WO2011141724A1 - Cartouche de contre-mesure - Google Patents

Cartouche de contre-mesure Download PDF

Info

Publication number
WO2011141724A1
WO2011141724A1 PCT/GB2011/050622 GB2011050622W WO2011141724A1 WO 2011141724 A1 WO2011141724 A1 WO 2011141724A1 GB 2011050622 W GB2011050622 W GB 2011050622W WO 2011141724 A1 WO2011141724 A1 WO 2011141724A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
seal plate
accordance
cartridge
plate assembly
Prior art date
Application number
PCT/GB2011/050622
Other languages
English (en)
Inventor
David Plewka
Gordon Flaws
Original Assignee
Wallop Defence Systems Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wallop Defence Systems Limited filed Critical Wallop Defence Systems Limited
Publication of WO2011141724A1 publication Critical patent/WO2011141724A1/fr

Links

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
    • F42B5/15—Cartridges, i.e. cases with charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
    • 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
    • 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
    • F42B5/067—Mounting or locking missiles in cartridge cases
    • F42B5/073—Mounting or locking missiles in cartridge cases using an auxiliary locking element
    • 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
    • F42B5/08—Cartridges, i.e. cases with charge and missile modified for electric ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge

Definitions

  • the invention relates to air countermeasure cartridges. Background to the Invention
  • a known air countermeasure device is a 55mm countermeasure cartridge, which is typically used by the Tornado and Typhoon countermeasure systems.
  • the countermeasure cartridge is assembled by attaching the base plate / film wire / squib housing sub-assembly onto a payload sub-assembly.
  • the payload sub-assembly is then inserted into an open end of a cartridge's outer case.
  • the outer case manufactured from a base plate, tube and O-ring, are crimped together. The strength and ductility of the tube is a critical feature in a design and requires close quality control.
  • PCB external contact printed circuit board
  • a film wire/foil originating from the contact PCB, for communicating the firing pulse to the squib housing is attached to the squib housing via two screws which have exposed threads that are peened over (an edge burred over).
  • the film wire/foil is designed to tear to allow the squib and squib housing to be ejected with the payload. This ensures that the firing circuit will have been broken when the dispenser interrogates the post-firing resistance of the cartridge.
  • the operator has to pass a cut through the film wire to create "weak" points and can lead to problems with the quality of the product.
  • the shutter mechanism for the known cartridge incorporates the following features:
  • a squib device is glued into the housing
  • a squib housing is attached to the shutter block via two screws;
  • a sprung loaded shutter-spring follower is peened (an edge burred over) into the housing
  • the aluminium payload container is designed to be produced in a "soft" condition which results in a component which is prone to damage and requires a high level of protection when being transported from the supplier.
  • the cartridge has been designed and manufactured, results in a considerable component tolerance build up before fitting the end cap, the resulting void within the cartridge is filled with a number of packing pieces.
  • the void within the cartridge is gauged, and then the appropriate packing pieces are then selected and inserted about one end of the payload to fill the void within the cartridge.
  • the completed cartridge has to be inspected by X-ray to confirm no solder inclusions or twisted film wires.
  • the invention provides a method of assembling a countermeasure cartridge comprising the steps of
  • This method provides a fast end efficient means of assembling a countermeasure cartridge from independent sub-assemblies. It allows a relatively low skilled operator to repeatedly assemble countermeasure cartridge in which the payload contacts are reliably aligned with the contacts of the outer case, with out any complicated assembly procedure, therefore ensuring that the firing signal is reliably communicated through the cartridge case to the squib device.
  • the annular bonding member ensures that both the outer case of the cartridge and the payload container are maintained at the same potential difference, therefore preventing any potential difference between the sub-assemblies, which may unintentionally activate the device.
  • the annular bonding member may be typically in the form of a conductive clip.
  • step of attaching an electrical conductor to a first circuit board This provides a means of electrically communicating the firing pulse signal applied to the cartridge to the contact PCB.
  • a first annular sealing member within an outer channel of said seal plate sub-assembly, whereby, in use, said first annular sealing member abuts both the outer edge of said seal plate and the inner surface of said outer case. This provides a seal which prevents the movement of hot gases passing around the seal plate sub-assembly and potential damaging the interface PCB, which interfaces the cartridge with the countermeasure dispenser.
  • the step of attaching said seal plate sub-assembly to said outer case of said cartridge via a snap-fitting means.
  • This configuration provides a means of attaching the seal plate assembly to the outer case of the cartridge, therefore providing a method of assembly which is quick, clean and without the use potting compounds, adhesives pins or screws.
  • the assembly can also be carried out by a relatively low skilled operator.
  • the snap-fitting means provides a cost effective method of attaching the seal plate assembly to the case of the cartridge .
  • step of attaching said electrical conductor to a second circuit board This provides a means of communicating the firing signal from the external interface PCB, which engages the countermeasure dispenser, to the contact PCB.
  • This provides a means of routing the electrical conductor between the contact PCB and the external interface PCB without compromising the integrity of the seal.
  • the conductor is routed through the snap fit mounting hole which eliminates the requirement for a separate hole within the seal plate assembly.
  • said method comprises the step of locating a first annular sealing member between said first circuit board and said one end of said outer case, whereby said first circuit board is crimped onto one end of said outer case.
