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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
0861 |aD68-21/29-1991E-PDF
1001 |aGraham, Ross, |eauthor.
24510|aSecond-order analysis of roll decay tests / |cRoss Graham - Andrew Webber ; approved by R.T. Schmitke.
264 1|aDartmouth, N.S. : |bNational Defence, Research and Development Branch, Defence Research Establishment Atlantic, |cAugust 1991.
300 |a1 online resource (v, 16 pages) : |bgraphs.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aTechnical memorandum ; |v91/211
500 |aDigitized edition from print [produced by Defence Research and Development Canada].
504 |aIncludes bibliographical references (page 13).
5203 |a"A method for determining linear plus quadratic roll damping coefficients from roll decay tests that is believed to be accurate up to second order in the damping coefficients is described. Two computer programs are developed to estimate roll decay coefficients via chi-square fitting using first-order and second order analyses. The methods are applied to measured and simulated roll decay data, and excellent results are obtained with both codes. While the second-order results represent an improvement in both goodness-of-fit and accuracy compared with the first-order results, the latter are already so good that the improvement is considered to be of limited practical significance"--Abstract, page ii.
546 |aIncludes abstracts in English and French.
650 0|aShips|xManeuverability|xMeasurement.
650 0|aStability of ships|xComputer programs.
650 6|aNavires|xManœuvrabilité|xMesure.
650 6|aNavires|xStabilité|xLogiciels.
7102 |aDefence Research Establishment Atlantic, |eissuing body.
830#0|aD.R.E.A. technical memorandum ;|v91/211.|w(CaOODSP)9.941838
85640|qPDF|s637 KB|uhttps://publications.gc.ca/collections/collection_2024/rddc-drdc/D68-21-29-1991-eng.pdf