Underwater Acoustic Data Processing

Author: Y. T. Chan
Publisher: Springer Science & Business Media
ISBN: 9780792301271
Size: 22.58 MB
Format: PDF
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Larger bubbles released, or formed by merging of several smaller bubbles Into
larger bubbles, may lead to sound ... The principal sources of radiated sound
from ships are: (1) the propulsion system; (2) the propeller; (3) the auxiliary ...

Principles Of Underwater Sound

Author: University of California (1868-1952). Division of War Research. Sonar Data Division
Publisher: National Academies
ISBN:
Size: 68.64 MB
Format: PDF, Mobi
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Suggested limits of overall sound level of several auxiliaries on submarines, and
the levels representing best naval practice. sources. ... Propeller sounds are of
two general kinds, (1) singing, due to vibrations of the propeller blades, and ...

Marine Propellers And Propulsion

Author: John Carlton
Publisher: Butterworth-Heinemann
ISBN: 0080971245
Size: 70.60 MB
Format: PDF, ePub, Docs
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The term phonation is used to describe the sounds produced by marine
mammals since some marine mammal sounds are not produced in the larynx, in
the way that humans produce speech. For most marine mammals, hearing and
sound is ...

Barron S Ged Canada

Author: Christopher Smith
Publisher: Barron's Educational Series
ISBN: 9780764138027
Size: 62.30 MB
Format: PDF
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This property of sound waves has been used by navies around the world to
identify enemy submarines. Using sensitive listening devices, it is possible to
hear the sounds generated by propellers in the submarines at distances of many
 ...

Mechanics Of Flow Induced Sound And Vibration Volume 2

Author: William K. Blake
Publisher: Academic Press
ISBN: 0128122900
Size: 70.61 MB
Format: PDF, Docs
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relate sound pressure p levelsffiffiffiffiffiffiffiffiffiffiffiffiffiffi ofp ffiffiffiffiffiffiffiffiffiffiffi
geometrically similar propellers. The spectrum function LðfD ρ0=PN K i=KÞ can
be determined by a test of a dynamically and geometrically similar model
propeller or ...

The Radiation Of Sound From A Propeller At Angle Of Attack

Author:
Publisher:
ISBN:
Size: 28.69 MB
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The characteristics of the measured non axially symmetric sound field at angle of
attack can be described in terms of the polar coordinate system shown in figure 1.
... For highly loaded, high tip speed propellers the changes can be quite large.