:
An acoustic sensor assembly is provided for sensing acoustic signals in a moving fluid such as high speed fluid stream. The assembly includes one or more acoustic sensors and a porous, acoustically transparent screen supported between the moving fluid stream and the sensor and having a major surface disposed so as to be tangent to the moving fluid. A layer of reduced velocity fluid separating the sensor from the porous screen. This reduced velocity fluid can comprise substantially still air. A foam filler material attenuates acoustic signals arriving at the assembly from other than a predetermined range of incident angles.
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Horne W. Clifton
Jaeger Stephen
Liu Sandy
Schmitz Fredric
Lupuloff Harry
Mannix John G.
Pihulic Daniel T.
The United States of America as represented by the Administrator
Warsh Kenneth L.
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