  • This provides a means of permanently attaching and sealing the external contact PCB to the outer case, therefore providing an environmental seal which prevents any moisture from getting into the void which is located beneath the external interface PCB.
  • the seal also eliminates the requirement for potting the interface PCB to prevent the ingression of moisture.
  • a pad which includes first and second adhesive surfaces; whereby said first surface attaches said pad to said seal plate assembly and said second surface attaches said first circuit board to said pad.
  • This provides the means of attaching the contact PCB to the seal plate assembly during assembly process. Therefore, allowing the routing of the electrical conductors whilst assembling and attaching the seal plate assembly to the outer case of the cartridge.
  • a method of assembling a countermeasure cartridge substantially as described herein.
  • the invention provides a shutter plate assembly adapted, in use, to initiate a countermeasure cartridge, the assembly comprising a body portion incorporating an orifice and a leaf member; wherein said leaf member is slidably attached to said body portion by a first snap-fitting means which, in use, is movable from a first position that prevents the communication of hot gases through said orifice, to a second position that allows the communication of hot gases through said orifice.
  • the assembly can be carried out by a relatively low skilled operator.
  • the assembly provides a quick, easy and cost effective method of assembling shutter plate.
  • said first snap-fitting means further comprises a cavity within said body portion which incorporates a slot that cooperates with a snap-fitting protrusion on said leaf member.
  • This provides a means of attaching the leaf member to the body portion by the operator inserting the leaf into the cavity.
  • the protrusion locates within a slot within the cavity, which allows the leaf to be slidably attached to the body portion. Therefore, reducing the required level of skill required to assemble the shutter assembly, which requires no screws pins.
  • said leaf member further comprises a cavity for holding a resilient spring member. This provides the means of biasing the leaf member in predetermined position.
  • a squib sub-assembly wherein said squib sub-assembly is attachable to said body by a second snap-fitting means.
  • This provides a means of attaching the squib sub-assembly to the body portion without the use of glues, potting or pinning. Therefore, reducing the assembly time and operator skill required for assembling the shutter plate assembly whilst improving efficiency.
  • said squib sub-assembly further comprises an electrical contact means for communicating a firing signal to a squib device.
  • This may be typically in the form of sprung loaded electrical contact pin.
  • a high friction insert which cooperates with said squib device.
  • This provides a means of attaching the squib device to the shutter plate assembly, while also maintaining a seal which contains the hot gases from the squib device. The hot gases are generated when the squib device is initiated.
  • said body portion further comprise a retaining means for retaining said squib device within said high friction insert.
  • a retaining means for retaining said squib device within said high friction insert.
  • the retaining means may be in the form of a retaining clip.
  • said retaining means is a clip which is attachable to said body portion by a third snap-fitting means.
  • a third snap-fitting means provides a means of attaching the retaining means to the body portion without the use of potting, adhesives, pins or screws. Therefore, reducing the assembly time and operator skill required for assembling the shutter plate assembly whilst improving efficiency.
  • said retaining means is polarised to facilitate the engagement of said third snap-fitting means. This provides the means of ensuring that the retaining means can only be fitted to the body portion of the shutter assembly in one position. Therefore, when the clip is located it is in the correct position which locks the squib device in to position.
  • said body portion further comprises a second cavity incorporating a plurality of sides which in use, retains a pyrotechnic device.
  • This provides the means of attaching a pyrotechnic device which is pressed into the body portion of the shutter assembly. Therefore, material from the body portion is deformed and is displaced in the corner regions of the cavity, which prevents shards or burrs from forming. The resulting friction may cause a safety hazard if the shards or burrs are allowed to rub against the pyrotechnic device.
  • said body further comprises a third cavity which, in use, holds a gunpowder charge, whereby said gunpowder charge is retained by a closing member.
  • a closing member may be in the form of a friction fitting bung.
  • a countermeasure cartridge comprising a shutter plate assembly.
  • a countermeasure payload assembly comprising a shutter plate assembly
  • shutter plate operated system Preferably, shutter plate operated system.
  • the invention provides a seal plate assembly adapted, in use, to initiate a countermeasure cartridge, the device comprising a body portion incorporating a snap-fitting means; wherein said seal plate assembly is fitted to an outer case via said snap-fitting means.
  • This configuration provides a means of assembling a seal plate mechanism for a countermeasure cartridge without the use of potting compounds, adhesives, pins or screws.
  • the assembly can be carried out by a relatively low skilled operator.
  • the assembly provides a quick, easy and cost effective method of assembling shutter plate.
  • the seal plate assembly can be assembled away from the manufacturing environment.
  • a circuit board incorporating an electrical contact which in use, communicates an initialising pulse to a shutter plate assembly.
  • This provides a means of communicating an external firing pulse to the squib device residing within the adjacent shutter plate assembly.
  • annular sealing member disposed within an outer recess, wherein said annular member abuts the outer surface of said seal plate and inner surface of said outer case.
  • circuit board Preferably, further comprising a key portion which cooperates with a keyway incorporated within said circuit board. This provides the means of correctly positioning the circuit board onto the seal plate assembly, so the circuit board is aligned with the contacts of the shutter plate assembly.
  • a recess which cooperates with a locating supporting member from a shutter plate assembly. This provides the means of aligning the shutter plate assembly on top of the seal plate assembly, so that the contacts of both assemblies are aligned with each other to facilitate the communication of the firing pulse.
