U.S. patent application number 11/784665 was filed with the patent office on 2010-08-26 for projectile with a flared tailpiece.
Invention is credited to Dirk Brachmann, Stefan Thiesen.
Application Number | 20100212534 11/784665 |
Document ID | / |
Family ID | 42629788 |
Filed Date | 2010-08-26 |
United States Patent
Application |
20100212534 |
Kind Code |
A1 |
Thiesen; Stefan ; et
al. |
August 26, 2010 |
Projectile with a flared tailpiece
Abstract
An existing projectile is adapted to a fire control computer
instead of adapting the fire control computer to the ammunition, as
has been the customary approach. The adaptation is carried out by
providing the projectile with a different propellant charge powder
but at least increasing the diameter of the flare while the length
of the tail piece is kept constant.
Inventors: |
Thiesen; Stefan; (Willich,
DE) ; Brachmann; Dirk; (Celle, DE) |
Correspondence
Address: |
LUCAS & MERCANTI, LLP
475 PARK AVENUE SOUTH, 15TH FLOOR
NEW YORK
NY
10016
US
|
Family ID: |
42629788 |
Appl. No.: |
11/784665 |
Filed: |
April 9, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60790712 |
Apr 10, 2006 |
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Current U.S.
Class: |
102/517 |
Current CPC
Class: |
F42B 8/20 20130101; F42B
10/32 20130101; F42B 30/08 20130101 |
Class at
Publication: |
102/517 |
International
Class: |
F42B 8/12 20060101
F42B008/12; F42B 30/08 20060101 F42B030/08 |
Claims
1. A projectile which can be fired by a weapon system with a fire
control computer, the projectile comprising an interchangeable
flared tail piece and propellant charge powder whereby, instead of
adapting the fire control computer to a new type of ammunition, the
existing projectile is changeable by placing a new second flared
tail piece with a different radius but the same length as a first
flared tail piece on the projectile and changing a first propellant
charge powder to a second propellant charge powder.
2. The projectile according to claim 1, wherein the projective is a
training projectile.
3. The projectile according to claim 1 wherein the radius of the
second flared tail piece is greater than the radius of the first
tail piece.
4. The projectile according to claim 1, including ammunition
containing an I propellant charge powder.
5. A projectile system comprising: a projectile body; propellant
charge powder; at least two different flared tail pieces, the tail
pieces each having a common length but a different radius; and a
mechanism for selectively mounting one of the tail pieces to the
body and changing the propellant charge powder so that the
projectile is adapted to an existing fire control computer.
6. (canceled)
7. A method for adapting a projectile to a fire control computer,
comprising: providing at least two different flared tail pieces,
each having a common length and a different radius; providing at
least two different propellant charge powders; selecting a tail
piece and propellant charge powder suited to the fire control
computer; and mounting the selected tail piece to the
projectile.
8. (canceled)
Description
This application claims priority from Provisional Application No.
60/790,712, filed Apr. 10, 2006, the entire contents of which are
incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0001] The invention concerns a projectile, especially a training
projectile, that can be fired from a weapon system with a fire
control computer.
[0002] Training ammunition of this type is disclosed, for example,
by DE 100 14 513 A1. Training ammunition with a flared tail piece
with slots is described, for example, in U.S. Pat. No. 5,498,160.
DE 90 12 031 U1 describes a flared tail piece with holes.
[0003] As is well known, modern weapon systems have a fire control
computer, which is adapted to each type of weapon and ammunition.
Therefore, when new varieties and types of ammunition are
introduced, the fire control computer requires complicated
adaptation. In addition, one of the main considerations for
training ammunition is economy. The adaptation is usually carried
out in a permanent location, so that the fire control computers,
including vehicles or the like, must be brought to a predetermined
site and thus also become unavailable for practice purposes.
SUMMARY OF THE INVENTION
[0004] The object of the present invention is to provide the
possibility of adapting existing training ammunition with a flared
tail piece and a fire control computer that is already present but
not yet adapted to this training ammunition, and to allow this
adaptation to be made in a way that takes economy into account.
[0005] The invention is based on the basic idea of adapting the
existing training ammunition to the fire control computer instead
of changing the fire control computer, as has been the approach
until now. In this regard, it is necessary to take into
consideration the complex interaction between the temperature
behavior of the ammunition from -15.degree. C. to 35.degree. C.,
and the trajectory.
[0006] The adaptation is carried out by increasing the diameter of
the flare while the length of the tail piece is kept constant and
also possibly providing the training ammunition with a different
propellant charge powder. Amazingly, it was found in practice that
a complex adaptation to the temperature and trajectory behavior is
achieved in this way, and only a trajectory error (at -15.degree.
C. to 35.degree. C.) of less than 0.1 is possible. An "I"
propellant charge powder is used as the new propellant charge
powder instead of a simple propellant charge powder.
[0007] The invention is explained in greater detail below with
reference to the specific embodiment illustrated in the
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 shows a prior-art projectile.
[0009] FIG. 1a shows a tail piece.
DETAILED DESCRIPTION OF THE INVENTION
[0010] FIG. 1 shows a projectile, in this case a training round,
according to the prior art, which consists of a flared tail piece 2
with slots 3 and other details that need not be considered in
detail for the purposes of this explanation.
[0011] The tail piece 2 illustrated here, which has a flare of, for
example, 78 mm, is replaced by a tail piece 2.1 (FIG. 1a) with a
larger flare of, for example, 88-94 mm. This is accomplished by
screwing the tail piece 2.1 onto the cylindrical section 4 of the
ammunition.
[0012] Although the present invention has been described in
relation to particular embodiments thereof, many other variations
and modifications and other uses will become apparent to those
skilled in the art. It is preferred, therefore, that the present
invention be limited but by the specific disclosure herein, but
only by the appended claims
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