Airborne sensor for listening to acoustic signals

Details Airborne sensor for listening to acoustic signals Airborne sensor for listening to acoustic signals

1993-04-20

1994-08-16

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

367901, 381 86, 381 91, 381188, 381205, H04R 2300

Patent

active

053392876

ABSTRACT:
An acoustic sensor for use in a typical atmospheric condition, which contains both winds and turbulence, such as a wind and turbulence encountered on the exterior surface of a moving airborne flight vehicle includes a probe housing having a streamlined shape and a set of indentations in the exterior surface thereof extending inwardly located at a particular longitudinal location, radial airflow passages nested in respective ones of the concave indentations, the passages merging at a central manifold of the passages, wherein the particular longitudinal location is such as to minimize noise attributable to fluctuations in the wind in a longitudinal direction, and wherein the concave indentations have indentation depths such as to minimize noise attributable to wind transverse to the probe.

REFERENCES:
patent: 4388502 (1983-06-01), Cohn
"Static-pressure probes that are theoretically insensitive to pitch, yaw and Mach number", A. M. O. Smith and A. B. Bauer, Jan. 5, 1970.

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