Abstract: An ammunition unit has a fuze which includes an electrical trajectory safety device for preventing arming of the ammunition unit within a trajectory safety distance. An arming igniter actuable by the electrical trajectory safety device activates a movable portion for execution of an instantaneous movement to move a bursting cap disposed in the movable portion into an arming position in register with the initiation detonator included in a detonation chain and actuable by an impact or a proximity fuze contact. The movable portion is lockable by a locking pin, which is actuable on a retardation of the ammunition unit caused by a first hit of the ammunition unit against a first object located within the trajectory safety distance. Upon actuation, the locking pin locks the movable portion to prevent it from executing the instantaneous movement, even if the first hit were to cause mechanical action on the electronics which effects actuation of the arming igniter.

Abstract: The disclosure relates to a submunition disposed to be separated from an aeronautical body, for example a shell carrier canister or the like above a target area, the submunition essentially including a warhead (5), a target detector (6) and a device which imparts rotation to the submunition for scanning the target area in a helical pattern (4) during the fall of the submunition towards the target area. The target detector (6) is pivotally disposed on a carrying shaft (12a) parallel to the line of symmetry (5a) of the warhead in order to permit outward activation of the target detector (6) from a collapsed position where the optical axis of the target detector coincides with the line of symmetry (5a) of the warhead to an activated position where the optical axis of the target detector is parallel with the line of symmetry (5a) of the warhead, so as to permit free scanning vision for the target detector (6) beyond the warhead (5).

Abstract: The disclosure relates to a method of producing pyrotechnical charges by mixing and granulating the included components in water, a considerable advantage from the point of view of safety. The method according to the invention also makes it possible to vary the percentage concentration of the included components so that the obtained pyrotechnical charges can either be used as delay charges or as ignition charges. Since, moreover, an acrylate binder is included, they will obtain superior mechanical strength properties.

Abstract: An improved tool for railway track adjustment machines is disclosed which may be made by processes forging, casting, and which includes a shaft and a blade manufactured as separate entities and force-fitted together. In making the tool the lower end of the shaft is formed so that it is able to be forced between flanges located on the rear side of the blade. This lower end preferably has a transverse cross section shaped as a trapezoid with an apex angle .gamma. and is upwardly and outwardly tapered at an angle .alpha.. The flanges located on the rear side of the blade are manufactured from the same piece of material as the blade and define a slot which opens upwardly and outwardly at an angle to the direction of the longitudinal axis of the tool and the symmetrical plane of the blade. A method the slot defined between the flanges has a transverse cross section which tapers inwardly at an angle .delta. and may be formed by deforming the blade.

Abstract: A supporting cupola is provided for the propellant of a base-bleed gas generator for a projectile, shell or the like. The supporting cupola is arranged in the discharge aperture of the gas generator and provides a reduced gas outlet area from the base-bleed combustion chamber during launch of the projectile. The supporting cupola is made of a material which is easily eroded by the hot combustion gases, such as magnesium. The reduced outlet area increases the pressure in the combustion chamber during the acceleration stage of the projectile so that an improved ignition of the propellant and reduced risk of extinguishment is obtained. Due to erosion of the cupola material the outlet opening area increases with time providing a regressive burning rate of the propellant which means an increased base-bleed effect with respect to the firing range of the projectiles.

Abstract: The present invention relates to a novel type of flare charge insulation for retally burning flare charges. The flare charge insulation according to the present invention is produced by compaction of a particulate material or granulate of a mean particle size which does not exceed 1 mm. The major component parts of the granulate are an organic metal salt, and minor amounts of a combustible binder. Moreover, particulate melamine may be included in an amount of up to 20 weight per cent.The present invention also includes a novel method of producing flare charges in which both the flare charge and flare charge insulation are terminally compacted together to form a continuous unit.Consequently, the present invention also relates to the finished flare charge manufactured according thereto.

Abstract: An armor piercing explosive shell comprises a hollow charge and an impact contact member placed in the nose cone of the shell and arranged to provide electrical contact for initiation of the hollow charge upon impact of the shell against the target. To improve the penetrative performance of the shell against targets protected by active armor the nose cone of the shell is provided with a reinforced tip for mechanical penetration of the active armor and the impact contact member does not extend all the way to the tip of the shell so that upon impact of the shell against the active armor contact is obtained only after the reinforced tip has penetrated the active armor.

Abstract: A device for reducing the rotational speed of an ammunition unit, for instance a submunition unit, and at the same time imparting to the ammunition unit a lateral speed includes a body arranged to be swung out from the ammunition unit and be released in a specific outswung position. The body preferably consists of a band which is wrapped about the outer peripheral surface of the ammunition unit. One end of the band is fixed to the ammunition unit in such a way that the band is released in a specific outswung position.

Abstract: A multi-polar contactor device includes a body member with first and second side sections and a partition wall extending between the side sections to define first and second compartments. One of the side sections is removable to expose contactor wafers in one compartment to permit some of the contactor wafers to be removed.

Abstract: A rapid-fire automatic gun is provided with a first magazine for a smaller number of rounds, and a second magazine for a greater number of rounds. The magazines include first and second round advancement members. The first of the round advancement members is controlled by the automatic gun itself, therefore round advancement speed, in the first magazine, is dependent upon the gun firing rate. The second round advancement members is driven by a driver which provides a maximum round advancement speed in the second magazine, for example 300 rounds per minute, considerably less than the maximum round advancement speed in the first magazine. When a difference in advancement speeds of the first and second magazines occurs, a transferring member for transferring rounds from the second to the first magazine provides gap formation in the row of rounds in the first magazine by successively filling them during and after firing.

