Near Field Sound Pressure Measurements of a Vibrated Sonar Transducer TR-208 - AN/SQS-23.
Abstract
As a part of the AN/SQS-23 Modernization Program, NEL Problem J714, and particularly that portion of the program directed to the description of possible sonar self noise problem areas the work reported in this memorandum is an effort to point out one aspect of the Self Noise Picture; that is, locally produced noise pressures caused by the vibration of the AN/SQS-23 transducer assembly. The method of testing consisted of measuring local water borne (near field) sound pressures at ten (10) discrete probe hydrophone positions about the periphery of the Sonar Transducer TR-208/SQS-23, (the transducer) while it was vibrated in each of two directions by vibration generators (shakers). The transducer was suspended in water so that the shaker assembly was above water. Suspension of the entire assembly was by means of a truck crane. Also described is the sequence of assembly and final positioning of the transducer for testing. For convenience and rapid data acquisition outputs of the pre-calibrated accelerometers and Probe Hydrophones were analyzed and recorded sequentially as the shakers were vibrated with a sweep control frequency ranging from 50 cps to 5,000 cps.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 11, 1966
- Accession Number
- ADA051545
Entities
People
- G. M. Coleman
Organizations
- Navy Electronics Laboratory