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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">caht</journal-id><journal-title-group><journal-title xml:lang="ru">Научный вестник МГТУ ГА</journal-title><trans-title-group xml:lang="en"><trans-title>Civil Aviation High Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-0619</issn><issn pub-type="epub">2542-0119</issn><publisher><publisher-name>Moscow State Technical University of Civil Aviation (MSTU CA)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26467/2079-0619-2023-26-4-8-20</article-id><article-id custom-type="elpub" pub-id-type="custom">caht-2219</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>ТРАНСПОРТНЫЕ СИСТЕМЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TRANSPORTATION SYSTEMS</subject></subj-group></article-categories><title-group><article-title>Определение наиболее опасных режимов полета летательных аппаратов в условиях обледенения</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the most dangerous flight modes of aircraft in icing conditions</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>Боков</surname><given-names>С. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Bokov</surname><given-names>S. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Боков Сергей Романович, преподаватель кафедры аэродинамики, конструкции и прочности летательных аппаратов </p><p>г. Москва</p><p> </p></bio><bio xml:lang="en"><p>Sergey R. Bokov, Lecturer of the Chair of Aerodynamics, Design and Strength of Aircraft</p><p>Moscow</p></bio><email xlink:type="simple">s.bokov@mstuca.aero</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>Ефимов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Efimov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ефимов Вадим Викторович, доктор технических наук, доцент, профессор кафедры аэродинамики, конструкции и прочности летательных аппаратов</p><p>г. Москва </p></bio><bio xml:lang="en"><p>Vadim V. Efimov, Doctor of Technical Sciences, Associate Professor, Professor of the Chair of Aerodynamics, Design and Strength of Aircraft</p><p>Moscow</p><p> </p></bio><email xlink:type="simple">v.efimov@mstuca.aero</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Московский государственный технический университет гражданской авиации<country>Россия</country></aff><aff xml:lang="en">Moscow State Technical University of Civil Aviation<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>28</day><month>08</month><year>2023</year></pub-date><volume>26</volume><issue>4</issue><fpage>8</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Боков С.Р., Ефимов В.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Боков С.Р., Ефимов В.В.</copyright-holder><copyright-holder xml:lang="en">Bokov S.R., Efimov V.V.</copyright-holder><license 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://avia.mstuca.ru/jour/article/view/2219">https://avia.mstuca.ru/jour/article/view/2219</self-uri><abstract><p>В данной работе объектом исследования является обледенение поверхностей воздушных судов при полете в атмосфере. На многих легких летательных аппаратах, а также на беспилотных воздушных судах массой менее 30 кг отсутствуют бортовые противообледенительные системы. Тем не менее с данными летательными аппаратами происходят авиационные события, которые являются следствием их обледенения. Поэтому определение наиболее опасных режимов полета летательных аппаратов в условиях обледенения является актуальной задачей. Ввиду высокой стоимости проведения летных испытаний и невозможности охвата всех возможных событий из-за их потенциальной опасности, сложности создания условий полета воздушных судов в условиях обледенения на земле в настоящем исследовании был использован метод математического моделирования. Для решения поставленной задачи в рамках работы проведен анализ норм летной годности гражданских легких самолетов, самолетов транспортной категории, винтокрылых аппаратов нормальной и транспортной категории, проведено исследование влияния различных параметров на толщину нарастания льда с помощью вычислительного эксперимента, проведенного на разработанном авторами статьи программном обеспечении. На основе результатов вычислительного эксперимента были получены зависимости толщины льда от различных параметров обледенения, была разработана методика определения сочетания высот и скоростей полета воздушного судна, при которых на поверхности летательных аппаратов при прочих равных условиях образуется лед наибольшей толщины. Обладание данной информацией позволит экипажу летательного аппарата и специалистам по управлению воздушным движением избегать наиболее опасных режимов полета с точки зрения обледенения. </p></abstract><trans-abstract xml:lang="en"><p>In this paper, the object of research is the icing of aircraft surfaces during flight in the atmosphere. On many light aircraft, as well as on unmanned aircraft weighing less than 30 kg, there are no on-board de-icing systems. Nevertheless, aviation events occur with these aircraft, which are a consequence of their icing. Therefore, determining the most dangerous flight modes of aircraft in icing conditions is an urgent task. In view of the high cost of conducting flight tests and the impossibility of covering all possible events due to their potential danger, the complexity of creating flight conditions for aircraft in icing conditions on the ground, the mathematical modeling method was used in this study. To solve this problem, the analysis of the airworthiness standards of civil light aircraft, transport category aircraft, rotorcraft of normal and transport category was carried out within the framework of the work, the influence of various parameters on the thickness of ice build-up was investigated using a computational experiment conducted on the software developed by the authors of the article. On the basis of the results of the computational experiment, the dependences of the ice thickness on various icing parameters were obtained, a method was developed for determining the combination of heights and flight speeds of an aircraft, at which ice of the greatest thickness is formed on the surface of aircraft, other things being equal. Possession of this information will allow the aircraft crew and air traffic control specialists to avoid the most dangerous flight modes in terms of icing. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>обледенение воздушных судов</kwd><kwd>математическая модель</kwd><kwd>вычислительный эксперимент</kwd><kwd>летная эксплуатация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>icing</kwd><kwd>mathematical model</kwd><kwd>computational experiment</kwd><kwd>flight operation</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">Cao Y., Tan W., Wu Z. Aircraft icing: An ongoing threat to aviation safety // Aerospace Science and Technology. 2018. Vol. 75. Pp. 353–385. DOI: 10.1016/j.ast.2017.12.028</mixed-citation><mixed-citation xml:lang="en">Cao, Y., Tan, W., Wu, Z. (2018). Aircraft icing: An ongoing threat to aviation safety. 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