AMMUNITION ARRANGEMENT
An ammunition device having two or more projectiles (2) arranged one after the other. Each projectile has allocated to it a propellant charge (5) substantially surrounding the projectile arranged for individual activation with an ignition ring and an ignition system (12, 13). The projectiles and their propellant charges are arranged one after the other in an enclosing unit (1), and the projectiles are so arranged as to leave the enclosing unit one at a time in its longitudinal direction at the time of the individual activations of the propellant charges (5). Shorter ammunition devices and opportunities for rapid firing sequences of the projectiles are achieved with the invention.
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The present invention relates to an ammunition device having two or more projectiles and individual propellant charges associated therewith, for example charges of gunpowder, the respective projectile having allocated to it a propellant charge substantially surrounding the projectile provided with means for individual initiation, the projectiles and their surrounding propellant charges being arranged one after the other in an enclosing unit, and the projectiles at the time of the individual initiations of the propellant charges being so arranged as to exit from the enclosing unit in its longitudinal direction.
Presentation of the Problem and Previously Disclosed MethodThe invention is intended to be used with firearms (e.g. canons) equipped with a firing tube, grenade shell launchers and other arrangements of weapons where rapid firing must be capable of being provided.
Generally previously disclosed is the arrangement, for example, of canons for rapid firing. Projectiles in the form of shells, bombs, grape-shot and other types of shot are normally arranged with their associated propellant charges or propellant loads to the rear, and the firearms and the firings are arranged in this case by means of discharging of the projectiles in a serial sequence, where the respective weapon mechanism is actuated and closed for firing a first projectile and is then activated and closed again for firing the subsequent projectile, and so on. The introduction of the respective projectile into the firing tube bore and firing of the various projectiles with interjacent actuations of the weapon mechanism require the expenditure of a certain time and restrict the rate of firing. The need exists to be able to speed up the firing, and the object of the present invention is, among other things, to propose a solution to this problem.
In conjunction with the storage and handling of ammunition in firearms of the aforementioned kind, there is a desire to be able to keep down the combined lengths of the respective projectiles and the associated propellant charge/propellant load. The arrangement must also be such that ammunition for supersonic velocities (e.g. mach 3-5) must be capable of being available. Conventional magazines and magazine constructions must also be capable of being eliminated by the ability of the ammunition unit itself to operate with a magazine function, for example a magazine function for one-off use. The ammunition device must in addition be readily capable of being incorporated with an existing firing tube and of being embodied to permit one-off use of the parts that must be separated in conjunction with the respective discharge. The invention also solves this problem.
The times between the firings of the projectiles in firing tube weapons must be capable of being reduced to very short times, for example to times of ca. 0.02 second. Ammunition calibres of 9-60 mm, and preferably 20, 30, 40 mm grenade shells, must be capable of being utilized in the arrangement. These new trains of thought must also be capable of being integrated into metal storm technologies, where the ammunition device together with other ammunition technologies is arranged in arrays for multiple projectiles according to the invention and with high firing rates involving the firing of, for example, 45,000 rounds/minute from the respective firing tube or firearm. The new ammunition unit must also be capable of being used in conjunction with grenade shell launchers that are easy to transport to and to deploy at the point of firing. Terrain analysis and target acquisition arrangements of a previously disclosed kind must be capable of selecting suitable firing tubes, both with regard to the number of firing tubes fired and the type of ammunition contained in the respective firing tube to achieve the maximum effect of the coverage and sequences in conjunction with firings of multiple projectiles. 9 mm ammunition can be used, for example, in the case of firing of this kind. The present invention also offers a solution to this problem. From an overall point of view, the present inventions also endeavour to make available a financially advantageous handling and firing system where the parts involved can be embodied for one-off use, in spite of the aforementioned increased firing rates.
Purpose of the Invention and Distinctive FeaturesThe essential characteristic of an ammunition device according to the invention is that the enclosing unit comprises a plurality of longitudinal parts so arranged as to be capable of assembly one with the other to produce a longer weapon.
