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Title: Three-phase hypervelocity projectile launcher

Abstract

A hypervelocity projectile launcher for use in perforating borehole casings provides improved penetration into the surrounding rock structure. The launcher includes a first cylinder of explosive material that defines an axial air-filled cavity, a second cylinder of explosive material defining an axial frustum-shaped cavity abutting and axially aligned with the first cylinder. A pliant washer is located between and axially aligned with the first and second cylinders. The frustum shaped cavity is lined with a metal liner effective to form a projectile when the first and second cylinders are detonated. The washer forms a unique intermediate projectile in advance of the liner projectile and enables the liner projectile to further penetrate into and fracture the adjacent rock structure.

Inventors:
 [1];  [1];  [1];  [1]
  1. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
869631
Patent Number(s):
5370055
Assignee:
Regents of University of California, Office of Technology (Alameda, CA)
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
three-phase; hypervelocity; projectile; launcher; perforating; borehole; casings; provides; improved; penetration; surrounding; rock; structure; cylinder; explosive; material; defines; axial; air-filled; cavity; defining; frustum-shaped; abutting; axially; aligned; pliant; washer; located; cylinders; frustum; shaped; lined; metal; liner; effective; form; detonated; forms; unique; intermediate; advance; enables; penetrate; fracture; adjacent; material defining; provides improved; explosive material; axially aligned; borehole casing; metal liner; shaped cavity; surrounding rock; improved penetration; hypervelocity projectile; metal line; velocity projectile; projectile launcher; axially align; borehole casings; /102/89/175/

Citation Formats

Fugelso, L Erik, Langner, Gerald C, Burns, Kerry L, and Albright, James N. Three-phase hypervelocity projectile launcher. United States: N. p., 1994. Web.
Fugelso, L Erik, Langner, Gerald C, Burns, Kerry L, & Albright, James N. Three-phase hypervelocity projectile launcher. United States.
Fugelso, L Erik, Langner, Gerald C, Burns, Kerry L, and Albright, James N. Sat . "Three-phase hypervelocity projectile launcher". United States. https://www.osti.gov/servlets/purl/869631.
@article{osti_869631,
title = {Three-phase hypervelocity projectile launcher},
author = {Fugelso, L Erik and Langner, Gerald C and Burns, Kerry L and Albright, James N},
abstractNote = {A hypervelocity projectile launcher for use in perforating borehole casings provides improved penetration into the surrounding rock structure. The launcher includes a first cylinder of explosive material that defines an axial air-filled cavity, a second cylinder of explosive material defining an axial frustum-shaped cavity abutting and axially aligned with the first cylinder. A pliant washer is located between and axially aligned with the first and second cylinders. The frustum shaped cavity is lined with a metal liner effective to form a projectile when the first and second cylinders are detonated. The washer forms a unique intermediate projectile in advance of the liner projectile and enables the liner projectile to further penetrate into and fracture the adjacent rock structure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

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