  • an aperture which, in use, facilitates the routing of an electrical conductor from a circuit board to the external interface of said cartridge. This provides the means of routing the electrical conductor through a hole within the seal plate assembly without interfering with the outer seal of the seal plate assembly.
  • a protruding portion configured into a shape incorporating a plurality of sides and which, in use, co-operates with a recess within the inner surface of said cartridge.
  • Figure 2 shows a cross sectional view of the assembled countermeasure cartridge, in accordance with the preferred embodiment of the invention.
  • the circular recess 7 further incorporates an orifice 8 and a polarising key 9.
  • the orifice 8 enables one or more electrical conductors (such as electrical wires or ribbon / foil conductors to pass through the seal plate assembly 6) for the connection to an external interface printed circuit board (PCB) 10, which receives the firing pulse signal from an external countermeasure system.
  • the key 9 is a protrusion, which cooperates with a keyway 1 1 located on the outer peripheral edge of a circular contact PCB 12.
  • the circular contact PCB 12 is located and held within the circular recess 7 via pad (not shown) which has an upper self-adhesive surface and a lower self-adhesive surface.
  • the seal plate sub-assembly 6 further incorporates an annular channel 13 about its peripheral edge for locating an annular seal, such as an ⁇ ' ring (not shown).
  • An array of three recesses 14 (only two are shown) which are located within a second annular recess 15 that is adjacent to recess 7.
  • the three recesses 14 are spaced about the annular recess15 in a unique combination, which enables the fitting of the pellet container sub-assembly 3 to the seal plate sub-assembly 2 in a configuration, which aligns the electrical contacts of the squib device sub-assembly (not shown, - housed within the shutter plate assembly 16) with the electrical contacts on the contact PCB 12.
  • the interface PCB 10 is located within an annular recess 30 (see figure 2), incorporated within an end face 17 of the tubular body 4.
  • the interface PCB 10 is crimped into the annular recess 30 (see Figure 2) of end face 17, therefore permanently attaching and sealing the interface PCB 10 to the tubular body 4.
  • the cylindrical body 18 incorporates a closed portion 19, which incorporates an array of three circular recesses 20.
  • the spacing between the first and second recesses is 100 degrees
  • the spacing between the second and third recesses is 120 degrees
  • the spacing between the third and first recesses is 140.
  • the recesses locate and cooperate with three matching locating spigots (not shown) protruding from the bottom surface of a plastics end cap 21. This configuration of recesses and matching spigots ensures that the pellet container sub-assembly 3 locates within the outer case sub assembly 2, whilst aligning and maintaining electrical contact between the two subassemblies.
  • the shutter plate assembly 16 further incorporates a leaf member 22, which cooperates with a cavity 23 within the shutter plate assembly 16.
  • the leaf member 22 incorporates two cylindrical cavities 24, which houses two spring members (not shown).
  • Each cylindrical cavity 24 incorporates a snap fitting protrusion 25 on its outer surface, which cooperates with a groove within a cavity 23.
  • the snap fitting protrusion is orientated along an axis.
  • the leaf member 22 has a width to length ratio, which would cause the leaf member 22 to jam sideways if any lateral rotation is incurred during its movement between two positions within the cavity 23.
  • the leaf member 22 incorporates a rectangular key 26, which cooperates with a rectangular keyway within the cavity 23 that prevents any lateral rotation of the leaf member 22.
  • the shutter plate assembly 16 is shown to incorporate an orifice 27, which communicates the hot gases from the take-over cup 29 to the pellet payload 28, and thereby
  • FIG 2 shows the same countermeasure cartridge 1 as illustrated within Figure 1.
  • the countermeasure cartridge 1 shows the pellet container sub-assembly 3 fully assembled and inserted within the cartridge's outer case sub-assembly 2.
  • the external interface PCB 10 is shown to be crimped into one end 17 of the cartridge's outer case sub-assembly 2 and resides within a recess 30, which also accommodates an annular seal 31 , such as an "O" ring, which environmentally seals the interface PCB 10 to the outer case end 17.
  • the outer case sub-assembly 2 is shown to incorporate an internal wall 32, which incorporates a central orifice 33 that enables the seal plate sub-assembly 6 to be snap- fitted to the outer case assembly 2 via the expandable head of a snap fitting means 34.
  • the snap fitting means 34 is located upon a protrusion 35, which has a plurality of sides.
  • the seal plate sub-assembly 6 is shown to be connected within a matching recess 36 within the internal wall 32. The plurality of sides prevents the seal plate sub-assembly from rotating when exposed to vibrations.
  • the contact PCB 12 is shown to be assembled and attached to the seal plate sub-assembly 6 via a pad (pad not shown).
  • the seal plate sub-assembly 6 incorporates an outer annular seal 41 which seals the seal plate subassembly 6 to the inner surface of the cartridge's outer case sub-assembly 2.
  • the shutter plate sub-assembly 16 of the pellet container sub-assembly 3 is shown to be located on the seal plate sub-assembly 6.
  • a second pellet supporting ring [not shown], which is also typically formed from a rubber material that abuts both the flat end face of the pellet payload 28 and the face of the outer annular flange 37.
  • the pellet supporting rings prevents the pellet payload 28 from moving within the pellet container 18 and therefore making contact with the inner surface of the cylindrical container 18.
  • the pellet payload 28 will vary due to the manufacturing process and the densities of the materials used. This results in the gap between the end face of the pellet payload 28, and the face of the outer annular flange 37 to vary, therefore various thicknesses of the second supporting ring [not shown] will be required accordingly.
  • the second supporting ring [not shown] may be provided in a range of thicknesses, such as 1.5mm, 2.5mm, 3.5mm and 4.5mm, to fill the gap.
  • the shutter plate assembly 16 is aligned in position on top of the second pellet supporting ring [not shown].
  • the top surface of the second pellet supporting ring [not shown] protrudes from the open end of the pellet container when in position.
