Abstract: In the field of infrared or electromagnetic decoys for protecting light aircraft or helicopters, pyrotechnic cartridges and ammunition comprising racks receiving the cartridges are described. Thus it is possible for the same volume of ammunition to have a larger number of shots and to carry out the loading of the ammunition simply and quickly. The cartridge (1) consists of a sole (2) fixed to a case (3), in which are accommodated a plurality of assemblies (11) comprising pyrotechnical ejection charges (6), pyromechanical assemblies (7), ignition charges (8), effective charges (9) and the caps (10). The case (3) is provided with a plurality of receptacles and comprises at its base a blocking device (4). The assemblies (11) are independent and are arranged in parallel in the various receptacles of the case (3); the sole (2) is common to the various receptacles of the case (3) and is provided with electrical fuses.

Abstract: A projectile for the dispersal of a load with time delay after firing from a launching tube (1) with hot gas under pressure is described. It comprises a cylindrical casing (2) comprising a cross wall (3) on one side of which there is a first pressure chamber (7) limited outwardly by an external side wall (4), provided with a supply opening (5) for the hot gas. The cross wall (3) limits on its other side a second pressure chamber (9) which is formed by the casing and a piston (8) axially movable in the casing, which stands in connection with said load (10). A throttled gas connection (11)is provided between the first and second pressure chambers (7, 9). The piston (8), under the effect of a pressure built up in the second pressure chamber, is arranged to perform an axial movement, firing the load (10) out of the casing (2), but not until the pressure has reached a predetermined level.

Abstract: A munitions launcher comprising a plurality of ejector assemblies each suitable for receiving a munition, and a base made of thermoplastic material molded over a portion of the periphery of the various ejector assemblies and over the rear thereof.

Abstract: An auxiliary target area chaff container for dispensing chaff and other rr counter measure materials from an aircraft includes a housing, chaff canister located in said housing; trigger wires for dispensing the chaff means for retaining said chaff canisters in said housing and means for attaching said housing to an aircraft. The chaff canisters are automatically dispensed when a bomb is released.

Abstract: An improved store launching device is disclosed wherein the inside of a sdard sonobuoy launch container is modified to accept, and properly dispense, only one smaller and lighter store. A positioning ring is fitted securely onto the inner walls a preselected distance from the discharge end to provide a seat for a perforated obturator. A slotted pressure relief ring, with the edge adjacent the obturator having a biased cut of a predetermined angle therein, is placed adjacent the obturator and the discharge end of the container to surround the store.

Abstract: A millimeter wave screening cloud is formed comprised of an aerosol of fine ibers of a carbon composition, in which the particles are of micron diameter and millimeter length. The cloud is formed by aerosolizing a compact mass of carbon composition fibers through the action of explosively bursting such compact mass in the atmosphere at the desired cloud location.

Abstract: A nosecone/fairing for reducing the aerodynamic drag of an underwing mounted chaff and flare dispenser has the shape of a flattened paraboloid and covers only the generally square front of the chaff and flare dispenser. The nosecone/fairing is made of fiberglass and attaches to the chaff and flare dispenser by mounting holes in the nosecone/fairing located to align with preexisting holes in the unmodified chaff and flare dispenser.

Abstract: Method for air dispersion of filamentary type organic material from an initial compressed form comprising a component of a propellant and/or air-activated shell-like structure.An invention comprised of a plurality of compressed filamentary organic materials, a vehicle for storing and dispersing said materials and a method for effecting air dispersion of such materials.

Abstract: A long, slender thread or filament of a slow-burning substance is metalli, by evaporation, cold-spraying, or the like, with aluminum, zinc or other similar substance. A short length at one end is not metallized but is provided with means for igniting the filament when the chaff is dispensed. A bundle of these filaments are then packed in an impermeable foil envelope and preferably filled with an inert atmosphere. When dispensed, the cloud of slow-burning filaments perform toward infrared search or tracking devices in a manner analogous to the clutter signal created in radars by conventional chaff. At the same time, the metallic coating on the filament acts as a conventional chaff, giving a capability to interfere with either infrared or microwave devices and devices with a combination of infrared and microwave capabilities.