According to further characteristics of an ammunition device according to the invention, it is required:
that the enclosing unit is so arranged as to be applicable to an existing weapon firing tube;
that the enclosing unit together with other enclosing units is so arranged as to be included in a weapon comprising a multi-firing tube arrangement;
that the respective projectile in its position in the enclosing unit has a bottom part on the rear part of the projectile facing towards a first space, preferably executed as a gap, between the bottom part and a front surface belonging to or allocated to either the subsequent projectile or the enclosing unit, where the latter case applies to the rearmost projectile;
that the first space includes means, on initiating the propellant charge of the projectile, for giving the generated propellant gases access to the first space and thereby causing the projectile to be driven from the enclosing unit;
that access to the first space by the generated gases is so arranged as to take place via casing openings covered by one or more bursting discs so arranged as to give way at a predetermined gas pressure value;
that the ignition zone of the propellant charge is arranged in a second space/casing space radially outside the first space;
that the respective propellant charge is arranged in a casing, which casing is ring-shaped in its cross section and is preferably fluted on parts of its inner surface, which casing is situated outside the projectile and is open rearwards towards the first space;
that the casing is executed as an inner tube in relation to the enclosing unit, i.e. comprising a second space/casing space, and that a third, smaller space or recess which exhibits inward-facing casing openings for the gases generated by the propellant charges is arranged next to the first space;
that the second space/casing space is divided in its longitudinal extent into casing sections each comprising a casing space for its own propellant charge and means for the individual initiation of these propellant charges;
that that the casing provides a guide for the projectile as it is propelled from the enclosing unit;
that the front space belonging to the subsequent projectile constitutes the front surface of a propellant reflector part that is provided with sealing means against an inner surface inside the enclosing unit ;
that the respective projectile is so arranged as to leave the enclosing unit before firing of the subsequent projectile takes place;
that the subsequent projectile is so arranged as to be capable of being actuated for its propulsion from the enclosing unit before the preceding projectile has left the aforementioned enclosing unit;
that it is so arranged as to be capable of being fired by means of a large-bore firearm, for example a firing tube weapon with a bore of 20-40;
that the projectiles and the propellant charges are arranged for use in a firing tube weapon without a magazine;
that the projectiles are held loosely together in the enclosing unit with holding means which preferably comprise a bayonet mounting or a screw-in mounting;
that each of the casings enclosing the projectiles comprises casing sections mutually aligned parallel one with the other that are so arranged as to be capable of individual activation;
that the unit enclosing the projectiles and the propellant charges is arranged together with a plurality of further enclosing units arranged one alongside the other;
that the enclosing unit is so arranged as to be capable of alignment with the firing tube of a firing tube weapon;
that the enclosing unit is arranged in a carrier that is transported or advanced in relation to the intended target;
that each longitudinal part comprises a mechanical attachment means, preferably a bayonet mounting or a screw-in mounting, in order to assure the aforementioned mountability.
The enclosing unit can be arranged on a weapon firing tube in a weapon, for example a canon. The enclosing unit can be included together with other enclosing units in a weapon magazine, in which the enclosing unit alone or together with one or a plurality of further enclosing units is or are so arranged as to be capable of introduction into the firing tube of the weapon. Each projectile in its position in the enclosing unit has its rear end facing towards a first space between the rear end and a front part of the subsequent projectile or the rear part of the enclosing unit. The enclosing unit is arranged with a specific spatial arrangement. The propellant charge is preferably applied in a casing arranged between the outer surfaces of the projectiles and the internal surface of the enclosing unit. The casing is provided with recesses to permit the passage of the expansion gases that are generated by the respective initiations of the propellant charges. The aforementioned casing comprises a second space, also referred to below as the casing space between inner and outer parts of the wall, which extends in the longitudinal direction of the casing. Electronic ignition devices are arranged on the aforementioned two spaces for the aforementioned expanded propellant gases and are capable of activation in series, which can take place in a previously disclosed manner. The different projectiles in one embodiment can be mechanically attached one to the other in an initial position, in which case steps are taken to ensure that the necessary acceleration section is available at the front in the enclosing unit. The respective mechanical connections between the mutually arranged projectile parts are detachable in conjunction with the separation of the respective projectile from the remaining parts which form the unit enclosing the projectile parts. The projectiles can be arranged with separating propellant reflector parts or dividing parts between the different projectiles. The aforementioned casing and/or the enclosing unit can comprise longitudinal sections which are separated or prepared for separation at the time of exiting from the firearm. Further embodiments of the idea of invention can be appreciated from the following dependent claims.
