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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">nguphys</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский физический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>SIBERIAN JOURNAL OF PHYSICS</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9447</issn><publisher><publisher-name>Новосибирский государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25205/2541-9447-2022-17-1-34-46</article-id><article-id custom-type="elpub" pub-id-type="custom">nguphys-170</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА ЖИДКОСТИ, НЕЙТРАЛЬНЫХ И ИОНИЗОВАННЫХ ГАЗОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS OF A FLUID, NEUTRAL AND IONIZED GASES</subject></subj-group></article-categories><title-group><article-title>О динамических коэффициентах демпфирования конически-сферического тела при числе Маха М = 2,3</article-title><trans-title-group xml:lang="en"><trans-title>About the Dynamic Damping Coefficients of a Segmental-Cone Model at Mach M = 2.3.</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Адамов</surname><given-names>Н. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Adamov</surname><given-names>N. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>  Николай Петрович Адамов, кандидат технических наук </p><p>Новосибирск </p></bio><bio xml:lang="en"><p> Nikolai P. Adamov, Candidate of Engineering Sciences </p><p> Novosibirsk </p><p> </p></bio><email xlink:type="simple">adamov@itam.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мищенко</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mishchenko</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>  Никита Андреевич Мищенко, лаборант </p><p>Новосибирск </p></bio><bio xml:lang="en"><p> Nikita A. Mishchenko, Laboratory Assistant </p><p> Novosibirsk </p><p> </p></bio><email xlink:type="simple">nikita.mishchenko@yahoo.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Часовников</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chasovnikov</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Евгений Александрович Часовников, кандидат технических наук </p><p> Новосибирск </p></bio><bio xml:lang="en"><p> Evgenii A. Chasovnikiv, Candidate of Engineering Sciences </p><p> Novosibirsk </p></bio><email xlink:type="simple">chas@itam.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт теоретической и прикладной механики им. С. А. Христиановича Сибирского отделения Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт теоретической и прикладной механики им. С. А. Христиановича Сибирского отделения Российской академии наук;  Новосибирский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences;  Novosibirsk state University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>15</day><month>04</month><year>2022</year></pub-date><volume>17</volume><issue>1</issue><fpage>34</fpage><lpage>46</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Адамов Н.П., Мищенко Н.А., Часовников Е.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Адамов Н.П., Мищенко Н.А., Часовников Е.А.</copyright-holder><copyright-holder xml:lang="en">Adamov N.P., Mishchenko N.A., Chasovnikov E.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://nguphys.elpub.ru/jour/article/view/170">https://nguphys.elpub.ru/jour/article/view/170</self-uri><abstract><p>Для описания поведения амплитуды колебаний конически-сферической модели на поперечной державке при числе Маха М = 2,3 была использована полиномиальная зависимость функции вязкого демпфирования. В качестве функции вязкого демпфирования был взят полином 4-й степени, что дало возможность описать два предельных цикла, наблюдаемых в экспериментах. Коэффициенты полинома были определены и показали хорошее соответствие численному решению предложенного уравнения динамики.</p></abstract><trans-abstract xml:lang="en"><p>In order to describe the nonlinear behavior of oscillation amplitude of the segmental-conical model on a transversive rod setup in a wind tunnel at Mach М = 2, a polynomial function of damping derivatives was used. Polynom of the 4th degree as a function of viscous damping allowed to describe two limit cycles observed in experiments. Coefficients of the polynom were determined and showed sufficient agreement with a direct numerical solution of the proposed dynamic equation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>уравнение Ван дер Поля</kwd><kwd>устойчивость спускаемых аппаратов</kwd><kwd>аэродинамическое демпфирование</kwd><kwd>установка свободных колебаний</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Van der Pole equation</kwd><kwd>dynamic stability of reentry vehicles</kwd><kwd>aerodynamic damping</kwd><kwd>free oscillation setup</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проводилось в рамках программы фундаментальных научных исследований государственных академий наук на 2013–2020 годы (проект № АААА-А17-117030610125-7). Эксперименты проведены с использованием ЦКП «Механика»</funding-statement><funding-statement xml:lang="en">The research was carried out within the framework of the Program of Fundamental Scientific Research of the state academies of sciences in 2013–2020 (project no. АААА-А17-117030610125-7). Experiments were carried out using the equipment of the Joint Access Center “Mechanics”</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kazemba C. D., Braun R. D., Clark L. G., Schoenenberger M. Survey of Blunt Body Dynamic Stability in Supersonic Flow. AIAA, 2012, no. 4509, pp. 1–27.</mixed-citation><mixed-citation xml:lang="en">Kazemba C. D., Braun R. D., Clark L. G., Schoenenberger M. Survey of Blunt Body Dynamic Stability in Supersonic Flow. 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