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Experiments on Supercavitating Projectiles Fired Horizontally Into Water

[+] Author Affiliations
Martin J. Schaffar, Christian J. Rey, Gérard S. Boeglen

ISL, Saint-Louis, France

Paper No. FEDSM2002-31004, pp. 355-359; 5 pages
doi:10.1115/FEDSM2002-31004
From:
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 1: Fora, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3615-0 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME

abstract

The study of supercavitating projectiles has become an important research subject in the last years and some experimental results are presented here, obtained on supercavitating projectiles fired horizontally into a small test reservoir (1 × 0.5 × 0.5 m3 ). During these tests spherical, cylindrical and truncated cone projectiles were fired with velocities from 600 to 1000 m/s. The experimental results are compared with the OTi-HULL code (a penetration code of continuum mechanics, useful here but not very well adapted) and with Levinson’s and Serebryakov’s formulas. The comparison shows that: 1) the HULL code underestimates the cavity width by 20 to 40% except for the spherical projectiles, 2) the widths obtained with the Levinson and Serebryakov formulas are close to one another but are also inferior to the experimental values (nearly 10%), 3) the experimental drag coefficients approach the theoretical ones but the HULL code overestimates the drag by nearly 10 to 20%. These experiments confirm the feasibility of these tests at ISL and they will be continued in a larger reservoir.

Copyright © 2002 by ASME
Topics: Projectiles , Water

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