Abstract: The invention relates to a projectile for launching and dispersing electromagnetic decoys. The projectile essentially comprises a sleeve which co-operates with a sleeve cap to form a case open at one end. The sleeve contains a decoy carrying piston and is detachably closed by a closure member. The decoy carrying piston comprises shells in the form of cylindrical sectors which keep the decoys arranged in a multi-cell cylinder as long as the piston head is not outside the sleeve. Special shaping of the shells and radical springs produce simultaneous dispersion of all the shells when the projectile operates.

Abstract: Method for air dispersion of filamentary type organic material from an initial compressed form comprising a component of a propellant and/or air-activated shell-like structure.An invention comprised of a plurality of compressed filamentary organic materials, a vehicle for storing and dispersing said materials and a method for effecting air dispersion of such materials.

Abstract: An emergency signalling device comprising an elongate shell to be fired into the air. The shell encloses a combustible propellant charge, combustible material for generating a visible smoke trail, combustible material for generating a visible spark trail, at least one explosive charge for generating an audible report, a multiplicity of radar chaff particles, and an explosive ejection charge for distributing the radar chaff particles from the shell once the shell has been propelled beyond a predetermined altitude. An ignitor wire is provided which is in contact with the propellant charge. The shell is enclosed in a barrel for storage and launching. The barrel has an external thumbstop to prevent recoil from pushing the barrel back through the hand of the operator. There is a bulkhead at the closed lower end of the barrel, on which are mounted electrical contacts connected to the ends of the ignitor wire.

Abstract: The present invention relates to a container-disperser for chaff constituted by metal strips or by metallized strips, the container-disperser comprising two end plates (130, 140) which are generally parallel and interconnected by spacers (150, 155) suitable for trapping strips of chaff so as to temporarily retain at least a portion of the chaff when the container is ejected from a case, thereby dispersing the chaff in stages.

Abstract: An explosive planar shock wave generator produces a planar wave that trav down a shape charge cone to give amplified force on the jet. In all embodiments radial waves are converted to planar waves which react with an explosive shape charge. A planar wave shaper is comprised of a conically shaped planar charge having a predetermined diameter at the base and slant heights terminating at an apex. A cylindrically shaped fast detonating charge which is positioned above the cone shaped planar charge is detonated by a detonator positioned on the surface of the cylindrically shaped fast detonating charge. A sloweer cone shaped detonating shape charge intersecting along the base of the conically shaped planar charge receive the planar shock wave as transformed by the conically shaped planar charge.

Abstract: A projectile is described which consists of a contact head and a screen material canister which may be made of aluminium, attached thereto by bolts and, optionally closed with a cover. Contact rings are arranged on an outer casing of the contact head and are connected via firing leads to a primer capsule which is located in the contact head in a centrally disposed box-shaped charge chamber having a substantially gas-tight screw cover at its base and substantially gas-tight ports for the firing leads, the ports being sealed with a sealing agent.

Abstract: High strength composite fibers are disclosed comprising a core, e.g., of carbon or the like, and a thin and uniform, firmly adherent electrically conductive layer of an electrodepositable metal, e.g., of nickel or the like. The composite fiber can be produced by electrodeposition from an electrolyte onto the core but the procedure must use external voltages high enough both (i) dissociate the metal at the core and (ii) to mucleate the metal through the boundary layer into direct contact with the core. Such composite fibers are chopped to shortened lengths to provide chaff, which is effective as a radar countermeasure.

Abstract: A radar decoy ribbon packed within a dispenser body is launched from an aircraft by creating, within a launch tube, gas pressure sufficient to expel a frangible retaining plug from the outer end of the tube, driving the dispenser body into the airstream. The body has a pair of drag vanes which open in the air stream. As the dispenser recedes from the craft, the ribbon, one end of which is attached to the aircraft by a towline, is paid out of the body. Once the ribbon is fully deployed, a drogue maintains tension on the ribbon until the towline is severed.

Abstract: A method suitable for protecting targets against attacking projectiles as rockets consist in producing an infrared jamming radiator which radiator jams the infrared target finder of the attacking projectile. The jamming radiator is produced in the vicinity of the target and may be embodied by a jammer cloud consisting of burning particles, preferably foil strips, emitting an infrared radiation more intensive than the infrared radiation of the target and staying sufficiently long in the air as to divert the rocket from the target. The strips are stowed in a container which is emitted from the target and distributes the ignited strips into the airspace near the target.

