Abstract
The effect of winglets on the aerodynamic characteristics of a heavy aircraft and the parameters of the vortex wake behind it is investigated for the landing regime. The solution of the complete problem is obtained by breaking up the wake into three regions, namely, the near, intermediate, and far flowfields, in which the corresponding subproblems are successively solved. The wake flowfields are obtained at different distances from the aircraft, together with the distributions of the mean azimuthal velocity over the vortex radius, and the lifetime of the vortex system is estimated for several one-and two-element wingtip versions. All the results are compared with those for the baseline layout with no winglets.
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References
V.J. Rossow, “Lift-Generated Vortex Wakes of Subsonic Transport Aircraft,” Progress Aerospace Sci., 35, 507 (1999).
S.C. Crow, “Stability Theory for a Pair of Trailing Vortices,” AIAA J. 8, 2172 (1970).
G.A. Pavlovets, A.V. Voyevodin, and A.V. Zubtsov, “On the Effect of Spanwise Circulation Distribution on the Vortex Wake Intensity,” Tr. TsAGI 2641, 191 (1999).
G.G. Soudakov, A.V. Voyevodin, and A.V. Zubtsov, “Aircraft Vortex Attenuation,” Tr. TsAGI 2641, 183 (1999).
N.A. Chicherov, “Certain Results of a Parametric Study of Wings with End Spacers,” Tr. TsAGI No. 2504, 22 (1991).
I.M. Kroo, “Drag Due to Lift: Concepts for Prediction and Reduction,” Annu. Rev. Fluid Mech. 33, 587 (2001).
V.V. Vyshinskii and G.G. Sudakov, “Mathematical Model of the Evolution of the Vortex Wake behind an Aircraft in a Turbulent Atmosphere,” Aeromekh. Gaz. Din. No. 3, 46 (2003).
A.V. Voevodin and G.G. Sudakov, “Method of the Calculation of the Aerodynamic Characteristics of the Subsonic Separated Flow around a Flight Vehicle,” Uch. Zap. TsAGI 23, No. 3, 3 (1992).
S. Shen, F. Ding, J. Han, Y.-L. Lin, S. P. Arya, and F. H. Proctor, “Numerical Modeling Studies of Wake Vortices: Real Case Simulation,” AIAA Paper No. 0755 (1999).
T. Gerz, F. Holzapfel, and D. Darracq, “Aircraft Wake Vortices,” Position Paper Wake Net (2001).
D.P. Delisi and R.E. Robins, “Short-Scale Instabilities in Trailing Wake Vortices in a Stratified Fluid,” AIAA J. 38, 1916 (2000).
Additional information
Original Russian Text © A.V. Voevodin, 2008, published in Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, 2008, Vol. 43, No. 5, pp. 60–66.
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Voevodin, A.V. Numerical investigation of the effect of winglets on the evolution of an aircraft vortex wake. Fluid Dyn 43, 725–730 (2008). https://doi.org/10.1134/S0015462808050062
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DOI: https://doi.org/10.1134/S0015462808050062