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Title: Precision flyer initiator

Abstract

A precision flyer initiator forms a substantially spherical detonation wave in a high explosive (HE) pellet. An explosive driver, such as a detonating cord, a wire bridge circuit or a small explosive, is detonated. A flyer material is sandwiched between the explosive driver and an end of a barrel that contains an inner channel. A projectile or "flyer" is sheared from the flyer material by the force of the explosive driver and projected through the inner channel. The flyer than strikes the HE pellet, which is supported above a second end of the barrel by a spacer ring. A gap or shock decoupling material delays the shock wave in the barrel from predetonating the HE pellet before the flyer. A spherical detonation wave is formed in the HE pellet. Thus, a shock wave traveling through the barrel fails to reach the HE pellet before the flyer strikes the HE pellet. The precision flyer initiator can be used in mining devices, well-drilling devices and anti-tank devices.

Inventors:
 [1];  [1]
  1. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871575
Patent Number(s):
5756925
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
precision; flyer; initiator; forms; substantially; spherical; detonation; wave; explosive; pellet; driver; detonating; cord; wire; bridge; circuit; detonated; material; sandwiched; barrel; contains; inner; channel; projectile; sheared; force; projected; strikes; supported; spacer; gap; shock; decoupling; delays; predetonating; formed; traveling; fails; reach; mining; devices; well-drilling; anti-tank; detonation wave; shock wave; bridge circuit; substantially spherical; wave traveling; precision flyer; inner channel; flyer material; flyer initiator; /102/86/

Citation Formats

Frank, Alan M., and Lee, Ronald S. Precision flyer initiator. United States: N. p., 1998. Web.
Frank, Alan M., & Lee, Ronald S. Precision flyer initiator. United States.
Frank, Alan M., and Lee, Ronald S. Thu . "Precision flyer initiator". United States. https://www.osti.gov/servlets/purl/871575.
@article{osti_871575,
title = {Precision flyer initiator},
author = {Frank, Alan M. and Lee, Ronald S.},
abstractNote = {A precision flyer initiator forms a substantially spherical detonation wave in a high explosive (HE) pellet. An explosive driver, such as a detonating cord, a wire bridge circuit or a small explosive, is detonated. A flyer material is sandwiched between the explosive driver and an end of a barrel that contains an inner channel. A projectile or "flyer" is sheared from the flyer material by the force of the explosive driver and projected through the inner channel. The flyer than strikes the HE pellet, which is supported above a second end of the barrel by a spacer ring. A gap or shock decoupling material delays the shock wave in the barrel from predetonating the HE pellet before the flyer. A spherical detonation wave is formed in the HE pellet. Thus, a shock wave traveling through the barrel fails to reach the HE pellet before the flyer strikes the HE pellet. The precision flyer initiator can be used in mining devices, well-drilling devices and anti-tank devices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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