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Acoustical transducer calibrating system and apparatusAn acoustical transducer calibrating system includes a differential pressure actuating device having an inner chamber for applying differential pressures to the transducer, and an outer chamber for vacuum sealing. Mounted within the inner chamber is an electrostatic actuator for exciting the transducer at selected frequencies so that its sensitivity can be determined for different operating ambient pressures.
Document ID
19730018652
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Lewis, T. L. (NASA Flight Research Center Edwards, CA, United States)
Cohn, R. B. (NASA Flight Research Center Edwards, CA, United States)
Date Acquired
September 2, 2013
Publication Date
July 10, 1973
Subject Category
Instrumentation And Photography
Report/Patent Number
Patent Number: NASA-CASE-FRC-10060-1
Patent Number: US-PATENT-3,744,294
Patent Application Number: US-PATENT-APPL-SN-189290
Accession Number
73N27379
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-FRC-10060-1|US-PATENT-3,744,294
Patent Application
US-PATENT-APPL-SN-189290

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