WO2015075411A1 - A countermeasure payload container - Google Patents
A countermeasure payload container Download PDFInfo
- Publication number
- WO2015075411A1 WO2015075411A1 PCT/GB2013/053090 GB2013053090W WO2015075411A1 WO 2015075411 A1 WO2015075411 A1 WO 2015075411A1 GB 2013053090 W GB2013053090 W GB 2013053090W WO 2015075411 A1 WO2015075411 A1 WO 2015075411A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- countermeasure
- container
- cartridge
- payload
- payioad
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 53
- 238000007789 sealing Methods 0.000 claims description 16
- 239000004411 aluminium Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229920002449 FKM Polymers 0.000 claims description 2
- 239000008188 pellet Substances 0.000 description 31
- 230000006835 compression Effects 0.000 description 16
- 238000007906 compression Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000011800 void material Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- UGTZHPSKYRIGRJ-YUMQZZPRSA-N Lys-Glu Chemical compound NCCCC[C@H](N)C(=O)N[C@H](C(O)=O)CCC(O)=O UGTZHPSKYRIGRJ-YUMQZZPRSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 108010009298 lysylglutamic acid Proteins 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
- F42B5/02—Cartridges, i.e. cases with charge and missile
- F42B5/145—Cartridges, i.e. cases with charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/02—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges
- F42B33/025—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges by compacting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
- F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
- F42B12/70—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies for dispensing radar chaff or infrared material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/001—Devices or processes for assembling ammunition, cartridges or cartridge elements from parts
Definitions
- the invention relates to air countermeasure cartridges and in particular to an intertable countermeasure payload container.
- a known countermeasure cartridge comprises a countermeasure payload material, which Is pressed into a pellet prior to being located within an aluminium payload container. Or alternatively the pressed countermeasure payload material is wrapped in a protective aluminium foil
- Another known countermeasure cartridge comprises a countermeasure payload material which is subsequently compressed into a plastic container.
- the disadvantage of the known countermeasure cartridge is that the inner surface of the plastic container is smooth, which is required for its subsequent release in the moulding process and therefore does not provide an adequate surface for the compressed payload pellet to attach itself to the container. This problem is known to occur when the payload container comprising the compressed countermeasure pellet is exposed to an increased thermal environment, which causes the payload container to expand and the retained compressed countermeasure pellet to detach itself from the payload container.
- the invention provides a countermeasure payload container comprising a metallic body, which in use, is insertable into a countermeasure cartridge,- wherein said body is of a tubular shape which is dosed at a first end and opens at second end.
- This configuration provides an improved payload container, which allows a compressive ram device (also known as a drift) to be inserted into the open end of the tubular container, to facilitate in the simple and efficient compression of a countermeasure material against the closed end of the payload container.
- the metallic body augments the payload container body so that it can also function as a mould tool for supporting the contained countermeasure material, and therefore able to withstand the large compressive forces applied to a contained countermeasure payload material during the compression cycle, without deforming the configuration of the payload container itself. Therefore, preventing the deformation of the payload container is critical, because the loaded payload container will be assembled into a void within countermeasure cartridge case, which conforms to high tolerances and precise dimensions.
- a further advantage of this configuration is that the support provided to the powdered countermeasure material, from the metallic body enables the manufacturing of longer countermeasure payioads pellet Therefore, the whole countermeasure payload within the payload container is formed from one increment (e.g. one compression cycle), without comprising the configuration of the payload container, or providing loose payload pellets which result from an inadequate compression of the powdered payload material.
- said body is of a circular tubular shape.
- the advantage of this configuration is that it enables the countermeasure container to be inserted within a circular counter measure cartridge.
- said body is formed from aluminium based material.
- the advantage of this configuration is that it provides a container that is both durable, light weight and therefore does not compromise the deployment and flight characteristics of the countermeasure payload.
- the countermeasure payload consumes the aluminium payload during its burn cycle, whereby the burning aluminium contributes to the infra-red output of the activated countermeasure payload.
- a countermeasure payload container further comprises a counter measure payload.
- This configuration provides a countermeasure payload, which can be easily and quickly inserted In to a countermeasure cartridge.
- said countermeasure payload is formed from a compressible material, This configuration provides a countermeasu e payload which can be easily and efficiently formed within a countermeasure payload container.
- said compressible material is a powder. This configuration enables a compressible countermeasure payload material to be poured into the payioad container, which is then subsequently compressed to form a solid payload.
- said compressible material further comprising a magnesium material, teflon material and viton materials.
- This configuration provides a countermeasure payload that burns in excess of 1000 degrees Celsius, and therefore provides the heat source for the counter measure payioad
- Figure 1 shows a cross-sectional view of a loaded countermeasure payload container
- Figure 2 shows a cross-sectional view of an assembled countermeasure cartridge, which comprises a loaded countermeasure payload container.
