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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">ntv</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический вестник информационных технологий, механики и оптики</journal-title><trans-title-group xml:lang="en"><trans-title>Scientific and Technical Journal of Information Technologies, Mechanics and Optics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-1494</issn><issn pub-type="epub">2500-0373</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2226-1494-2025-25-6-1208-1219</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-554</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>МАТЕМАТИЧЕСКОЕ И КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MODELING AND SIMULATION</subject></subj-group></article-categories><title-group><article-title>Аэродинамический анализ профиля SD7037 с гибким закрылком при малых углах атаки и малых числах Рейнольдса</article-title><trans-title-group xml:lang="en"><trans-title>Aerodynamic analysis of SD7037 airfoil with flex-skin flap at low angles of attack and low Reynolds numbers</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8025-9367</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абед</surname><given-names>А.Т.М.А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mustafa Ali Abed</surname><given-names>A.T.M.A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Али Ахмед Тауфик Мустафа Абед, магистр, помощник преподавателя</p><p>Инженерный колледж; Отделение авиационной техники</p><p>10071; Багдад</p><p>sc 59392733600</p></bio><bio xml:lang="en"><p>Ahmed Tawfeeq Mustafa Ali Abed, Magister, Lecturer Assistant</p><p>College of Engineering; Aeronautical Engineering Department</p><p>10071; Baghdad</p><p>sc 59392733600</p></bio><email xlink:type="simple">a.t.abed@coeng.uobaghdad.edu.iq</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9792-7774</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хусейн</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Hussein</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>А. Азад Хусейн, PhD, преподаватель</p><p>Инженерный колледж; Отделение авиационной техники</p><p>10071; Багдад</p><p> sc 57297985700</p></bio><bio xml:lang="en"><p>Azad A. Hussein, PhD, Lecturer</p><p>College of Engineering; Aeronautical Engineering Department</p><p>10071; Baghdad</p><p> sc 57297985700</p></bio><email xlink:type="simple">azad.a@coeng.uobaghdad.edu.iq</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-9479-0536</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Махди</surname><given-names>С. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Mahdi</surname><given-names>S. H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хафед Саба Махди, магистр, помощник преподавателя</p><p>Инженерный колледж; Отделение авиационной техники</p><p>10071; Багдад</p></bio><bio xml:lang="en"><p>Saba Hafedh Mahdi, Magister, Lecturer Assistant</p><p>College of Engineering; Aeronautical Engineering Department</p><p>10071; Baghdad</p></bio><email xlink:type="simple">saba.hafedh@coeng.uobaghdad.edu.iq</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Багдадский университет</institution><country>Ирак</country></aff><aff xml:lang="en"><institution>University of Baghdad</institution><country>Iraq</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>23</day><month>12</month><year>2025</year></pub-date><volume>25</volume><issue>6</issue><fpage>1208</fpage><lpage>1219</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Абед А., Хусейн А.А., Махди С.Х., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Абед А., Хусейн А.А., Махди С.Х.</copyright-holder><copyright-holder xml:lang="en">Mustafa Ali Abed A., Hussein A.A., Mahdi S.H.</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://ntv.elpub.ru/jour/article/view/554">https://ntv.elpub.ru/jour/article/view/554</self-uri><abstract><p>   С использованием вычислительных методов изучено влияние закрылка беспилотного летательного аппарата с гибкой обшивкой на аэродинамические характеристики профиля SD7037 при низких числах Рейнольдса в диапазоне от 2·105 до 5·105. Исследование проводилось в диапазоне углов атаки (Angles of Attacks, AoAs), связанных с фазой взлета и различными углами закрылка беспилотного летательного аппарата. Численная модель реализована в пакете Siemens STAR-CCM+ с использованием модели турбулентности переноса касательных напряжений κ-ω и модели перехода γ-Reθ, которая обеспечивает приближенное решение уравнений Навье–Стокса. Проверка вычислительного решения выполнена путем сравнения с имеющимися экспериментальными данными, полученными для плоского закрылка. Обнаружено, что результаты довольно хорошо совпадают при более низких AoAs. Показано, что определенные наборы AoAs и углов закрылка могут заметно обеспечить подъемную силу с аэродинамическим качеством выше базовых условий, тем самым улучшая характеристики, особенно на этапе взлета. Установлено, что некоторые комбинации параметров оказались неэффективными, и от них было рекомендовано отказаться. Обнаружено, что гибкая обшивка закрылка обеспечивает более высокий коэффициент подъемной силы, но также и более высокий коэффициент лобового сопротивления при том же диапазоне углов атаки по сравнению с обычным закрылком беспилотного летательного аппарата.</p></abstract><trans-abstract xml:lang="en"><p>   This work concentrates on the effect of a flex-skin trailing edge flap on the aerodynamic characteristics of SD7037 airfoil at low Reynolds numbers, in the range of 2·105 to 5·105 using computational methods. The study used a range of angle of attack (AOA) associated with the take-off phase and different flap angles. The numerical model was set up in Siemens STAR-CCM+ package using the κ-ω shear stress transport turbulence model and the (γ-Reθ) transition model which ensured the approximate solution of Navier-Stokes equations. The verification of the computational solution was done by the comparison with the available experimental data of the plain flap, and it was discovered that the results matched pretty well at lower AoAs. Results indicated that certain sets of AoAs and flap angles can notably achieve the lift over the drag ratio above the baseline conditions, thus improved the performance especially during take-off stage. Besides, some combinations were found to be inefficient, and these were recommended to be discarded. Additionally, the results showed that the flex-skin flap generated higher lift coefficient but also higher drag coefficient at the same range of AoAs as compared to that of the plain flap.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>БПЛА</kwd><kwd>аэродинамика</kwd><kwd>подъемная сила</kwd><kwd>сопротивление</kwd><kwd>производительность</kwd><kwd>беспилотный летательный аппарат</kwd></kwd-group><kwd-group xml:lang="en"><kwd>UAV</kwd><kwd>aerodynamics</kwd><kwd>lift</kwd><kwd>drag</kwd><kwd>performance</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Anderson J.D. Introduction to Flight. McGraw Hill, 2015. 928 p.</mixed-citation><mixed-citation xml:lang="en">Anderson J.D. Introduction to Flight. McGraw Hill, 2015, 928 p.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Sadraey M.H. 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