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Abstract:
A considerable amount of the energy released from the detonation of an explosive charge can be captured using a metal liner, which then can be focused to form a projectile for boring a hole in a target. Such a hole drilling explosive charge is frequently used in demolition operations for rapid boring of holes, which have to permit insertion or passage of fixed diameter main demolition charges. Because of the stringent hole requirements, the penetrator that is ideally suited for these applications has to consist of two separate penetrators: a hole driller and a hole cleaner. The shape and the parameters of this complex penetrator are crucial for the charge effectiveness. This work offers a detailed discussion on a number of basic issues involved in designing a liner profile that is capable of producing such a penetrator. Based on results of numerical experimentation, the validity of a design rationale that formation of the hole driller and hole cleaner are mutually independent was established and proven experimentally. Numerical simulations confirmed the validity of the accepted design rationale; experiments indicated good agreement with the simulations and proved the feasibility of producing a robust penetrator of this complex shape.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. for 20 Oct 1998 |
| Pages: |
33 |
| Report Date: |
AUG 2001 |
| Report Number: |
A323504 |
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