- Figure 1 shows a cross-sectional view of a loaded countermeasure payload container generally indicated by 1, which incorporates a countermeasure payload material 2.
- the payload container 1 further Incorporates a closed end 3 and an open end 4, which incorporates a void 5 between the open end 4 of the container 1 and the countermeasure payload material 2.
- the countermeasure payload material 2 is initially in a powder form, prior to being poured into the container 1.
- the payload material 2 is then subsequently compressed by a compression ram means or drift (not shown) which is inserted into the open end 4 of the payload container 1 and compresses the countermeasure material to form a
- the void S is formed by the compression of the countermeasure payload material, which is caused by the subsequent reduction of the volume of the payload material powder when compressed in to a solid pellet form.
- the payload container is configured into a cylindrical can type configuration, which is formed from an aluminium alloy.
- the container comprises a 24millime ⁇ re (mm) outside diameter, a wall comprising a 0.6mm and the length of the container is 70mm, These dimensions are nominal dimensions and it is intended that the invention Is not limited to these dimensions only.
- the countermeasure payload container is initially filled with the powder countermeasure material until the powder is either flush or sub flush with the open end of the
- FIG. 2 shows a cross-sectional view of an assembled countermeasure cartridge generally indicated by 10.
- the cartridge 10 has an aluminium outer case 1 and an aluminium countermeasure payload container 1, also known as a pellet tube.
- the outer case 11 is of a substantially circular configuration which is closed at one end 12,
- An end cap element 13 is located within the open end 14 of the outer case 11 and is typically retained by the means of a friction fit
- the outer elongated side surface of the payioad container 1 abuts the inner elongated side surface of the outer case 1 1, thereby preventing any axial movement of the counter measure payioad container 1 relative to the outer case 11 of the cartridge 10,
- the dosed end 12 of the outer case 1 1 comprises a centrally located squib activation device 15 which extends from the outer surface of the bottom portion 12, to an inner payioad chamber of the outer case 11.
- a bottom ⁇ 1 ring sealing element 6 is located between the open end of the payioad container 1 and the closed end 12 of the outer case 1 1.
- the bottom ⁇ '-ring sealing element 16 is located about the squib activation device 15.
- a second top 'G'-ring sealing element 17 is located between the closed end 3 of the payioad container 1 and the end cap 13 of the cartridge 10, Both top and bottom 'O'-ring sealing elements 16 and 17 are formed from a deformable material, which is compressible to enable each of them to provide a good seal.
- the open end 4 of the payioad container 1 incorporates a void 18 which is located between the activation squib device 15 and the countermeasure payioad material 2 contained within the payioad container 1.
- This void comprises a ragged surface, which provides an increased surface area for catching the initiating flame from the activated squib device 15.
- the aluminium payioad container is filled with a powdered countermeasure material, which is then subsequently compressed by a single compression ram (or drift member) that is subsequently inserted into the open end of the payioad container and compresses the powdered payioad material into a solid pellet
- a burnable material i.e. a pyrotechnic composition (or the like)
- the payioad material is typically a powdered compound that comprises Magnesium, Teflon and Vilon (MTV) materials.
- the metallic payioad container provides a robust construction, which comprises an outer wall and/or outer diameter that does not deform due to the compressive forces being exerted on to the closed end of the payioad container. This is Important due to the required tolerances within the dimensions of the paybad container and the outer case of the cartridge, which enables the payioad container to be inserted into the cartridge, whereby no voids exists between the payioad container and outer case of the cartridge. This prevents any axial movement of the payioad container, relative to the outer case of the cartridge.
- the support provided to the countermeasure payioad material, by the metallic payioad container, enables lighter compression bads to be applied for forming an adequate countermeasure pellet if an inadequate compression force Is applied to the countermeasure material it would result in a loose pellet being formed and may break up upon the initial ejection from the cartridge case.
- the metallic payioad container is typically formed from a lightweight aluminium material.
- the adequate compression of the countermeasure payioad enables the countermeasure pay ad pellet to be formed from increment (e.g. one compression operation operation), this may result in the countermeasure payioad material being poorly consolidated at the bottom of the case; however this does not cause a problem with regards to the claimed invention.
- the support provided by the metal payioad container facilitates the manufacture of long countermeasure paybads, whereby each payioad comprise a length that is greater than the diameter of the payioad, without compromising the configuration of the paybad container along its length.
- the metallic payioad container provides an inner surface that is suitable for the powdered countermeasure material to key too during the compression cycle.
- the keyed surface of the paybad container prevents the compressed paybad pellet from becoming detached from the payioad container due to any subsequent expansion of the payioad container relative to the compressed payioad pellet
- a bottom portion of the outer case of the cartridge will incorporate the squib activation device, whereby the squib forms a seal when it is pressed into the bottom portion of the outer case.
