Non-cylindrical mine drop experiment

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Author
Chu, Peter C.
Allen, Charles
Fleischer, Peter
Date
2006-05Metadata
Show full item recordAbstract
The Navy’s Impact Burial Model (IMPACT35)
predicts the cylindrical mine trajectory in air and water
columns and burial depth and orientation in sediment.
Impact burial calculations are derived primarily from the
sediment characteristics and from the mine’s threedimensional
air and water phase trajectories. Accurate burial
prediction requires that the model’s water phase trajectory
reasonably mimics the object’s true trajectory. In order to
determine what effect varying the shape to more closely match
real-world mines has on the shape’s water phase trajectory,
Mine Drop Experiment II was conducted. The experiment
consisted of dropping four separate types of shapes into a
water column, and the resultant falls were filmed from two
nearly orthogonal angles. Initial drop position, initial
velocities, and the drop angle were controlled parameters.
Observed trajectories were highly variable, but several broad
conclusions were reached: the Manta and Rockan shapes’
trajectories were much more complex than the Sphere and
Gumdrop trajectories; the denser Gumdrop shape had the
fastest and straightest drops overall to –250 cm depth; because
of important factors, the dispersion of all four shapes was
wide and variable. The data collected from the experiment
can be used to develop and validate the mine Impact Burial
Prediction Model with operational, non-cylindrical mine
shapes.
Description
Seventh Monterey International Symposium on Technology and Mine Problems, Society for Counter-Ordnance Technology, Monterey, California
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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