Abstract: This invention relates to an ICBM warhead including a plurality of warheads wherein at least one warhead includes a plurality of dummy warhead shells having an external configuration matched to the real warhead and a radar image resembling the radar image of the real warhead. The stacks of these dummy warhead shells are attached to one or both extremities of the real warhead in a coaxial relationship thereto and secured together forming a package comprising a plurality of dummy warhead shells and a real warhead, which package includes means for separating the dummy warheads and real warhead from each other after the ICBM warhead is launched into space. The dummy warheads separated from each other and from the real warhead and following essentially the same trajectory as the real warhead, which provide the same radar image as the real warhead, practically make it impossible to identify and intercept the real warhead by overwhelming any star war defense and strategy.

Abstract: Heating or heat generation in general can be from activated aluminides of molybdenum, zirconium or other similar ignitible metals. Activation is by leaching out some of the aluminum and leaves a product which is highly pyrotechnic but not pyrophoric. Activation of such alloy renders activated surface porous so it car receive impregnants such as lubricants to thus act as a bearing. Pyrotechnic webs for use as decoys against heat-seeking missiles can be folded so that portions interfere with the free radiation of other portions, to thus extend the time the webs remain at high temperature. The folding also improves the trajectory through which the webs fall when discharged into the air. The web can be coated with a thin layer of powdered silica, alumina or zirconia to increase the proportion of its radiation in the 8 to 14 micron range.

Abstract: A system for chaff deployment which includes a compartmentalized platelet with the bottom of the compartments formed by preformed releasable tang springs and the top of the compartment by a releasable door. The door is released to open the chamber and the tang springs are thereafter released to eject and deploy the chaff contained in the chamber.

Abstract: A spin-stabilized projectile includes a casing, a plurality of bomblets accommodated in the casing, filler pieces inserted between the casing and the bomblets, and a device for ejecting the bomblets by explosive force from the projectile at a predetermined point along a trajectory thereof. The filler pieces are of steel or tungsten and are distributed in the casing such that the projectile flies stably up to the point of ejection of the bomblets.

Abstract: A chaff device for exoatmospheric deployment as a countermeasure to radar detection of exoatmospheric objects utilizes a plurality of elongated foil members and a plurality of elongated fiber members, each for providing a dipole. The foil dipole members are disposed in an end-to-end overlapping relationship and wrapped in a coil configuration. The fiber dipole members in a group are disposed adjacent one of the foil dipole members so as to be sandwiched between adjacent layers of coil wrapped foil dipole members.

Abstract: A pyrotechnic composition for producing a screen for blocking the passage of infra-red radiation and of light, comprises phosphorus, preferably red amorphous phosphorus, dispersed in a binding agent, for example rubber. The composition is produced by forming the binding agent into a gel with solvent, dispersing the phosphorus into the gel, evaporating off solvent, and comminuting the resulting solid material.

Abstract: A grenade arrangement for forming a visual and infrared screening cloud, having a frangible body, a hollow cylindrical solid compact cohesive mass of compacted generally mutually adhered fine metal flakes of a copper composition, particularly brass, and of submicron thickness and multimicron in lateral dimensions, a cylindrical mass of HE explosive within such hollow cylindrical mass for aerosoling such metal flakes into the atmosphere, and having HE explosive percussisvely activating detonator means, a launch propulsion charge and pyrotechnic delay means between the propulsion charge and the HE explosive detonator.

Abstract: A payload-carrying projectile 1 includes a sensor 16 and a sensor carrier 15 disposed in a launch-resistant manner in a recess 14 in the tail section 11 of the projectile 1. After impact of the projectile, which is stabilized by extendable vanes 12, in the target area, where it may penetrate the ground as necessary, the object is to deploy the sensor from its protected position inside the projectile 1and to place it as high as possible above the surface of the ground. For this purpose, the sensor 16 is connected with a concertina bellows 15 which for its part leads into a reservoir 13a which is disposed in the projectile, and which is filled with polyurethane foam mixed with a propellant gas under high pressure. The connection of the reservoir 13 with the concertina bellows 15 is made via a valve 13c which is regulated by an electronic control element 13a containing, for instance, a timer switch.