  • the protrusion is dependent upon the length of the pellet payload 28 and may range from 0.1 mm to 1.1 mm in relation from the outer edge of the pellet container 18.
  • the shutter plate assembly 16 is then pressed into the pellet container 18, which compacts the pellet payload between the two supporting rings. This prevents the movement of the pellet payload 28 within the pellet container 18.
  • the loaded pellet container is then crimped onto the shutter plate assembly's outer annular flange 37, which incorporates a reversed angle and therefore maintaining the cylindrical body 18 onto the shutter assembly 16.
  • the pellet container 18 incorporates a groove 41 in close proximity towards the closed end of the container 18. Located within the grove 41 are two adjacent seals one is a rubber environmental seal 38, the other is formed from a 0.6mm gauge wired bonding clip 39, which incorporates a plurality of sides, such as an octagon / decagon shape. The two seals are configured so that the environmental seal 38 is on the outer most edge and prevents any environmental contamination of the bonding clip 39.
  • the pellet container 18 incorporates a pellet supporting ring 40, which is typically formed from a rubber material that supports a pellet's pointed nose end whilst within the container 18.
  • the countermeasure cartridge is assembled by inserting a fully assembled pellet container sub-assembly into a fully assembled outer case sub-assembly of the cartridge.
  • the pellet container sub-assembly is then rotated in relation to the outer case subassembly, in which the locating spigots protruding from the shutter assembly locate within the dedicated recesses of the seal plate sub-assembly.
  • This configuration ensures that the sprung loaded electrical contacts of the seal plate sub assembly are aligned and in contact with the electrical contacts of the squib device sub assembly, which is incorporated within the shutter plate assembly.
  • pellet container sub-assembly Once the pellet container sub-assembly has been fully inserted into the outer case it is then crimped to the outer case by an array of metal deforming punches, which crimp the outer case to the pellet container sub-assembly via a number of dots along the same circular axis as the bonding clip.
  • An end cap is fitted to the closed end of the pellet container, via an array of three pins which cooperate with an array of 3 holes/ recesses located within the closed end of the pellet container.
  • the pins and holes interact to form a friction fitting means of retaining the cap in position without the use of packing/spacing components, which are utilised in the assembly of known countermeasure cartridges.
  • the leaf member is snap fitted to the shutter plate assembly's body via two slots, which cooperate with the protrusions from the outer edges of the leaf device, which extend in a linear direction.
  • the shutter plate assembly incorporates a squib device assembly (also known as a contact block assembly), which is snap fitted to the shutter plate assembly via a contact block that incorporates two sprung load pins.
  • the contact block is configured in a triangular shape in which the top angle incorporates a notch that polarises the contact block so that it can be fitted in one orientation only.
  • a squib device is attached to the contact pins and is then inserted into a high friction rubber insert which retains the squib within the shutter plate assembly, while also maintaining a seal that contains the hot gases from the squib device. The hot gases are generated when the squib device is initialised.
  • the squib is also mechanically retained by a polarised 'U'-shape clip which incorporates a central slot which retains the squib within the rubber insert under severe vibration.
  • the pins of the squib assembly are sprung loaded, which therefore ensure that they make a good contact with the contact portion of the seal plate assembly.
  • the shutter plate assembly also incorporates a well for housing a charge of gun powder. The gun powder is enclosed within the well via a friction fitting rubber bung.
  • the shutter plate assembly's leaf assembly when pushed in does not allow the
  • the firing pulse from the system, via the external interface PCB, is communicated through electrical conductors, which subsequently communicates the firing signal to the internal contact PCB.
  • the internal contact PCB then subsequently communicates the firing pulse to the contact pins of the shutter plate assembly.
  • the firing pulse is then subsequently communicated to the squib device incorporated within the shutter plate assembly, whereby the firing pulse activates the squib device.
  • the initiation of the squib device then burns the black powder within the black powder charge.
  • the black powder is retained within the black powder reserve via a friction fitting rubber bung.
  • the burning of the black powder charge generates a substantial amount of hot gases, which expands and jettisons the pellet container sub-assembly away from the outer case, into free space away from the platform.
  • the burning of the black powder also initialises the take-over cup, which, after a predetermined period of time, will initiate a burn that is subsequently communicated to the pellet payload.
  • the communication of the burn to the pellet payload can only be achieved when the pellet container sub-assembly has been jettisoned from the outer case.
  • the leaf member incorporated within the shutter plate assembly which is attached to the pellet container, will move to a position that allows the burn from the take-over cup to communicate to the pellet payload and therefore subsequently initialises the pellet payload If the pellet container sub-assembly is not jettisoned from the outer case, the leaf member will be held in a position which prevents the communication of the burn to the pellet payload, therefore preventing the initialisation of the pellet payload.
  • the cartridge may be supplied as a kit, which is assembled by personnel that have no specialist assembly skills, as required for assembling conventional
  • the cartridge may be supplied as a fully assembled unit.
  • the kit consists of:
  • a Shutter plate assembly (not including the squib device sub-assembly);
  • a selection of rear supporting rings typically four rings of various thicknesses, such as 1.5mm, 2.5mm, 3.5mm and 4.5mm).
  • kits may be supplied with the pyrotechnic sub-assembly and/or with a pellet countermeasure payload but this depends on the safety criteria of the user as these are all classed as pyrotechnic devices and warrant extreme safety measures.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Air Bags (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