On the basis of what is proposed above, a new firearm arrangement can be provided for attacking different types of combat targets. Each paired combination of a projectile and a propellant charge/propellant load can be connected to the following paired combination of a projectile and a propellant charge/propellant load with the aforementioned mechanical attachment arrangement, which in this case can consist of a bayonet and/or screw-in arrangement. The invention thus involves the assembly of a number of separate modules comprising a projectile and a propellant charge/propellant load, without the need for an external, separate firing tube, where the propellant charges are preferably arranged only externally and enclosing, that is to say not arranged between, the projectiles. The advantage gained by this means is that a shorter weapon is obtained in relative terms, because the included propellant charges do not increase the length of the weapon, which is the case when the propellant charges are arranged between the respective projectiles. The diameter of the weapon is instead increased slightly compared with corresponding firing tube weapons with intermediate loading. In another embodiment, an ammunition device can comprise one of a number of subsidiary lengths comprising a plurality of enclosing units containing the aforementioned plurality of paired combinations of a projectile and a propellant charge/propellant load assembled into a longer firing tube weapon, the length of which is determined by the number of subsidiary lengths of enclosing units. In conjunction with the firing of a leading projectile, this can initiate the advance of the subsequent projectile and the associated propellant charge in conjunction with discharge and can prepare the first space behind the subsequent projectile so that its propellant charge can be initiated for the effective actuation of the forthcoming propulsion of the subsequent projectile, and so on. The first projectile can leave the firing tube before activation of the subsequent projectile is initiated. Alternatively, the subsequent projectile can begin to be activated before the preceding projectile has left the firing tube. The result is that, for each projectile that is fired, its tube part, that is to say its empty enclosing unit after firing, remains present and is added to a first, foremost empty firing tube part intended to provide a first acceleration section for the first projectile. The growing acceleration section can be compensated for appropriately via custom-made charges which make up for the increasing section length. The firing tube can be either smooth-bored or rifled. The casing for the enclosure of the respective propellant charge preferably exhibits a dual function in that, on the one hand, it provides guidance for the projectile in the enclosing unit and, on the other hand, it contains the propellant charge (gunpowder) for the propulsion of the projectile. The casing can easily be arranged in conjunction with an electronic initiation arrangement, by means of which the serial initiation of the propellant charges in the enclosing unit is effected. The casing can be divided up into serial and/or parallel longitudinal sections. The enclosing unit can also be sectioned or can be provided with sections of such a kind. Preferably more than two projectiles are arranged with associated propellant charges one after the other in the enclosing unit (the firing tube), for example 4-6 projectiles are applied one after the other in the enclosing unit. Ammunition units constructed as mines can also be used.
A proposed embodiment of an ammunition device which exhibits the significant characterizing features of the invention is described below at the same time with reference to the accompanying drawings, in which:
The enclosing unit is designated in
The embodiment of an ammunition arrangement according to the invention described above is not restricted to the embodiments illustrated above by way of example, but can be subjected to modifications within the scope of the following patent claims and the idea of invention. For example, the one or more enclosing units can be arranged in a carrier that is transported or propelled in relation to the intended target, for example an unmanned aircraft, a UAV (Unmanned Aerial Vehicle), a missile, an aircraft, a carried or released weapons capsule (pod) containing one or more weapons, etc.
Claims
1. Ammunition device having two or more projectiles (2) and individual propellant charges (5) associated therewith, for example charges of gunpowder, the respective projectile (2) having allocated to it a propellant charge (5) substantially surrounding the projectile (2) arranged with means (12, 13) for individual initiation, the projectiles (2) and their surrounding propellant charges (5) being arranged on after the other in an enclosing unit (1), and the projectiles (2) at the time of the individual initiations of the propellant charges (5) being so arranged as to leave the enclosing unit (1) in its longitudinal direction, characterized in that the enclosing unit (1) comprises a plurality of longitudinal parts (1A, 1B, etc.) that are so arranged as to be capable of assembly one to the other to produce a longer weapon.
2. Ammunition device according to claim 1, characterized in that the enclosing unit (1) is so arranged as to be applicable to an existing weapon firing tube (18).
3. Ammunition device according to claim 1, characterized in that the enclosing unit (1) together with other enclosing units (16) is so arranged as to be included in a weapon (17) comprising a multi-firing tube arrangement.
4. Ammunition device according to claim 1, characterized in that the respective projectile (2) in its position in the enclosing unit (1) has a bottom part (2d) on the rear part. (2b) of the projectile (2) facing towards a first space (8), preferably executed as a gap, between the bottom part (2d) and a front surface (9a) belonging to or allocated to either the subsequent projectile (2), or the enclosing unit (1), where the latter case applies to the rearmost projectile (2′).