Abstract: The pyrotechnic device comprises a projectile, a ground mounted device or a floating device whose casing contains a charge of titanium or other suitable combustible metal-containing material, charcoal, or other reducing agent and gunpowder such that, following ignition, infra-red emitting particles are emitted to form an infra-red radiating screen. The carbon reduces oxidation of the combustible material prior to emission.

Abstract: The pyrotechnic device comprises a projectile, a ground mounted device or a floating device whose casing contains a charge of particulate material, for example a combustible silicon-containing material in particular mixed with titanium or other suitable combustible metal-containing material and gunpowder such that, following ignition, infra-red emitting particles are emitted for forming an infra-red radiating screen.

Abstract: A visual-and-infrared-screening cloud-forming product is made by forming a slurry of fine metal flakes of copper composition, particularly brass, of submicron thickness and multimicron lateral face dimensions, together with a volatile surface-wetting agent liquid, in the form of a liquid hydrocarbon, extruding and severing the extended slurry mass into small segments, drying the small segments, placing the small segments into a desired container shape and crushing such segments in place and into such shape, in particular in a hollow cylindrical shape. An HE explosive mass is inserted into the resulting compacted hollow cylinder, enabling bursting of the compacted mass.

Abstract: A visual and infrared screening cloud is formed, comprised of an aerosol of fine metal flakes of copper composition, particularly brass, in which the flakes are of submicron thickness and multimicron lateral face dimensions. The cloud is formed by aerosoling a compact generally cohesive mass of copper composition metal flakes of submicron thickness and multimicron lateral dimensions through the action of explosively bursting such compact mass in the atmosphere at the desired cloud location.

Abstract: A cartridge launched spin stabilized disk for deploying chaff (radar countermeasure dipoles) or other expendable materials or substances from a moving aircraft. The disk, containing the expendable material is ejected from the aircraft at some elevation angle and at an angle in azimuth off of the aircraft line-of-flight and dispenses the expendable material in a more or less uniform fashion for a brief period of time as it travels away from the aircraft.

Abstract: A dispenser for launching radar deflecting elements from dispensing cassettes which are detachably supported in respective cells of the dispenser, each cassette supporting therein at least two cartridges containing the deflecting elements. Each cassette comprises guide means which cooperates with guide means in the cell in which it is inserted so as to correctly position the cassette therein, means cooperating with locking means in the cell to retain the cassette in such position, and means for electrically coupling firing pins of the cartridges to fire control means in the dispenser.

Abstract: Apparatus for ejecting and dispersing a payload of passive radiation interference material into the near vicinity of a tactical aircraft comprises a cartridge case adapted for carrying and launching at least one cylindrical payload disk, the cartridge case having a lineal length of rack teeth within its bore and the payload disk having at least a portion of its exterior circumferential extent with matching gear teeth such that upon explosively pressurizing the cartridge case the payload disk is ejected exhibiting high linear and rotational velocities. The payload disk has tapered bore wall surfaces which confine the payload material and upon being ejected the spin-stabilized payload disk disperses the payload substantially uniformly within the first few milliseconds after leaving the cartridge case.

Abstract: A pneumatic time delay valve primarily adapted for use in the ejection system of electronic or optical countermeasure devices and the like wherein an explosive squib is employed to create a momentary charge of high pressure gas used to depress the firing pin on the device to activate the device and also to push the device out of an ejection tube. The invention comprises means for splitting the pressurized gas into a first conduit communicating with the firing pin and a second conduit communicating with the device to apply the ejection pressure thereon and a time delay valve disposed within the second conduit for delaying the application of the gas to the device. During the time delay period, a piston is forced down a cylindrical bore forcing metering fluid through an orifice.

Abstract: A variable timing power storage arrangement for pre-setting a time interval between launch of a projectile and the initiation of a particular function or functions of said projectile and for storing power required inter alia for the initiation of said function or functions at the expiration of said interval, the arrangement comprising inductive coupling means for establishing before launch of the projectile an electrical coupling path between the projectile and control means associated with projectile launching means, signal generating means associated with the control means for generating a train of tone-burst modulated pulses for transmission over said inductive coupling means to the projectile, rectifying means in said projectile for rectifying the pulses of said train the first of which is utilized for charging up power storage capacitor means in the projectile to provide a d.c.