Cette invention concerne un procédé d'assemblage d'une cartouche de contre-mesure (1), comprenant les étapes consistant à : déposer un élément annulaire de liaison (39) autour d'un ensemble formant contenant de charge utile (3); insérer ledit ensemble formant contenant de charge utile (3) dans un étui extérieur de ladite cartouche (2); faire pivoter ledit ensemble formant contenant de charge utile (3) par rapport audit étui extérieur (2), afin de faire coopérer une saillie d'un sous-ensemble de plaque d'obturation (16) dudit ensemble formant contenant de charge utile (3) avec un renfoncement/orifice (14) d'un sous-ensemble de plaque de scellement (6) intégré dans ledit étui extérieur (2) et faciliter de la sorte l'alignement d'une saillie de contact électrique qui s'étend à partir dudit sous-ensemble de plaque d'obturation (16) avec une partie de contact électrique dudit sous-ensemble de plaque de scellement (6); et sertir ledit étui extérieur (2) sur ledit contenant de charge utile (3) au moyen dudit élément annulaire de liaison (39).
PCT/GB2011/050622 2010-05-11 2011-03-28 Cartouche de contre-mesure WO2011141724A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1007859.0 2010-05-11
GB1007859.0A GB2480277B (en) 2010-05-11 2010-05-11 A countermeasure cartridge

