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Vestnik Tomskogo Gosudarstvennogo Universiteta. Matematika i Mekhanika, 2020, Number 68, Pages 80–94
DOI: https://doi.org/10.17223/19988621/68/8
(Mi vtgu817)
 

This article is cited in 1 scientific paper (total in 1 paper)

MECHANICS

Study on the effects of gun barrel vibrations on the firing angle of a projectile

A. M. Lipanova, I. G. Rusyakb, V. G. Sufiyanovb

a Keldysh Institute of Applied Mathematics Russian Academy of Sciences, Moscow, Russian Federation
b Kalashnikov Izhevsk State Technical University, Izhevsk, Russian Federation
Full-text PDF (470 kB) Citations (1)
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Abstract: The problem of longitudinal and transverse vibrations of an artillery gun barrel during firing is considered. Unsteady stress-strain equations for the gun barrel are solved together with equations of internal ballistics. Ballistic parameters and dynamics of the projectile motion inside a gun bore are determined using a thermodynamic approach. Formulation of the vibration problem accounts for the initial gravitational deflection of the barrel, mass forces, varying distribution of the propellant gas pressure, and the effect of moving projectile mass on gun barrel vibrations. To solve the equations for longitudinal and transverse gun barrel vibrations, difference schemes are obtained by integro-interpolation method. It has been revealed that the solution to the problem in a one-dimensional formulation is almost as accurate as the results obtained in a three-dimensional formulation. Moreover, the former case is significantly less time consuming. The decay time of the barrel longitudinal vibrations after shot is shown to be much less than the time between shots in the burst. Deviations of the transverse barrel vibrations from the initial firing angle are more significant, and the vibration decay time is longer than the time between shots, which affects the accuracy of single shots and the dispersion of shells in the burst mode. Thus, when firing from a 30 mm gun at the range of 1 km, lateral vibrations lead to a change in the height of target hit point by 8.7 m.
Keywords: internal ballistics, gun barrel vibrations, mathematical model, computational algorithm, firing angle, gun elevation angle.
Funding agency Grant number
Russian Foundation for Basic Research 20-01-00072\20
The reported study was funded by RFBR, project number 20-01-00072\20.
Received: 30.06.2020
Bibliographic databases:
Document Type: Article
UDC: 004.942, 623.526.4
Language: Russian
Citation: A. M. Lipanov, I. G. Rusyak, V. G. Sufiyanov, “Study on the effects of gun barrel vibrations on the firing angle of a projectile”, Vestn. Tomsk. Gos. Univ. Mat. Mekh., 2020, no. 68, 80–94
Citation in format AMSBIB
\Bibitem{LipRusSuf20}
\by A.~M.~Lipanov, I.~G.~Rusyak, V.~G.~Sufiyanov
\paper Study on the effects of gun barrel vibrations on the firing angle of a projectile
\jour Vestn. Tomsk. Gos. Univ. Mat. Mekh.
\yr 2020
\issue 68
\pages 80--94
\mathnet{http://mi.mathnet.ru/vtgu817}
\crossref{https://doi.org/10.17223/19988621/68/8}
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  • This publication is cited in the following 1 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Вестник Томского государственного университета. Математика и механика
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    Abstract page:224
    Full-text PDF :245
    References:30
     
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