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| 001 | 9.943039 |
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| 003 | CaOODSP |
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| 005 | 20240919151117 |
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| 006 | m o d f |
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| 007 | cr bn||||||||| |
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| 008 | 240909e199003##nscd ob f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | 0 |aeng|beng|bfre |
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| 086 | 1 |aD68-21/27-1990E-PDF |
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| 100 | 1 |aWatt, G. D., |eauthor. |
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| 245 | 10|aModelling submarine control surface deflection dynamics / |cGeorge D. Watt ; approved by W.C.E. Nethercote. |
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| 264 | 1|aDartmouth, N.S. : |bNational Defence, Research and Development Branch, Defence Research Establishment Atlantic, |cMarch 1990. |
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| 300 | |a1 online resource (iv, 18 pages) : |bgraphs. |
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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 |aTechnical memorandum ; |v90/203 |
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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 16). |
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| 520 | 3 |a"An algorithm is presented for modelling the time response of a lifting surface control system to an arbitrary set of commands. Response dynamics are governed by a linear, second order, ordinary differential equation. This allows the control system response frequency and damping to be modelled, as well as current control surface position and rate of change of position to be matched when a new command is issued. In order not to exceed the rate limit of the control system, yet maintain continuity in the response and its high order derivatives in time, the algorithm reduces response frequency when large deflection changes are required. This approach is compared to a common first order model, and to a second order model having piecewise continuous high order time derivates but which always models both response frequency and rate limit"--Abstract, page ii. |
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| 546 | |aIncludes abstracts in English and French. |
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| 650 | 0|aSubmarines (Ships)|xHydrodynamics|xMathematical models. |
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| 650 | 6|aSous-marins|xHydrodynamique|xModèles mathématiques. |
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| 710 | 2 |aDefence Research Establishment Atlantic, |eissuing body. |
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| 830 | #0|aD.R.E.A. technical memorandum ;|v90/203.|w(CaOODSP)9.941838 |
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| 856 | 40|qPDF|s827 KB|uhttps://publications.gc.ca/collections/collection_2024/rddc-drdc/D68-21-27-1990-eng.pdf |
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