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Tuesday, May 19, 2020 | History

3 edition of An end-capped cylindrical hydrophone for underwater sound detection found in the catalog.

An end-capped cylindrical hydrophone for underwater sound detection

Dennis Feltham Jones

An end-capped cylindrical hydrophone for underwater sound detection

by Dennis Feltham Jones

  • 274 Want to read
  • 33 Currently reading

Published by Defence Research Establishment Atlantic in Dartmouth, Nova Scotia .
Written in English


Edition Notes

StatementD.F. Jones, S.E. Prasad, S.R. Kavanaugh.
SeriesTechnical memorandum (Defence Research Establishment Atlantic) -- 92/216
ContributionsPrasad, S.E., Kavanaugh, S.R., Defence Research Establishment Atlantic.
The Physical Object
Paginationv, 24 p.
Number of Pages24
ID Numbers
Open LibraryOL20999462M


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An end-capped cylindrical hydrophone for underwater sound detection by Dennis Feltham Jones Download PDF EPUB FB2

With today's wide-frequency-range, extreme-dynamic-range stereo sound tracks it is appropriate to consider hydrophone techniques that can bring underwater sound pickup to the same state of the art that airborn sound pickup enjoys.

Underwater sounds can be captured as accurately and easily as milking an orchestra on stage; in some cases more easily, since there is always something to hang the. Abstract.

All the applications of underwater projectors described at the beginning of Chapter 3 also require the use of hydrophones. In most active sonar systems the same transducers serve as both projectors and hydrophones, but there are good reasons in some cases to use separate hydrophones for reception, (e.g., hydrophones in towed line arrays can be well removed from the ship’s self-noise).Cited by: 4.

In this work, active vibration control of an underwater cylindrical shell structure was investigated, to suppress structural vibration and structure-borne noise in water.

Finite element modeling of the submerged cylindrical shell structure was developed, and experimentally evaluated. Modal reduction was conducted to obtain the reduced system equation for the active feedback control algorithm Cited by: Sep 02,  · Abstract.

All the applications of underwater projectors described at the beginning of Chap. 5 also require the use of hydrophones. In most active sonar systems the same transducers serve as both projectors and hydrophones, but there are good reasons in some cases to use separate hydrophones for reception, e.g., hydrophones in towed line arrays can be well removed from the self-noise of the greggdev.com by: 4.

Transducers as Hydrophones. was directly compared with a solid PZT-5A cylindrical hydrophone of equal dimensions in a hydrophone test tank. close_quote} U.S. Navy Underwater Sound. ULTRASONIC TRANSDUCERS 2. Underwater sound transducers R. Woollett Ultrasonic transducers are useful underwater only when short ranges are acceptable, but their small size makes them convenient and allows use of generous safety factors in greggdev.com by: 3.

Low-frequency source for very long-range underwater communication Article in The Journal of the Acoustical Society of America (1):ELEL67 · January with 48 Reads How we measure 'reads'.

AES E-Library Complete Journal: Volume 40 Issue 9. The radiated sound pressure p (t) of the direct the signal path, as illustrated in Fig.

Since it is sound at a receiving point on axis can be calculated by impossible to realize elements with negative delay time, convolution of the cone displacement x (t) with the re - an. construct a mini-underwater vehicle that will seek out to hover at a desired programmed depth.

We will also discuss how our students use Arduinos for fun, research, underwater ROV’s and general exploration. An optional pool-test of your mini-underwater vehicle will occur after the workshop at a.

World Patent Index. Comments. Content. DERWENT Cyclotomy CYCLOTRIDECENE CYCLOTRON Cyclotronic Cyclotrons CYCLOUNDECANE CYLINDER Cylinder’s Cylindered Cylinders Cylindrical Cylindrically Cylindro CYMARIN CYMAROL CYMBAL Cymbals CYMBIDIUM CYMENE CYNARA CYPERACEAE CYPERMETHRIN CYPERUS CYPRESS CYPROHEPTADINE CYPROTERONE.

The response of a cylindrical end-capped hydrophone (NUWC-USRD Model H56) used for calibration purposes is shown in Fig. It has FFVS of − dB re 1 µPa.

The new edition of the book is extended in some chapters, translated to English and divided into two separate volumes – the first one with the physical foundations of piezoelectric sensorics, the second one mostly applicationoriented piezoelectric sensorics instrumentation.

Apr 01,  · Measuring Interfacial Tension Between Immiscible Liquids. NASA Technical Reports Server (NTRS) Rashidnia, Nasser; Balasubramaniam, R.; Delsignore, David M.

Glass capil. Download Derwent World Patents Index Title Terms Cyclotomy CYCLOTRIDECENE CYCLOTRON Cyclotronic Cyclotrons CYCLOUNDECANE CYLINDER Cylinder’s Cylindered Cylinders Cylindrical Cylindrically Cylindro CYMARIN CYMAROL CYMBAL Cymbals CYMBIDIUM CYMENE CYNARA CYPERACEAE CYPERMETHRIN CYPERUS CYPRESS CYPROHEPTADINE CYPROTERONE [91] .