DYNAMIC ANALYSIS of a BALLISTIC MISSIBLE MODEL
DOI:
https://doi.org/10.14529/mmp170406Keywords:
missile model, hydrodynamics, hydraulic device, test, air chamber.Abstract
A hydraulic catching device in the form of a blind water-lled pipe is widely used to ensure safety in tests of ballistic missile models in hydrodynamic test tanks. An air chamber is provided at the pipe end wall to avoid a water-hammer eect. The developed math model and methodology for analyzing dynamics of a ballistic model in a hydraulic catching device permit to choose geometrical parameters of a catching device and decelerate the model in preset design conditions. The model longitudinal equation was derived from the Lagrange equation. The proposed methodology was used to create a software program and make trial calculations. The calculation data were compared with the experimental ones obtained during tests in a hydrodynamic tank. The calculation and experimental data are in good compliance proving adequacy and reliability of the developed math model for a deceleration hydrodynamic device. In case of the given Euler number and model mass, the developed math model allows choosing basic parameters of a catching decelerating device which are required for deceleration. The proposed methodology can be used to dene geometrical parameters of a decelerating and catching device for testing a ballistic model in a hydrodynamic tank.References
Degtiar V.G., Pegov V.I.Gidrodinamika podvodnogo starta raket[Hydrodynamics of Rocket Launches from Underwaters], Ìoscow, Machinostroyeniye, 2009. (in Russian)
Pegov V.I., Moshkin I.Yu.Metod raschyota dinamiki ballisticheskoy modeli v gidrobasseyne[A Methodology for Analyzing Dynamics of a Ballistic Model in a Hydrodynamic Tank], Miass, SUSU Electrical Engineering Department, 2016. (in Russian)
Pegov V.I., Cheshko A.D., Moshkin I.Yu, Merkulov Ye.S. [Experimental Modelling and Simulation of Launching Effect on a Submarine].Vzglyad v budushchee - 2016[A Look into
the Future 2016], CDB ME "Rubin", Saint Petersburg, 2015, pp. 553-560. (in Russian)
Benevolski S.V., Burlov V.V., Kazakovski V.P.Ballistika[Ballistics], Penza, Penza artillery engineering institute, 2009. (in Russian)
Dmitrievskiy A.A., Lysenko L.N.Vneshnyaya ballistika[External Ballistics]. Moscow, Machinostroyeniye, 2005. (in Russian)
Lysenko L.N.Navedeniye i navigatsiya ballisticheskikh raket[Guidance and Navigation of Ballistic Missiles]. Moscow, Izd-vo MGTU im. N.E. Baumana, 2007. (in Russian)
De Molleson G.V., Stasenko A.L. [Flow Around the Body with a Gas-Dispersed Jet in a Wide Range of Values of the Braking Parameters].Teplozika vysokikh temperature, 2017, vol. 55,
no. 1, pp. 94-108. (in Russian)
Pakhomov M.A. [Infuence of Evaporation of Droplets on Gas Turbulence and Heat Transfer During a Two-Phase Flow Behind a Sudden Expansion of a Pipe].Teplozika vysokikh temperature, 2016, vol. 54, no. 3, pp. 352-366. (in Russian)