- a bottom O-ring sealing element is then inserted into the bottom of the outer case of the cartridge which surrounds the squib activation device.
- the bottom ' ⁇ '- ring sealing element functions as a deformable supporting element, which fills the void between the open end of the payload container and the closed end of the outer case of the cartridge. Both top and bottom ⁇ ' -rings thereby support the countermeasure payload container when incorporated within the cartridge.
- both top and bottom ⁇ ' rings are of an identical large section configuration, which can cater for a large tolerance on the length of the pressed countermeasure pellet.
- the typical working tolerances are in the range of 2.5 to 3 millimetres on the length of the pressed countermeasure pellet. It is essential that the countermeasure payload container is adequately supported by top and bottom ⁇ ' -rings, which revents any movement of the countermeasure payload container relative to the outer case of the cartridge. Such movement may cause friction, which could generate heat and could subsequently initiate the countermeasure cartridge unintentionally.
- the compressed payload material which has been compressed into a payload countermeasure pellet will burn in a "cigarette - like" fashion, once it has been ignited by the squib activation device.
- the burning of the countermeasure payload pellet will begin with the ragged end faced that faces the squib activation device and will hum along the entire length of the squib pellet until ail the countermeasure material has been consumed and is extinguished by the closed end face of the payload container.
- the constant length and diameter of the pressed countermeasure pellet provides a
- the burning payload pellet When activated, the burning payload pellet will also consume the countermeasure payload container (starting at the burning face which is the face that faces the squib activation device), whereby the consuming of the aluminium container contributes to the infra-red output of the countermeasure payload pellet
- This provides the Increased advantage of being seen by a missile threat within the infra-red band of the heat seeker spectrum.
- the pressing directly into the aluminium pay oacf container substantially reduces the time required to manufacture the loaded payload containers when compared to more conventional construction methods.
- the use of only one compressive ram or drift provides a simple solution to this manufacturing method.
- a groove configuration may be Incorporated into the ragged exposed end face of the countermeasure payload pellet in another alternative embodiment, imc stearate material may be used to lubricate the pressing operation of the countermeasure payload material within the payload container.
- the assembly of the countermeasure cartridge will comprise of the following process steps:
- the assembly of the countermeasure payload comprises the following process steps:
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1417087.2A GB2520810B (en) | 2013-11-22 | 2013-11-22 | A countermeasure payload container |
PCT/GB2013/053090 WO2015075411A1 (en) | 2013-11-22 | 2013-11-22 | A countermeasure payload container |
EP13802701.6A EP3071926A1 (en) | 2013-11-22 | 2013-11-22 | A countermeasure payload container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/GB2013/053090 WO2015075411A1 (en) | 2013-11-22 | 2013-11-22 | A countermeasure payload container |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015075411A1 true WO2015075411A1 (en) | 2015-05-28 |
Family
ID=49753421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2013/053090 WO2015075411A1 (en) | 2013-11-22 | 2013-11-22 | A countermeasure payload container |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3071926A1 (en) |
GB (1) | GB2520810B (en) |
WO (1) | WO2015075411A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5561260A (en) * | 1991-10-01 | 1996-10-01 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Propelled pyrotechnic decoy flare |
US5585594A (en) * | 1991-10-01 | 1996-12-17 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | High intensity infra-red pyrotechnic decoy flare |
US20110132506A1 (en) * | 2008-06-25 | 2011-06-09 | Shortridge Robert G | Perchlorate-free red signal flare composition |
WO2011141724A1 (en) * | 2010-05-11 | 2011-11-17 | Wallop Defence Systems Limited | A countermeasure cartridge |
-
2013
- 2013-11-22 GB GB1417087.2A patent/GB2520810B/en not_active Expired - Fee Related
- 2013-11-22 WO PCT/GB2013/053090 patent/WO2015075411A1/en active Application Filing
- 2013-11-22 EP EP13802701.6A patent/EP3071926A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5561260A (en) * | 1991-10-01 | 1996-10-01 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Propelled pyrotechnic decoy flare |
US5585594A (en) * | 1991-10-01 | 1996-12-17 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | High intensity infra-red pyrotechnic decoy flare |
US20110132506A1 (en) * | 2008-06-25 | 2011-06-09 | Shortridge Robert G | Perchlorate-free red signal flare composition |
WO2011141724A1 (en) * | 2010-05-11 | 2011-11-17 | Wallop Defence Systems Limited | A countermeasure cartridge |
Also Published As
Publication number | Publication date |
---|---|
GB2520810A (en) | 2015-06-03 |
GB201417087D0 (en) | 2014-11-12 |
EP3071926A1 (en) | 2016-09-28 |
GB2520810B (en) | 2016-04-20 |
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