Aerodynamic Aspects of the Transport Category Aircraft Airframe Structure Repairing

Aeronautical and Space-Rocket Engineering


Аuthors

Berezko M. E.1, 2*, Sagaidak M. V.1, 2**, Shevyakov V. I.1***

1. Yakovlev Corporation Regional Aircraft Branch, 26, Leninskaya Sloboda str., Moscow, 115280, Russia
2. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: maxberezko@yandex.ru
**e-mail: mikhaelvs@mail.ru, m_sagaydak@sj.yakovlev.ru
***e-mail: shevvi@mail.ru

Abstract

In the course of the transport aircraft operation, defects of the aircraft outer surface, affecting its characteristics, may appear. Dents, steps, gaps, etc. may be assigned to such defects. The degree of these defects impact defines the need for the aircraft repair. The article provides examples of justifying restrictions during repair in terms of its effect on harmful resistance. There may be cases of damage to the outer surface when it is necessary to perform a more complex aerodynamic analysis of the repair impact on the aircraft characteristics. One of such cases is considered in detail in the work, namely justification of the possibility of the aircraft wing slat sections repairing in cases of the presence/absence of an anti-icing system on them. In case of the wing slat frontal part damaging, for example, by a collision with a bird, the repair may be accomplished by the overlay installing on the slat section outer surface. The overlay may reduce the thermal anti-acing system operation effectiveness in the repair zone, which may be accompanied by the possibility of the barrier ice forming on the slat/wing upper section, which drastically affects the aircraft dynamics. On the assumption that the barrier ice is being formed, parametric assessment of its impact on the aircraft resistance and its load bearing properties was performed. Numerical modeling of the flow-around was performed with the ANSYS FLUENT software. A system of Navier–Stokes equations averaged by Reynolds and closed by the Spalart–Allmaras turbulence model was being solved. Examples of possible restrictions on the size and placement of the overlay, in dependence on the degree their impact on the aircraft aerodynamics are presented.

Keywords:

transport category aircraft, outer surface defects, drag, airframe structure repair, barrier ice

References

  1. Fedorenko G.A. Trudy TsAGI. Issue 2100. Moscow, Izdatel'skii otdel TsAGI, 1981, 36 p.

  2. Shevyakov V.I. Nauchnyi vestnik MGTU GA, 2014, no. 199, pp. 62-73.

  3. Shevyakov V.I. Nauchnyi vestnik MGTU GA, 2011, no. 163, pp. 133-137.

  4. Getting hands-on experience with aerodynamic deterioration. A performance audit view. Airbus Industrie. STL 945.3399/96. France, 2001, 172 p.

  5. Alekseenko S.V., Prikhod'ko A.A. Uchenye zapiski TsAGI, 2013, vol. XLIV, no. 6, pp. 25–57.

  6. Pavlenko O.V., Pigusov E.A. Application specifics of tangential jet blow-out on the aircraft wing surface in icing conditions. Aerospace MAI Journal, 2020, vol. 27, no. 2, pp. 7-15. DOI: 10.34759/vst-2020-2-7-15

  7. Bosnyakov S.M., Volkov A.V., Mikhailov S.V., Podaruev V.Yu. Matematicheskoe modelirovanie, 2023, vol. 35, no. 9, pp. 22–44. DOI: 10.20948/mm-2023-09-02

  8. Amelyushkin I.A., Makhnev M.S., Mussa Kh. et al. Uchenye zapiski TsAGI, 2023, vol. 54, no. 3, pp. 10-21.

  9. Sorokin K.E., Aksenov A.A., Zhluktov S.V. et al. Computer Research and Modeling, 2023, vol. 15, no. 4, pp. 957-978. DOI: 10.20537/2076-7633-2023-15-4-957-978

  10. Sorokin K.E., Byvaltsev P.M., Aksenov A.A. et al. Computer Research and Modeling, 2020, vol. 12, no. 1, pp. 83-96. DOI: 10.20537/2076-7633-2020-12-1-83-96

  11. Modorskii V.Ya., Kalyulin S.L., Sazhenkov N.A. Experimental test rig for assessing icing and ice destruction effect on the model fan vibrations of a small-sized aircraft. Aerospace MAI Journal, 2023, vol. 30, no. 4, pp. 19-26. URL: https://vestnikmai.ru/publications.php?ID=177603

  12. Gulimovskii I.A., Greben’kov S.A. Applying a modified surface mesh wrapping method for numerical simulation of icing processes. Aerospace MAI Journal, 2020, vol. 27, no. 2, pp. 29-36. DOI: 10.34759/vst-2020-2-29-36

  13. Kashevarov A.V., Stasenko A.L. Evolution of the water film and run-back ice on the surface of a body in plane airflow. Thermophysics and Aeromechanics, 2019, vol. 26, no. 2, pp. 223–230. DOI: 10.1134/S0869864319020069

  14. Kashevarov A.V., Miller A.B., Potapov Y.F. et al. Effect of ice crystals on run-back ice evolution on a wing model. Thermophysics and Aeromechanics, 2021, vol. 28, no. 2, pp. 21–28. DOI: 10.1134/S0869864321010030

  15. Borisova N.A. Nauchnyi vestnik MGTU GA, 2009, no. 138, pp. 98-100.

  16. Egorov A.V. Engineering Journal: Science and Innovation, 2023, no. 4(136). DOI: 10.18698/2308-6033-2023-4-2266

  17. Cao Y., Tan W., Su Y. et al. The effects of icing on aircraft longitudinal aerodynamic characteristics. Mathematics, 2020, vol. 8, no. 7: 1171. DOI: 10.3390/math8071171

  18. Zuev V.V., Mordus D.P., Pavlinskii A.V. Aircraft icing nowcasting technique. IOP Conference Series: Earth and Environmental Science. 2020. Vol. 611. International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems (7-11 September 2020; Tomsk, Russian Federation). No. 1: 012057. DOI: 10.1088/1755-1315/611/1/012057

  19. Yamazaki M., Jemcov A., Sakaue H. A review on the current status of icing physics and mitigation in aviation. Aerospace, 2021, vol. 8, no. 7: 188. DOI: 10.3390/aerospace8070188

  20. Li S., Qin J., Paoli R. Data-driven machine learning model for aircraft icing severity evaluation. Journal of Aerospace Information Systems, 2021, vol. 18, no. 11, pp. 876-880. DOI: 10.2514/1.I010978

  21. Yi X., Wang Q., Chai C., Guo L. Prediction Model of Aircraft Icing Based on Deep Neural Network. Transactions of Nanjing University of Aeronautics & Astronautics, 2021, vol. 38, no. 4, pp. 535-544. DOI: 10.16356/j.1005-1120.2021.04.001

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