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IssuesArchive of Issues2011-2pp.311-324

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S.V. Leonov, V.I. Morozov, and A.T. Ponomarev, "Shape Modeling and Strength Analysis of Parachutes," Mech. Solids. 46 (2), 311-324 (2011)
Year 2011 Volume 46 Number 2 Pages 311-324
DOI 10.3103/S0025654411020208
Title Shape Modeling and Strength Analysis of Parachutes
Author(s) S.V. Leonov (Prof. Zhukovskii and Gagarin Air Force Engineering Academy, Planetnaya3, Moscow, 125190 Russia, sertak@orc.ru)
V.I. Morozov (Prof. Zhukovskii and Gagarin Air Force Engineering Academy, Planetnaya3, Moscow, 125190 Russia)
A.T. Ponomarev (Prof. Zhukovskii and Gagarin Air Force Engineering Academy, Planetnaya3, Moscow, 125190 Russia)
Abstract We generalize a discrete elastic scheme for automated computer-aided analysis of shaping, stress-strain state, and safety factors of structural elements of single-shell parachutes; various canopy layouts and design features of the parachutes are considered. The developed algorithms and programs are based on the sketch diagram of the parachute design, the lumped mass method, and the database of mass, stiffness, and strength characteristics of parachute structural materials. As the design features of parachutes, we consider slots and structural vents in the canopy, irregular reinforcing framework, ribbing, special pockets at the canopy outer edge, non-flat initial configuration of the canopy, the use of inside (including central) lines in addition to the main, outside shroud lines, canopies made from different fabrics that have different strength and air permeability, and others. It is also possible to consider functional and military damage of the parachute structure, which affect its durability. Specific examples are give to demonstrate the capabilities of the automated computational system.
Keywords parachute, design features, modeling, lumped mass method, shaping, strength
References
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3.  V. I. Morozov, A. T. Ponomarev, and O. V. Rysev, Mathematical Modeling of Complex Aeroelastic Systems (Nauka, Moscow, 1995) [in Russian].
4.  A. G. Gorshkov, V. I. Morozov, A. T. Ponomarev, and F. N. Shklyarchuk, Aerohydroelasticity of Structures (Nauka, Fizmatlit, Moscow, 2000) [in Russian].
5.  V. V. Lyalin, V. I. Morozov, and A. T. Ponomarev, Parachute Systems. Problems and Methods of Their Solution (Fizmatlit, Moscow, 2009) [in Russian].
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8.  V. I. Morozov, A. T. Ponomarev, F. G. Gerasimato, and V. A. Androsenkov, "Simulation of Loading and Shaping Of An Axially-Symmetric Parachute at Opening," Polet, No. 12, 25-31 (2007); "Simulation Of An Axially-Symmetric Parachute Stress-Strain State at Opening," Polet, No. 7, 25-31 (2009).
9.  V. A. Androsenkov, R. M. Zaichuk, and A. T. Ponomarev, "Mathematical Modeling of a Cross-Shaped Parachute Development," Izv. Vyssh. Uchebn. Zaved. Aviats. Tekhnika, No. 1, 65-67 (2007).
10.  N. L. Gorskii, "Numerical Method for Calculating a Soft Shell Based on a Discrete Model of the Body," in Dynamical Systems, No. 6 (Vishcha Shkola, Kiev, 1987), pp. 26-30 [in Russian].
11.  V. A. Aparinov and A. V. Dvorak, "Method of Discrete Closed Vortex Frames," in Computer Application in Studies of Aerodynamic Characteristics of Aircraft (Trudy VVIA, Moscow, 1986), No. 1313, 424-432 (1986) [in Russian].
12.  S. M. Belotserkovskii and M. I. Nisht, Separated and Unseparated Flow of Ideal Fluid about Thin Wings (Nauka, Moscow, 1978) [in Russian].
13.  V. A. Aparinov, R. M. Zaichuk, and A. T. Ponomarev, "Modeling Shape Formation, Deformation, and Loading of Parachutes for Small Subsonic Velocities," Izv. Akad. Nauk. Mekh. Tverd. Tela, No. 3, 172-189 (2001) [Mech. Solids (Engl. Transl.) 36 (3), 146-156 (2001)]; "Simulation of Loading of Parachutes with Canopy Deformation Being Taken into Account," Izv. Akad. Nauk. Mekh. Tverd. Tela, No. 3, 155-172 (2003) [Mech. Solids (Engl. Transl.) 38 (3), 124-138 (2003)].
Received 22 December 2010
Link to Fulltext http://www.springerlink.com/content/p381876tj1196523/
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