METHOD FOR CALCULATING THE HYDRODYNAMIC CHARACTERISTICS OF A CIRCUIT PLANNING ON THE UNDISTURBED SURFACE OF AN INCOMPRESSIBLE, WEIGHTLESS FLUID AT LOW SUBSONIC SPEEDS

Authors
Keywords:
Array, Array, Array, Array, Array, Array
Abstract

This paper presents a method for calculating the hydrodynamic characteristics of a circuit interacting with the surface of an undisturbed, incompressible, weightless fluid at low subsonic speeds, to assess loads on the lifting surface in the interest of evaluating hydrodynamic loads on the wetted surface of a transport category aircraft fuselage during an emergency landing on a water surface. The problem is solved in a two-dimensional nonlinear unsteady formulation for an inviscid incompressible weightless fluid. It is assumed that the profile is streamlined without separation from the leading edge. The method uses the discrete vortex method for numerical implementation, where the lifting surface and the vortex wake shed from the trailing edge are modeled with discrete vortices. The wing analogy is used to obtain the hydrodynamic characteristics.  

Author Biography
  1. Oleksandr Rasstrygin, Central Scientific Research Institute of Armament and Military Equipment of the Armed Forces of Ukraine

    Doctor of Technical Sciences, Professor

References

Simonov, A.B. (1998). Aviation Accidents: A Review. Miass: Geotur. 214 p.

Gudkov, A.I. & Leshakov, P.S. (1972). Methods and Techniques of Aircraft Strength Flight Testing. M.: Mashinostroenie. 432 p.

Aviation Regulations. P. 25. Airworthiness Standards for Transport Category Airplanes. Interstate Aviation Committee. 1994. 368 p.

Sokolyansky, V.P., Shorygin, O.P., Belyaevsky, A.N. & Gontsova, L.G. (2004). Study of Hydrodynamics of Planing of Smooth-Shaped Bodies. Proc. of 5th Scient. Conf. on Hydroaviation «Gidroaviasalon 2004». M. Pp. 79—86.

Logvinovich, G.V. (1973). Hydrodynamics of Free-Surface Flows. K.: Naukova Dumka. 246 p.

Logvinovich, G.V. et al. (1985). Flows with Free Boundaries. K.: Naukova Dumka. 296 p.

Kosourov, K.F. (1961). Theoretical Foundations of Hydroaviation (Hydromechanics of Seaplanes). M.: Voenizdat. 600 p.

Wagner, H. (1932). On Impact and Planing Processes on Liquid Surfaces. ZAMM. Iss. 4. Pp. 193—215. DOI: https://doi.org/10.1002/zamm.19320120402

Pierson, J.D. (1950). The Penetration of a Fluid Surface by a Wedge. Inst. of Aeronautical Sciences. Rep. 381. P. 32.

Kessenikh, A.N. (1973). Landing Impact of a Seaplane. TsAGI Reports. Iss. 1473. 20 p.

Tikhonov, A.I. & Kolosov, G.K. (1959). Hydrodynamic Characteristics of Flat-Wedge Plates under Steady Planing and Oblique Water Entry. Collected Works on Hydrodynamics. TsAGI. M. Pp. 140—166.

Sokolov, V.A. (1959). Hydrodynamic Lift of Flat-Wedge Bodies Moving at High Speeds over Waves. Collected Works on Hydrodynamics. TsAGI. M. Pp. 183—210.

Tikhonov, A.I. (1959). Hydrodynamic Forces Acting on Flat-Wedge Plates during Unsteady Planing. Collected Works on Hydrodynamics. TsAGI. M. Pp. 167—182.

Kovrizhnykh, L.D. & Tikhonov, A.I. (1989). Planing of Wedge Plates over Waves. TsAGI Scientific Notes. Vol. XX. No. 1. Pp. 13—22.

Mayboroda, A.N. & Rasstrygin, A.A. (1993). Mathematical Modeling of Hydrodynamics of Bodies Crossing Free Liquid Surface. Proc. 1st Int. Conf. on Ground-Effect Vehicles. Irkutsk. May 25–27. Pp. 234—246.

Rasstrygin, A.A., Mayboroda, A.N. & Mikhalochkin, N.A. (2004). Methodological Principles of Synthesizing Methods for Determining Hydrodynamic Characteristics of Water-Based and Amphibious Aircraft. Proc. VI Int. Scient. and Techn. Conf. «AVIA-2004». K.: NAU. Vol. 3. Pp. 33.72—33.75.

