Journal of Dynamics and VibroacousticsJournal of Dynamics and VibroacousticsДинамика и виброакустика2409-4579Samara National Research University31224010.18287/2409-4579-2024-10-1-7-20ArticlesСтатьиResearch ArticleInfluence of worn on flow characteristics of aircraft engine labyrinth sealsВлияние наличия врезания на расходные характеристики лабиринтных уплотнений авиационных двигателейМатвеевАндрей АлександровичMatveevAndrey A.
Russian Federation

инженер

Engineer

vut.13@mail.ruТисаревАндрей ЮрьевичTisarevAndrey Yu.
Russian Federation

кандидат технических наук, доцент кафедры конструкции и проектирования двигателей летательных аппаратов

Candidate of Science (Engineering), Associate Professor of the Department of Construction and Design of Aircraft Engines

ay.tisarev@uec-kuznetsov.ruFalaleevSergey V.ФалалеевСергей Викторинович
Russian Federation

Doctor of Science (Engineering), Professor, Head of the Department of Construction and Design of Aircraft Engines

доктор технических наук, профессор, заведующий кафедрой конструкции и проектирования двигателей летательных аппаратов

falaleev.sv@ssau.ruMironovaKseniya A.МироноваКсения Александровна
Russian Federation

аспирант

Postgraduate student

ka.bedenko@uec-kuznetsov.ruSamara National Research UniversityСамарский национальный исследовательский университет имени академика С. П. Королёваru0605202420241016.05.202472022092025Copyright ©; 2024, Матвеев А.А., Тисарев А.Ю., Фалалеев С.В., Миронова К.А.Copyright ©; 2024, Matveev A.A., Tisarev A.Y., Falaleev S.V., Mironova K.A.2024Матвеев А.А., Тисарев А.Ю., Фалалеев С.В., Миронова К.А.Matveev A.A., Tisarev A.Y., Falaleev S.V., Mironova K.A.https://creativecommons.org/licenses/by-sa/4.0https://journals.rcsi.science/2409-4579/article/view/312240

Labyrinth seals are currently the most common type of sealant in aircraft engines. The article proposes an approach to take into account the value of their cutting into the stator part when determining the air flow rate. The comparison of the results of calculation of characteristics of labyrinth seals taking into account cutting of seal combs into the stator part with the use of semi-empirical and numerical models is carried out. The nature of the change in air flow through the seal is revealed when the geometric parameters of the grooves in the stator part change as a result of wear of the actuated coating when the ridge of the labyrinth seal is inserted. The most effective semi-empirical models for calculating the characteristics of such seals for various wear patterns and gap sizes are proposed, as well as recommendations for their modernization to improve the accuracy of calculations.

Лабиринтные уплотнения в настоящее время являются наиболее распространённым типом герметизаторов в авиационных двигателях. В статье предложен подход для учёта величины их врезания в статорную деталь при определении расхода воздуха. Проведено сравнение результатов расчёта характеристик лабиринтных уплотнений с учётом врезания гребешков уплотнения в статорную деталь с использованием полуэмпирических и численной моделей. Выявлен характер изменения расхода воздуха через уплотнение при изменении геометрических параметров канавок в статорной детали в результате изнашивания срабатываемого покрытия при врезании гребешка лабиринтного уплотнения. Предложены наиболее эффективные полуэмпирические модели для расчёта характеристик таких уплотнений при различных картинах износа и величинах зазора, а также рекомендации по их модернизации для повышения точности расчётов.

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