U.S. patent application number 10/115469 was filed with the patent office on 2003-10-02 for mechanically fuzed high explosive projectile using pryotechnic initiation delay.
Invention is credited to Tasson, Brian B..
Application Number | 20030183111 10/115469 |
Document ID | / |
Family ID | 22361607 |
Filed Date | 2003-10-02 |
United States Patent
Application |
20030183111 |
Kind Code |
A1 |
Tasson, Brian B. |
October 2, 2003 |
Mechanically fuzed high explosive projectile using pryotechnic
initiation delay
Abstract
A projectile which includes a pyrotechnic delay element placed
between the fuze and the high explosive.
Inventors: |
Tasson, Brian B.; (St.
Bonifacius, MN) |
Correspondence
Address: |
VIDAS, ARRETT & STEINKRAUS, P.A.
6109 BLUE CIRCLE DRIVE
SUITE 2000
MINNETONKA
MN
55343-9185
US
|
Family ID: |
22361607 |
Appl. No.: |
10/115469 |
Filed: |
April 2, 2002 |
Current U.S.
Class: |
102/269 |
Current CPC
Class: |
F42B 3/16 20130101 |
Class at
Publication: |
102/269 |
International
Class: |
F42C 009/14 |
Claims
What is claimed is:
1. A projectile of the type having a housing, the housing
containing a fuze and a charge of high explosive, the improvement
comprising: a pyrotechnic delay element placed between the fuze and
the high explosive.
2. The projectile of claim 1 wherein the projectile has front and
rear ends and the fuze is located at the front end of the
projectile.
3. The projectile of claim 1 wherein the pyrotechnic delay element
is a modified IM-68.
4. The projectile of claim 3 wherein the pyrotechnic delay element
comprises: approximately 24.2% barium nitrate; approximately 24.2%
ammonium nitrate; approximately 48.6% Mg/Al Alloy, and
approximately 3.0% Zinc Stearate
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH
[0002] Not applicable
TECHNICAL FIELD
[0003] The present invention relates to a projectile which
incorporates an ignition delay element between the fuze and the
high explosive.
BACKGROUND OF THE INVENTION
[0004] High explosive rounds of ammunition with mechanical fuzes
typically use super quick initiation. This often prevents the
projectile from entering soft or semi-armored targets prior to the
initiation event, which results in little or no damage to the
target. Therefore, adding a delay to allow penetration of the soft
or semi-armored target is desirable.
[0005] Prior devices have attempted to incorporate the delay
element in the fuze itself. This has proven to be an expensive
alternative. Chemically fuzed projectiles also exist, but these
projectiles fail at high impact angles or at extended ranges. Also,
chemically fuzed projectiles do not contain mechanical or physical
barriers that require two separate and independent environments for
fuze arming to occur.
BRIEF SUMMARY OF THE INVENTION
[0006] Applicants have solved the problems discussed above by
utilizing current low cost mechanical fuze designs and with the
addition of a pyrotechnic ignition delay element which is placed
between the fuze and the high explosive.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
[0007] A detailed description of the invention is hereafter
described with specific reference being made to the drawings in
which:
[0008] FIG. 1 is a side view of the inventive projectile.
DETAILED DESCRIPTION OF THE INVENTION
[0009] While this invention may be embodied in many different
forms, there are shown in the drawings and described in detail
herein specific preferred embodiments of the invention. The present
disclosure is an exemplification of the principles of the invention
and is not intended to limit the invention to the particular
embodiments illustrated.
[0010] FIG. 1 shows a side view of a standard projectile 10, which
includes a fuze 12 at the front end of the projectile and a charge
of high explosive at 14. A pyrotechnic delay element 16 is placed
between the fuze 12 and the high explosive 14. In the preferred
embodiment, the pyrotechnic delay element is comprised of a
modified IM-68 incendiary mix, which is comprised of:
[0011] .about.24.2% barium nitrate;
[0012] .about.24.2% ammonium nitrate;
[0013] .about.48.6% Mg/Al Alloy, and
[0014] .about.3.0% Zinc Stearate
[0015] In testing with a 30 mm projectile .about.5 grams of the
modified IM-68 powder were placed and consolidated on top of the
high explosive 14, and this was found to provide an adequate delay
to initiation.
[0016] The above examples and disclosure are intended to be
illustrative and not exhaustive. These examples and description
will suggest many variations and alternatives to one of ordinary
skill in this art. All these alternatives and variations are
intended to be included within the scope of the attached claims.
Those familiar with the art may recognize other equivalents to the
specific embodiments described herein which equivalents are also
intended to be encompassed by the claims attached hereto.
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