Fundamentals of Military-Technical Research: Theory and Applications. Weapon Systems and Military Equipment Synthesis (ed. O.P. Kovtunenko). K.: NAU. 2011. Vol. 1. 500 p.

Mayboroda, A. & Rasstrygin, A. Investigation of Mathematical Models for Hydro-Vehicles Crossing Liquid Surface. J. of Engineering Science and Technology. Taylor’s Univ. Vol. 14. Iss. 3. June 2019. Pp. 1451—1465.

Korvin-Kroukovsky, B.V., Savitsky, D. & Lehman, W.F. (1949). Wave Contours in the Wake of a 30° Deadrise Planing Surface. Stevens Inst. of Technology. Rep. No. 229. 50 p.

Study of Water Landing of the AN-140 Aircraft Model. Scientific and Technical Report. M.: TsAGI. 1977. 37 p.

Gontsova, L.G., Shorygin, O.P. & Belyaevsky, A.N. (2002). Lifting Bodies with Smooth Forms Gliding Along a Fluid Surface. Proc. Int. Summer Scientific School «High-Speed Hydrodynamics». Pp. 285—290.

Sokolyansky, V.P., Gontsova, L.G., Shorygin, O.P. & Belyaevsky, A.N. (2004). Separated Flows Around Smooth-Shape Bodies During Gliding. Abstracts. Int. Conf. «High Speed Flow Fundamental Problems». Pp. 206—207.

Gontsova, L.G., Shorygin, O.P. & Belyaevsky, A.N. (2004). Features of Forced Water Landing of Different Aircraft Types. Proc. of 5th Scient. Conf. on Hydroaviation «Gidroaviasalon 2004». M. Pp. 87—96.

Belotserkovsky, S.M. (1968). Calculation of Flow Around Arbitrary Wing Shapes Over a Wide Range of Angles of Attack. USSR Acad. of Scien. J.: Fluid and Gas Mechanics. No. 4. Pp. 143—151. DOI: https://doi.org/10.1007/BF01019187

Belotserkovsky, S.M. & Nisht, M.I. (1978). Separated and Unseparated Flow Around Thin Wings in Ideal Fluid. M.: Nauka. 362 p.

Winckelmans, G., Code, R., Dufresne, L. & Capart, R. (2005). Vortex Methods and Their Application to Trailing Wake Vortex Simulations. Comptes Rendus Physique. Vol. 6(4/5). Pp. 467—486. DOI: https://doi.org/10.1016/j.crhy.2005.05.001

Winckelmans, G., Cottin, C., Daeninck, G., & Leweke, T. Experimental and Numerical Study of Counter-Rotating Vortex Pair Dynamics in Ground Effect. 18th French Congress on Mechanics (CFM). Grenoble, France. August 27—31. 2007. Paper CFM2007-1131.

Rasstrygin, O.O., Mayboroda, O.M. & Braga, M.M. (1999). Determination of Fluid Pile-Up During Submersion of a Flat Contour. Collected Scientific Works of KIVPS. K.: KIVPS. Iss. 6. Pp. 24—28.

Rasstrygin, O.O. (2008). Methodology for Determining Fluid Pile-Up and Free Boundary Shape During Submersion on Incompletely Wetted Structural Width. K.: Coll. Scient. Works of CNDІ OVT ZSU. Iss. 21. Pp. 123—128.

Sedov, L.I. (1981). Plane Problems in Hydrodynamics and Aerodynamics. M.: Nauka. 384 p.

Cover Image
Published
2025-06-30
Section
AIRCRAFT ARMAMENT & FACILITIES
License

Copyright (c) 2025 Вадим Каніщев,Олександр Расстригін,Андрій Варсєгов ,Олена Ісаєнко

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

METHOD FOR CALCULATING THE HYDRODYNAMIC CHARACTERISTICS OF A CIRCUIT PLANNING ON THE UNDISTURBED SURFACE OF AN INCOMPRESSIBLE, WEIGHTLESS FLUID AT LOW SUBSONIC SPEEDS. (2025). Weapons and Military Equipment, 46(2), 22-28. https://doi.org/10.34169/2414-0651.2025.2(46).22-28

Most read articles by the same author(s)