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| 02527nam 2200397zi 4500 |
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| 001 | 9.936179 |
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| 003 | CaOODSP |
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| 005 | 20241007095055 |
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| 006 | m o d f |
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| 007 | cr |n||||||||| |
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| 008 | 240328e198912uubccad obt f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 043 | |an-cn-bc |
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| 086 | 1 |aDR52-11/7-1989E-PDF |
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| 100 | 1 |aPreston, Jonathan M., |eauthor. |
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| 245 | 10|aStability of towfish as sonar platforms and benefits of the two-part tow / |cJ.M. Preston. |
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| 264 | 1|a[Victoria, B.C.] : |bDefence Research Establishment Pacific [= Centre de recherches pour la défense pacifique] : |b[Research and Development Branch, Department of National Defence], |cDecember 1989 |
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| 300 | |a1 online resource (v, 38, [5] pages) : |billustrations, charts |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aDREP Technical memorandum ; |v89-19 |
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| 500 | |aDigitized edition from print [produced by Defence Research and Development Canada]. |
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| 504 | |aIncludes bibliographical references (page 33). |
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| 520 | 3 |a"Stability is a very important characteristic of the vessel or body on which a sonar is mounted. With normal tow configurations, stability requirements are often not met by a towfish in moderate sea states, particularly with short cable lengths. The trial described here demonstrates that the two-part tow, which uses a down weight and a neutrally buoyant towfish, significantly reduces towfish motion. In particular the two-part tow effectively suppressed pitch and accelerations. However towfish yaw, which was shown to be caused by lateral motions of the ship's stern, was still significant, and yaw is particularly important to sonar image quality."--abstract (page iii). |
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| 650 | 0|aRemote submersibles|zBritish Columbia|xDesign and construction. |
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| 650 | 0|aSidescan sonar. |
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| 650 | 6|aRobots sous-marins|zColombie-Britannique|xConception et construction. |
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| 650 | 6|aSonar latéral. |
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| 655 | 7|aTechnical reports|2lcgft |
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| 655 | 7|aRapports techniques|2rvmgf |
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| 710 | 2 |aDefence Research Establishment Pacific, |eissuing body. |
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| 710 | 1 |aCanada. |bDepartment of National Defence. |cResearch and Development Branch,|eissuing body. |
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| 830 | #0|aTechnical memorandum (Defence Research Establishment Pacific)|v89-19.|w(CaOODSP)9.936067 |
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| 856 | 40|qPDF|s1.77 MB|uhttps://publications.gc.ca/collections/collection_2024/rddc-drdc/DR52-11-7-1989-eng.pdf |
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