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Proceedings Paper

Behaviours Of Water Entry Bullets And Cavities At High Entry Speeds
Author(s): Shoji Kageyama; Tositika Usui
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Paper Abstract

An experimental study of the behaviour of a bullet(caliber 7.62mm Ball M2) at an oblique water entry has been performed. The entry speed is adjusted to a value of about 300m/s. The range of entry angles is from 24 to 27 degrees. It is shown that the bullet runs stably only when the bullet travels broadsiding with the nose-down and during this period the trajectory can be fitted by an ana-lytical expression. After this phase the cavity collapses near the lowest region of the bullet trajectory and then the bullet goes up.

Paper Details

Date Published: 27 July 1979
PDF: 4 pages
Proc. SPIE 0189, 13th Intl Congress on High Speed Photography and Photonics, (27 July 1979); doi: 10.1117/12.957700
Show Author Affiliations
Shoji Kageyama, National Defense Academy (Japan)
Tositika Usui, National Defense Academy. (Japan)


Published in SPIE Proceedings Vol. 0189:
13th Intl Congress on High Speed Photography and Photonics
Shin-Ichi Hyodo, Editor(s)

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