Abstract
The coupled development of aerodynamic asymmetry and hysteresis of the aerodynamic characteristics of an aircraft model with the straight wing (zero sweepback wing) of high aspect ratio λ = 10.6 is experimentally studied when the angle of attack varies from 0 to 20° and vice versa. The appearance of hysteresis is accompanied by the asymmetric flow separation from the wing panels. An increase in the Reynolds number Re from 0.24 × 106 to 0.32 × 106 leads to strengthening of the hysteresis effects. It is shown that the asymmetric deflection of ailerons by 40° and/or spoilers by –60° can lead to disappearance of asymmetry or change in its sign.
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ACKNOWLEDGEMENTS
The authors express gratitude to staff members of the Aerohydrodynamic Institute T.I. Trifonova and S.V. Svergun for their assistance in preparing and conducting experiments.
Funding
Analysis of experimental data and preparation of the paper were carried out with financial support of the Russian Science Foundation (Grant no. 21-19-00659).
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Translated by I.G. Brykina
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Alieva, D.A., Grishin, I.I., Kolin’ko, K.A. et al. Hysteresis and Asymmetry of the Aerodynamic Characteristics of Aircraft Model with High Aspect Ratio Straight Wing under the Flow Separation. Fluid Dyn 57, 729–735 (2022). https://doi.org/10.1134/S0015462822601280
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DOI: https://doi.org/10.1134/S0015462822601280