Abstract: A dipole arrangement which is located in a sheath,including segments of ejectable dipoles sequentially arranged within the sheath. The dipole can be ejected from the sheath within a short time interval and, subsequent to ejection, will rapidly form a large-surfaced and homogeneous cloud. The segments of the sheath which has a polished inner surface, as viewed in the ejecting direction, evidence an envelopment with a reducing number of windings which consists of a thin metal foil, smooth on both sides thereof, and wherein the dipoles of the enveloped segments, or the only partially enveloped segments, are centripetally pretensioned. The dipoles which are prestressed in the segments act as drive springs for the metal foil which encompass the segment whereby, dependent upon the winding number of the metal foil, there is achieved a time-delayed release of the dipoles.

Abstract: Device for producing a series of consecutive decoy clouds, in particular infrared decoy clouds which move progressively away from the actual target, in which several projectiles (A, B, C, D, E, F, G) are arranged within a thin walled discharge tube (1), each projectile is practically of identical construction and has a separate ignition disintegrator unit (10) for disintegrating it and for igniting and scattering the combustible charge (18) to form a decoy cloud, a separate ejection chamber (27) provided with a propellant charge cartridge (28) is provided on each projectile, each propellant charge cartridge (28) can be ignited via a separate electrically actuated ignition lead (5) by means of a command controlled ignition distributor unit (69) and each projectile has a separate percussion fuse (47) for the ignition disintegrator unit (10) which can be actuated by releasing its safety device (360 mechanically, its safety device (36) only being released after ignition of the propellant charge cartridge (28) wit

Abstract: The invention proposes the launching or re-entry pods, individually or in oups, from a launching platform, so directed as to precede the entering body throughout the atmospheric trajectory, and containing therein chaff material or bundles to be dispensed therefrom at programmed intervals whereby the chaff material is scattered over a larger area ahead of the entering body so that receiving radar will track the chaff material rather than the body, thus confusing during the atmospheric re-entry of the body.

Abstract: The invention relates to a cartridge (1) for launching decoy material, for example chaff. The cartridge (1) contains several cassettes (11, 12, 13, 14), each cassette containing several payloads (15) with chaff or other passive and active decoys. An electronic ignition signal device (5) ensures that the payloads (15) and the cassettes (11, 12, 13, 14) may be launched in an arbitrary sequence. By means of the invention a compact cartridge is obtained which may contain a great number of payloads (10) and which has a high reliability.

Abstract: In combination with an actuable means which is adapted to be actuated by the unlocking of an initiation means connected thereto. A velocity sensitive safety link means for connecting a lanyard to said initiation means.

Abstract: An improved warhead for transporting a plurality of useful loads which are disposed in a useful load chamber of the warhead. The warhead includes a casing in which a star-shaped hollow body is disposed. The hollow body acts as a brace for the structural assembly and has a central axial pressurized gas passage. The hollow body divides the useful load chamber into a plurality of cells in each one of which a useful load is mounted. Each cell also has an inflatable bag which is disposed radially inwardly relative to the useful load. Each inflatable bag is in fluid communication with the central axial pressurized gas passage and is adapted to expel the useful load transversely with respect to the direction of flight of the warhead upon receiving an internal or external command. Each leg of the star-shaped hollow body has longitudinally extending grooves in which a detonating charge is disposed for severing the casing.

Abstract: A cartridge for launching electromagnetic decoys with multiple charges comprises an elongated tube having an open upper end and a closed lower end, in which a plurality of flat holders, containing electromagnetic decoys are stacked over the length of the tube. At least one of the upper and lower surfaces of each flat holder is a conical surface in the shape of a flattened cone and each flat holder is provided in its lower part with a pyrotechnic charge able to project it upwards and to disperse the decoys. Each charge is connected to an adjacent charge by a pyrotechnic retarder and the upper most charge of the stack is provided with at least one pyrotechnic initiator, such that the arrangement formed by the initiator, the chargers and the retarders forms a continuous pyrotechnic chain, in order to allow, after detonation of the initiator, the successive ejection of the flat holders in a predetermined timed sequence.