Abstract: A portable, low-weighted outer unit defines substantially asceptic space in which inner units are disposed. Each respective inner unit encloses electronic components which are placed on assembly boards stacked upright in the inner units. A fan is provided to effect the circulation of the air in the space and past the inner units. Another fan is provided for drawing the outside air through the heat exchanger and through the outer unit. The heat transported from the electronic components by the flow of the inner air is transferred to the outer air whereby the temperature of the inner air inside the outer unit is kept reduced.

Abstract: A method and an apparatus for reducing the spread of hit pattern for a rotationally-stabilized ammunition unit such as a projectile, which is discharged in a ballistic trajectory from an artillery piece towards a target which is to be combated including dynamic balancing of the shell (1) to reduce the effect of the air resistance between different shells, and increase hit probability. The inclination between the main axis of inertia of the shell and the geometric axis of the shell case are measured, whereafter these axes are set in parallel in that an adjustment weight (2) is mounted on one side of the point of gravity of the shell seen in its longitudinal direction. The adjustment weight (2) preferably consists of a disk or washer provided with an eccentric recess (4) for suitable weight and mass eccentricity.

Abstract: The invention deals with a method of eliminating the base resistance of a flying object. Included in the invention is a device specially adapted to the method. According to the invention base resistance is eliminated by means of the combustion gases from a combustion chamber (2) built into the object being released from the said chamber and led towards the base surface of the object via devices (9-16, 20, 24 and 30) which eliminate the greater part of the gases' motive energy before or simultaneously with their reaching an outlet located on the base surface of the object through which they are allowed to flow out under such conditions that the base resistance of the object (1, 26) is at least partly eliminated.

Abstract: An automatic weapon is provided with a device for increasing the rate of fire. The breech mechanism of the weapon is controlled by means of recoil movements which arise on discharge of the weapon, and by an operating cam and spring member included in the breech mechanism. Two case ejectors are disposed for arresting the breech block in the total recoil position of the breech and holding the breech block in the open position for ramming-home of a new round. In the arrested position of the breech block, the ejectors are exposable to the new round during its ramming cycle. A portion of the kinetic energy inherent in the round is transmitted to the ejectors which, may accompany the round and release the breech block for actuation by the spring member towards its closed position. The operating cam is movably disposed at least when the breech is located in the total recoil position.

Abstract: The disclosure relates to a gyroscope in which an electric signal corresponding to an angle (-.alpha., +.alpha.) between the rotor of the gyroscope and the frame of the rotor is generated. The rotor is provided with one or more permanent magnets. An element of magnetic material is disposed in the frame of the rotor so that the latter may move in relation to the element during its rotation. The element may be passed by the magnetic fields of the permanent magnets during rotation of the rotor so that magnetic flux changes occur in the element. The element is arranged such that the flux changes are dependent upon the above-mentioned angle and the flux changes are sensed by an electric induction winding which generates the electric signal.

Abstract: The present invention relates to a method and apparatus for high-precision straightness and flatness measurement of objects which are so large that available measuring rulers do not cover the distance to be measured. According to the invention, the measurements are carried out in stages through the use of a measuring ruler which rests on freely adjustable feet and which is used as a base for a measuring instrument with independent reference points relative to the actual surface or edge.

Abstract: A method is provided for optimizing target coverage or a computer-controlled automatic gun anti-aircraft defence system equipped with proximity fuse activated explosive shells which, are programmed by the computer to fire rounds of a predetermined number of shells and re-lay the gun between each shell so that the shells at a calculated firing range form a hit pattern covering the entire target, selected in view of a performed target identification.

Abstract: An ammunition unit (1) comprising a shaped-charge warhead which can be ignited by means of direct impact on a target (15), by means of a proximity fuze (16,17) and/or an external signal (29). The warhead has preferably an inclined position so that its longitudinal axis (5,5') is forming an angle with respect to the longitudinal axis (1b) of the unit. The warhead (4,4') is tiltable in the unit from said initial position into another inclined position depending on the type of ignition. In case of an overflying missile its warhead is directed towards the rear parts of a target, i.e. on the other side of the target seen from the direction of the flight.

Abstract: The present invention relates to a method and an apparatus for production of cartridged propellant charges for barrel weapons with charge weights up to 1.4 kg/liter.According to the invention, more granular or particle-shaped propellant powder is driven down or compacted than can be housed in free-running condition within the same volume by means of a piston or plunger (6) in a single stage down into a case (4) the inside of which is coated with a friction-reducing coating. The piston or plunger (6) can then be provided with an elastically deformable leading part (7) of e.g. rubber and/or with a conically tipped leading end (7a). According to one variant of the invention the powder is pressed down into a bag (12, 13) of combustible fibre material which has been inserted in advance down into the case (4) coated internally with a friction-reducing coating or which has itself been impregnated with a friction-reducing coating.

Abstract: This invention relates to a method and an apparatus for calibrating length indicators (dial indicators). The length indicators are secured in a stand and brought into contact with a number of feeler gauges adhered together into a connective sequence, which are fed in steps under the dial indicator in contact with the measuring point of the latter. According to the invention these feeler gauges preferably adhered to a reference plane with a circular surface extent in the horizontal plane. The reference plane is rotatably mounted in the same stand as the dial indicator and is rotatable under the same.