Publications (1)

Publication Number Publication Date
WO2011141724A1 true WO2011141724A1 (fr) 2011-11-17

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PCT/GB2011/050622 WO2011141724A1 (fr) 2010-05-11 2011-03-28 Cartouche de contre-mesure

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GB (3) GB2480277B (fr)
WO (1) WO2011141724A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015075411A1 (fr) * 2013-11-22 2015-05-28 Wallop Defence Systems Limited Récipient pour charge utile de contre-mesures

Citations (7)

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DE8401068U1 (de) * 1984-01-16 1984-10-18 Stadlberger, Wolf-Rüdiger, 2081 Haseldorf Pyrotechnisches Scheinziel
EP0324113A2 (fr) * 1988-01-12 1989-07-19 Piepenbrock Pyrotechnik Gmbh Pièce de contact pour projectile à effet fumigène rapide
DE4035325A1 (de) * 1990-11-07 1992-05-14 Wegmann & Co Vorrichtung zur reichweitensteuerung von wurfkoerpern und geschossen, insbesondere in einem wurfsystem fuer nebelkerzen, sprengkoerper u. dgl.
US5155295A (en) * 1989-10-19 1992-10-13 Olin Corporation Cartridge assembly
US5561259A (en) * 1994-10-13 1996-10-01 Alliant Techsystems Inc. Decoy flare with sequencer ignition
USH1603H (en) * 1995-11-07 1996-11-05 The United States Of America As Represented By The Secretary Of The Navy Flare with safe-and-arm ignition system
DE10055068A1 (de) * 2000-11-07 2002-05-29 Rheinmetall W & M Gmbh Patrone

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8401068U1 (de) * 1984-01-16 1984-10-18 Stadlberger, Wolf-Rüdiger, 2081 Haseldorf Pyrotechnisches Scheinziel
EP0324113A2 (fr) * 1988-01-12 1989-07-19 Piepenbrock Pyrotechnik Gmbh Pièce de contact pour projectile à effet fumigène rapide
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015075411A1 (fr) * 2013-11-22 2015-05-28 Wallop Defence Systems Limited Récipient pour charge utile de contre-mesures
GB2520810A (en) * 2013-11-22 2015-06-03 Wallop Defence Systems Ltd A countermeasure payload container
GB2520810B (en) * 2013-11-22 2016-04-20 Wallop Defence Systems Ltd A countermeasure payload container

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GB201104608D0 (en) 2011-05-04
GB2480354B (en) 2012-03-14
GB2480277B (en) 2012-03-14
GB2480355B (en) 2012-03-14
GB201104590D0 (en) 2011-05-04
GB201007859D0 (en) 2010-06-23
GB2480355A (en) 2011-11-16
GB2480354A (en) 2011-11-16

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