5. Ammunition device according to claim 4, characterized in that the first space (8) includes means (4h, 11), on initiating the propellant charge (5) of the projectile (2), for giving the generated propellant gases access to the first space (8) and thereby causing the projectile (2) to be driven from the enclosing unit (1).
6. Ammunition device according to claim 4, characterized in that access to the first space (8) by the generated gases is so arranged as to take place via casing openings (4h) covered by one or more bursting discs (11) so arranged as to give way at a predetermined gas pressure value.
7. Ammunition device according to claim 4, characterized in that the ignition zone (12) of the propellant charge (5) is arranged in a second space/casing space (4c) radially outside the first space (8).
8. Ammunition device according to claim 4, characterized in that the respective propellant charge (5) is arranged in a casing (4), which casing (4) is ring-shaped in its cross section and is preferably fluted (4e) on parts (4d) of its inner surface, which casing (4) is situated outside the projectile (2) and is open rearwards towards the first space (8).
9. Ammunition device according to claim 8, characterized in that the casing (4) is executed as an inner tube in relation to the enclosing unit (1), i.e. comprising a second space/casing space (4c), and that a third, smaller space or recess (6) which exhibits inward-facing casing openings (4h) for the gases generated by the propellant charges (5) is arranged next to the first space (8).
10. Ammunition device according to claim 9, characterized in that the second space/casing space (4c) is divided in its longitudinal extent into casing sections (A, B, C) each comprising a casing space (4c) for its own propellant charge (5) and means (12, 13) for the individual initiation of these propellant charges (5).
11. Ammunition device according to claim 8, characterized in that the casing (4) provides a guide for the projectile (2) as it is propelled from the enclosing unit (1).
12. Ammunition device according to claim 4, characterized in that the front space (9a) belonging to the subseguent projectile (2′) constitutes the front surface (9a) of a propellant reflector part (9) that is provided with sealing means (14) against an inner surface (4f) inside the enclosing unit (1).
13. Ammunition device according to claim 1, characterized in that the respective projectile (2) is so arranged as to leave the enclosing unit (1) before firing of the subsequent projectile (2) takes place.
14. Ammunition device according to claim 1, characterized in that the subsequent projectile (2) is so arranged as to be capable of being actuated for its propulsion from the enclosing unit (1) before the preceding projectile (2) has left the aforementioned enclosing unit (1).
15. Ammunition device according to claim 2, characterized in that it is so arranged as to be capable of being fired by means of a large-bore firing tube weapon (17), for example a firing tube weapon with a bore of 20-40.
16. Ammunition device according to Claim 2, characterized in that the projectiles (2) and the propellant charges (5) are arranged for use in a firing tube weapon (17) without a magazine.
17. Ammunition device according to claim 1, characterized in that the projectiles (2) are held loosely together in the enclosing unit (1) with holding means which preferably comprise a bayonet mounting or a screw-in mounting.
18. Ammunition device according to claim 1, characterized in that each of the casings (4) enclosing the projectiles (2) comprises casing sections (A, B, C) mutually aligned parallel one with the other that are so arranged as to be capable of individual activation.
19. Ammunition device according to claim 1, characterized in that the unit (1) enclosing the projectiles (2) and the propellant charges (5) is arranged together with a plurality of further enclosing units (16) arranged one alongside the other.
20. Ammunition device according to claim 1, characterized in that the enclosing unit (1) is so arranged as to be capable of alignment with the firing tube (18) of a firing tube weapon (17).
21. Ammunition device according to claim 1, characterized in that the enclosing unit (1) is arranged in a carrier that is transported or advanced in relation to the intended target.
22. Ammunition device according to claim 1, characterized in that each longitudinal part (IA, IB, etc.) comprises a mechanical attachment means (15), preferably a bayonet mounting or a screw-in mounting in order to assure the aforementioned mountability.
Type: Application
Filed: Jul 4, 2006
Publication Date: May 21, 2009
Applicant: BAE Systems Bofors AB (Karlskoga)
Inventors: Ola Stark (Karlskoga), Lars-Peter Svanberg (Karlskoga)
Application Number: 11/994,800
International Classification: F42B 5/03 (20060101);