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Zhurnal Tekhnicheskoi Fiziki, 2021, Volume 91, Issue 3, Pages 542–548
DOI: https://doi.org/10.21883/JTF.2021.03.50535.233-20 (Mi jtf5069) 		 
This article is cited in 2 scientific papers (total in 2 papers)

Experimental instruments and technique

Experimental determination of the drag coefficient of conical penetrators and a penetrator with a flat front end during supersonic motion in sandy soil

S. I. Gerasimovabcd, V. I. Erofeevcd, Yu. F. Travova, A. G. Ioileva, V. V. Pisetskiyb, S. A. Kapinosa, A. P. Kalmykova, N. V. Lapicheva

a Federal State Unitary Enterprise "Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod region
b Sarov Physics Institute
c Institute of Mechanical Engineering Problems, Branch of Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
d Nizhny Novgorod State Technical University
Full-text PDF (4576 kB) Citations (2)
DOI: https://doi.org/10.21883/JTF.2021.03.50535.233-20
Abstract: Experimental studies were carried out to determine the coefficient of resistance when conical and cylindrical impactors penetrate into sandy soil. In experiments, the angle of half-solution of the conical tip of the penetrator varied from 10 to 90 deg. The speed of the penetrator changed in the range of 0.2–2.0 km/s. The average values of the drag coefficient are obtained for conical bodies with quasi-stationary supersonic motion in sandy soil with an average humidity of 7–12%, and for impactors with a flat front end - in sandy soil with a humidity of 0 to 16%. A significant dependence of the drag coefficient of thin cones ($\beta<$ 25$^\circ$) on the speed of movement and the absence of such a coefficient (taking into account the experimental error) for blunt cones and a flat-end striker is shown.
Keywords: high-speed penetration, conical penetrator, penetrator with a flat front end, sand, resistance coefficient.
Received: 22.07.2020
Revised: 14.09.2020
Accepted: 01.10.2020
English version:
Technical Physics, 2021, Volume 66, Issue 3, Pages 528–534
DOI: https://doi.org/10.1134/S1063784221030087
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: S. I. Gerasimov, V. I. Erofeev, Yu. F. Travov, A. G. Ioilev, V. V. Pisetskiy, S. A. Kapinos, A. P. Kalmykov, N. V. Lapichev, “Experimental determination of the drag coefficient of conical penetrators and a penetrator with a flat front end during supersonic motion in sandy soil”, Zhurnal Tekhnicheskoi Fiziki, 91:3 (2021), 542–548; Tech. Phys., 66:3 (2021), 528–534
Citation in format AMSBIB
\Bibitem{GerEroTra21}
\by S.~I.~Gerasimov, V.~I.~Erofeev, Yu.~F.~Travov, A.~G.~Ioilev, V.~V.~Pisetskiy, S.~A.~Kapinos, A.~P.~Kalmykov, N.~V.~Lapichev
\paper Experimental determination of the drag coefficient of conical penetrators and a penetrator with a flat front end during supersonic motion in sandy soil
\jour Zhurnal Tekhnicheskoi Fiziki
\yr 2021
\vol 91
\issue 3
\pages 542--548
\mathnet{http://mi.mathnet.ru/jtf5069}
\crossref{https://doi.org/10.21883/JTF.2021.03.50535.233-20}
\elib{https://elibrary.ru/item.asp?id=45559746}
\transl
\jour Tech. Phys.
\yr 2021
\vol 66
\issue 3
\pages 528--534
\crossref{https://doi.org/10.1134/S1063784221030087}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85104011778}
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    Citing articles in Google Scholar: Russian citations, English citations
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