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Proceedings Paper

Comparison Of High Speed Movie And Flash X-Ray Measurement Of The Translational And Rotational Motions Of Projectiles Penetrating Gelatin
Author(s): Eugene T. Roecker
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Paper Abstract

Projectiles penetrating a gelatin block were simultaneously mea-sured by a high speed movie camera, Dynafax, and by a sequential, orthogonal, flash x-ray system. The eight orthogonal views of the x-ray system provided position and orientation of the projectiles vs, time From onset of tumble in the gelatin, owing to gyroscopic in-stability, the growth of yaw was the same for each round in a re-plicated set. This phenomenon provided a legitimate procedure for pooling the x-ray data, giving well determined curves of velocity decay and yaw growth. The movie camera observed the progress of the cavity formed by the projectile. The resulting velocity decay of the cavity tip was compared to that of the projectile as measured by the x-ray technique.

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: 10.1117/12.957599
Show Author Affiliations
Eugene T. Roecker, US Army Ballistic Research Laboratory (United States)

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

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