Engineering Journal: Science and InnovationELECTRONIC SCIENCE AND ENGINEERING PUBLICATION
Certificate of Registration Media number Эл #ФС77-53688 of 17 April 2013. ISSN 2308-6033. DOI 10.18698/2308-6033
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Article

Effect of induced waves in the reservoir on piston acceleration in a single-stage gas gun

Published: 15.08.2019

Authors: Bykov N.V.

Published in issue: #8(92)/2019

DOI: 10.18698/2308-6033-2019-8-1908

Category: Mechanics | Chapter: Mechanics of Liquid, Gas, and Plasma

The purpose of the paper was to study the effect of induced gas perturbations in the reservoir on the ballistic characteristics of single-stage gas guns. Two ways of waves generation at the initial moment are considered: by means of a non-uniform initial distribution of gas parameters and by creating a shock wave propagating from the bottom of the reservoir by external forces. The study is based on the numerical solution of one-dimensional gas-dynamic equations on a moving grid. Findings of research show that for relatively large (compared to the accelerating gas mass) mass of the projectiles, the wave processes induced by inhomogeneous filling lead to an increase in the muzzle velocity 1.4 times, and the shock waves generation by an external source — 1.8 times.

  


References
[1] Seiler F., Igra O., ed. Hypervelocity Launchers. Springer, 2016, 300 p.
[2] Zlatin N.A., Krasilshchikov A.P., Mishin G.I., Popov N.N. Ballisticheskie ustanovki i ikh primenenie v eksperimentalnykh issledovaniyakh [Ballistic ranges and their application in experimental research]. Moscow, Nauka Publ., 1974, 344 p.
[3] Pavlenko A.V., Balabin S.I., Kozelkov O.E., Kazakov D.N. Pribory i tekhnika eksperimenta — Instruments and Experimental Techniques, 2013, vol. 56 (4), pp. 482–484.
[4] Jones D.R., Chapman D.J., Eakins D.E. A gas gun based technique for studying the role of temperature in dynamic fracture and fragmentation. J. Appl. Phys., 2013, vol. 114, p. 173508.
[5] Horák V., Do Duc L., Vítek R., Beer S., Mai Q.H. Prediction of the Air Gun Performance. Advances in Military Technology, 2014, vol. 9 (1), pp. 31–44.
[6] Grigorev V.V., Isakov S.N., Petrov R.L., Yurkin S.V. Zhurnal tekhnicheskoy fiziki — Technical Physics. The Russian Journal of Applied Physics, 2006, vol. 51 (3), pp. 367–372.
[7] Bykov N.V. Prikladnaya mekhanika i tekhnicheskaya fizika — Journal of Applied Mechanics and Technical Physics, 2019, vol. 60, no. 3, pp. 29–37.
[8] Bykov N.V. Inzhenernyy zhurnal: nauka i innovatsii — Engineering Journal: Science and Innovation, 2019, iss. 2 (86). DOI: 10.18698/2308-6033-2019-2-1852
[9] Golubyatnikov A.N., Leontyev N.E. Trudy matematicheskogo instituta im. V.A. Steklova — Proceedings of the Steklov Institute of Mathematics, 1998, vol. 223, pp. 118–122.
[10] Golubyatnikov A.N. Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika (Bulletin of Moscow University. Series 1. Mathematics. Mechanics), 1995, no. 6, pp. 59–61.
[11] Bykov N.V. Udarno-volnovoy podgon v odnostupenchatykh metatelnykh gazovykh ustanovkakh [Shock-wave adjustment in single-stage gas guns]. XXV Vserossiiskiy seminar s mezhdunarodnym uchastiem po struynym, otryvnym i nestatsionarnym techeniyam [XXV All-Russian seminar with international participation on jet, separated and unsteady flows]. St. Petersburg, BSTU “VOENMEH” named after D.F. Ustinov Publ., 2018, pp. 56–57.