Abstract: A projectile for dispersing a riot control agent material into the atmosphere at a target. The projectile is designed to open in flight and scatter a number of independent dispersal charges over a limited target area, and comprises a sabot in the form of a number of segments which are locked together prior to launching, which contains the dispersal charges and a delayed opening means which initiates opening in flight, thereby releasing the charges along approximately the same trajectory as the former projectile. In a preferred embodiment the sabot is cylindrical, in two segments hinged together at their rear end, locked together by either a collar or a pin and socket arrangement, and containing a number of cylindrical charges in line, with an axial channel. The projectile is fired from a gun, and firing initiates a pyrotechnic delay which activates an explosive or pyrotechnic charge in the channel and between the charges to open the sabot and activate and disperse the charges.

Abstract: An explosively separable casing including a cylindrical afterbody and a circular cover for one end of the afterbody is disclosed. The afterbody has a cylindrical tongue extending longitudinally from one end which is matingly received in a corresponding groove in the cover. The groove is sized to provide a pocket between the end of the tongue and the remainder of the groove so that an explosive can be located therein. A seal is also provided between the tongue and the groove for sealing the pocket from the atmosphere. A frangible holding device is utilized to hold the cover to the afterbody. When the explosive is ignited, the increase in pressure in the pocket causes the cover to be accelerated away from the afterbody.

Abstract: The invention is a process and device for storing to and then releasing a cylindrical object from a vehicle.The system according to the invention consists of a cylindrical container 1 inside which a cylindrical object 2 is placed. Container 1 has a fixed rear cap 6, an inflatable bladder 11, a disc 12 interposed between the inflatable bladder 11 and the object to be released 2, a compartment for the object to be released 2 and an ejectable cap 7 containing a locking device 8 which can be unlocked by the impact of a firing pin 9.One application of the instant invention is the release at sea, of buoys, markers, containers offering assistance to the shipwrecked or any other similar cylindrical object.

Abstract: Chaff for protecting a ballistic missile from detection by radar during re-entry into the atmosphere is shown to be made up of a plurality of dart like elements, each fabricated from pyrolytically formed graphite and shaped so as to follow a ballistic path through the atmosphere upon release from said missile and to appear as a resonant dipole to interrogating signals from a radar.

Abstract: In combination: launching apparatus including a discharge tube having an open end and a closed end; a stack of bodies in end-to-end relation in the tube; a flexible tether extending in the tube from the outermost end of the stack past the innermost end thereof, the tether crossing the stack between each pair of the bodies; apparatus at the closed end of the tube for propelling the stack of bodies out of the tube at the open end; and apparatus securing one end of the tether to the launching apparatus in such a manner that the tether does not become taut until the stack has passed out of the tube.

Abstract: A cartridge with firing actuation of the payload comprises a case solid with a case bottom which houses a threaded member constituting an ejection nozzle, and in front of the latter a missile provided with a delay ignition chain interrupted at the level of a transversally movable slide which comes into fire transmission position only after a predetermined delay. The cartridge has in addition a striker device actuated on impact so as to ignite the delay firing chain on impact, and a stabilizer device ensuring an axial deceleration permitting the satisfactory operation of the striker on impact.

Abstract: This invention relates to the safety of ammunitions.The projectile of a cartridge has a base which houses a safety stop consisting of a transversely slidable valve. A device ensures that the valve cannot be released until the projectile has been subjected to a powerful acceleration. Another safety device very advantageously ensures that the pyrotechnical chain inserted in the base functions only when the pressure of the ejection charge has been able to release a sealing-block.In particular, the invention may be applied to infra red window releasing cartridges.

Abstract: An IR source and method for generating IR radiation whereby a propellant is urned in a first chamber to produce a product gas which is exited through a critical exit, is accelerated to a supersonic velocity by expanding into a second chamber, is passed through a standing shock wave in the chamber to reduce the gas velocity to a subsonic level, is exited through radial orifices into a larger third chamber where the gas is mixed to obtain a substantial uniformity in temperature and specie, is accelerated by expansion to a chosen subsonic velocity, and is exhausted to the atmosphere.