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Experimental Determination of the Drag Coefficient of Conical Penetrators and a Penetrator with a Flat Front End during Supersonic Motion in Sandy Soil

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Abstract

In this paper, we experimentally determine the drag coefficient when conical and cylindrical impactors penetrate into sandy soil. In the experiments, the half-opening angle of the conical tip of the penetrator (indenter) varied from 10° to 90°. The velocity of indenter movement varied in the range of 0.2–2.0 km/s. The average values of the drag coefficient are obtained for conical bodies during quasi-stationary supersonic motion in sandy soil with an average moisture content of 7–12% and for indenters with a flat front end in sandy soil with a moisture content of 0–16%. A significant dependence of the drag coefficient of thin cones (β < 25°) on the movement velocity and the absence of such a dependence (taking into account the experimental error) for obtuse cones and an indenter with a flat end were shown.

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Authors and Affiliations

  1. Russian Federal Nuclear Center, All-Russian Research Institute of Experimental Physics, 607188, Sarov, Nizhny Novgorod oblast, Russia

    S. I. Gerasimov, Yu. F. Travov, A. G. Ioilev, S. A. Kapinos, A. P. Kalmykov & N. V. Lapichev

  2. Sarov Institute of Physics and Technology, National Research Nuclear University MEPhI, 607186, Sarov, Nizhny Novgorod oblast, Russia

    S. I. Gerasimov & V. V. Pisetskii

  3. Institute of Mechanical Engineering Problems, Branch of Institute of Applied Physics, Russian Academy of Sciences, 603024, Nizhny Novgorod, Russia

    S. I. Gerasimov & V. I. Erofeev

  4. Alekseev Nizhny Novgorod State Technical University, 603950, Nizhny Novgorod, Russia

    S. I. Gerasimov & V. I. Erofeev

Authors
  1. S. I. Gerasimov
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  2. V. I. Erofeev
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  3. Yu. F. Travov
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  4. A. G. Ioilev
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  5. V. V. Pisetskii
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  6. S. A. Kapinos
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  7. A. P. Kalmykov
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  8. N. V. Lapichev
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Correspondence to S. I. Gerasimov.

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Translated by A. Ivanov

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Gerasimov, S.I., Erofeev, V.I., Travov, Y.F. et al. Experimental Determination of the Drag Coefficient of Conical Penetrators and a Penetrator with a Flat Front End during Supersonic Motion in Sandy Soil. Tech. Phys. 66, 528–534 (2021). https://doi.org/10.1134/S1063784221030087

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  • DOI: https://doi.org/10.1134/S1063784221030087

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