U.S. patent number 3,881,416 [Application Number 05/353,930] was granted by the patent office on 1975-05-06 for choked flechette weapon system.
This patent grant is currently assigned to The United States of America as represented by the Secretary of the Army. Invention is credited to Thomas E. Dilworth, Jr..
United States Patent |
3,881,416 |
Dilworth, Jr. |
May 6, 1975 |
Choked flechette weapon system
Abstract
A flechette weapon system for ejecting a plurality of flechettes
from a wead of a missile in a uniform pattern. The system includes
a launch tube provided with a choked section through which the
flechettes pass when propelled by an explosive propelling force.
The flechettes are carried by a slotted plastic container which
contracts as it passes through the choked tube section.
Inventors: |
Dilworth, Jr.; Thomas E.
(Huntsville, AL) |
Assignee: |
The United States of America as
represented by the Secretary of the Army (Washington,
DC)
|
Family
ID: |
23391196 |
Appl.
No.: |
05/353,930 |
Filed: |
April 23, 1973 |
Current U.S.
Class: |
102/506;
102/703 |
Current CPC
Class: |
F42B
12/64 (20130101); Y10S 102/703 (20130101) |
Current International
Class: |
F42B
12/64 (20060101); F42B 12/02 (20060101); F42b
013/48 (); F42b 007/00 () |
Field of
Search: |
;102/34.4,37.6,43C,63,69,DIG.2 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Pendegrass; Verlin R.
Attorney, Agent or Firm: Gibson; Robert P. Edelberg;
Nathan
Claims
I claim:
1. A flechette weapon system for ejecting at high velocity a
plurality of flechettes from a warhead of a missile comprising: a
launch tube in said missile, one end of said launch tube having a
smaller inner diameter than the remainder of the tube; an ogive tip
for closing said launch tube, said ogive tip having an inwardly
extending flange and a depending collar thereon for mating with
said launch tube; a container for stacking said flechettes in said
launch tube; said container being provided with a plurality of
slots around its periphery to allow inner compression of the
container as it passes through said smaller inner tube diameter; an
ejection piston disposed in said launch tube engaging said
container and said flechettes and pressurizing means in said launch
tube to provide pressure for actuating said ejection piston and
ejecting said flechettes.
Description
BACKGROUND OF THE INVENTION
This invention relates to the field of flechette weapon systems and
means for controlling dispersion and increasing the velocity of the
flechettes. Previous systems had problems in that individual
flechettes exited the warhead at various velocities in an
indiscriminate target pattern. These deficiencies necessitated the
use of a large number of flechettes to obtain a reasonable degree
of required performance.
SUMMARY OF THE INVENTION
The present invention has overcome the above stated problems by
providing a choked section in the missile warhead and a contracting
flechette container. The addition of these elements cause the
flechettes to exit the warhead at a constant individual flechette
velocity and in a uniform pattern thereby attaining a greater range
for flechette performance.
This invention may be better understood from the following detailed
description taken in conjunction with the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a longitudinal sectional view of the choked flechette
weapon system.
FIG. 2 is a sectional view taken along line 2--2 of FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Reference numeral 10 identifies a flechette weapon system which
includes a missile 12 having a launch tube 14 and an ogive tip 16.
An explosive mixture 18 is located in the tube at an end opposite
the ogive tip for creating a propelling pressure in the launch
tube. A wadding 20 is positioned next to the mixture for absorbing
shock and acting as an ejecting piston. Flechettes or rod
penetrators 22 are stacked in a plastic container 24 which directly
abuts piston 20. Flechettes are supported by some substance such as
small styrofoam balls 25 to maintain alignment. A section 26 of
launch tube 14 located near the ogive tip is formed with the tube
wall thicker than the remainder of the tube. This thickened section
reduces the internal diameter of the tube and provides a choked
section. Container 24 is provided with a plurality of slots 28
around its periphery and inner center post to allow inner
compression of the container as it passes through the choked
section 26. The ogive tip is provided with an inwardly extending
flange 30 having a depending collar 32 for mating with the choked
section 26.
In operation the explosive mixture 18 is set off by a fuse or squib
and causes a pressure in the launch tube 12 behind the wadding 20.
The wadding material acts as a piston to move the plastic container
24 and flechettes 22 with it rapidly toward the ogive end of the
warhead or missile. Since the section 26 is of smaller diameter
than the launch tube 12 a compression of the container takes place,
due to slots 28, at it passes through this section. The container
pushes off the ogive tip by a compressive air force created as the
container and flechettes move forward in response to the explosion
of mixture 18 and the engagement of collar 32 by the upper edge of
container 24. The ogive tip becomes aerodynamically unstable and
then separates due to air drag and tumbles out of the way as the
plastic container with the flechettes leave the tube. The container
falls away due to air drag leaving the undistorted flechettes
traveling at the same increased velocity in a uniform pattern
toward their target.
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