Safety-actuating mechanism

FIELD: blasting operations.

SUBSTANCE: invention relates to explosive engineering and can be used in fuses of projectiles. Safety-actuating mechanism comprises a housing with current leads, inside which is placed electric detonator with electrical leads, three or more MEMS keys, made in the form of microelectromechanical systems, opened in the initial position and triggered by overload, electronic time block that provides a countdown of the overload time exceeding the threshold level and forms electrical signal at the output in the event that the recorded time exceeds a certain value. One of the MEMS keys is located in such a way that the contacts are closed when the projectile contacts the obstacle under the influence of overload, exceeding the threshold level acting along the longitudinal axis of the safety-actuator. Other two or more MEMS switches are arranged in such a way, that the closing of the contacts is effected by the action of a centrifugal force when the safety-actuator rotates about the longitudinal axis, wherein the MEMS switches are disposed relatively to the longitudinal axis, preferably diametrically opposed. MEMS-key, triggered by longitudinal overload, one of the contacts is connected to one of the safety-actuator's current leads, and the other one is connected to the input of the electronic time block, output of which is connected to one of the electrodes of the electric detonator. MEMS keys, triggered by centrifugal force, are connected in series to the electrical circuit, one end of which is connected to the second actuator of the safety-actuator, and the other end is connected to the second electric outlet of the electric detonator.

EFFECT: invention allows to create a device characterized by improved overall mass characteristics, increased reliability indicators for combat use and increased safety in service circulation.

1 cl, 1 dwg

 



 

Same patents:

FIELD: aircraft engineering.

SUBSTANCE: invention relates to DRONE onboard safety system for safe combat deployment. It can be used for reception of signal indicting the self-guided missile separation from whatever carrier. In compliance with this invention, break of DRONE onboard connector electric circuits is registered at DRONE separation from the carrier. Signal failure, for example, safety control signal, is registered by appropriate receiver. Received signal and its lad for preset time are processed to change the contact device into the mode of transmission of separation signal to rocket components. Proposed method is realised by the device composed of onboard connector mate locate at rocket body, reception relay, inertial control system and separation command contact device.

EFFECT: higher reliability, decreased DRONE weight, sizes and costs.

2 cl, 1 dwg

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to military technology, namely the safety mechanisms used in pyrocartridges. The safety mechanism comprises a slider. The slider opens or closes the firing channel between the initiator and the charge. The slider is placed between the ends of two electromagnets. The slider has two cylindrical anchors. Each anchor enters into one of the electromagnets. The anchors enter into the electromagnets from the outer ends, which are fixed on the arms of the rotary stops. The second arms of the stops are preloaded by the springs to the slider. The stop, the anchor of which has a clearance with the end of the electromagnet, is engaged with the slider, preventing its possible movement. The stop, the anchor of which is in contact with the end of the second electromagnet without a gap or with a small gap, rests on the slider, without preventing its possible movement. On the slider the inclined planes are made to which the balls are preloaded by the springs.

EFFECT: providing resistance to mechanical impact and increasing in reliability.

2 cl, 3 dwg

FIELD: aircraft engineering.

SUBSTANCE: proposed device comprises case with through cylindrical bore stopped by pressure cover from one side and by end plug with internal piston from opposite side. Transfer detonator charge features U-like shape and is composed of two radial channels in the piston body and axial channel communicating the later and accommodating explosive composition embedded and/or fitted therein. Booster charges are arranged on both ends of transfer charge. One boss of the device case accommodates electric fuse and transfer charge end device for transfer of detonation commands while cotter pin is fitted in another boss. Retainer is fitted in through holes made in the walls of the case and piston to retain both by pre-compressed cylindrical spring fitted in piston blind chamber on piston one side. Spacing between electric fuse and transfer charge end element complies with that between radial channels of said charge. End plug to be screwed in device case serves to adjust the piston stroke.

EFFECT: higher reliability, multi-purpose applications, simplified design, better manufacturability, reusable feature.

2 cl, 1 dwg

FIELD: weapons and ammunition.

SUBSTANCE: proposed device consists of cotter-pin and contact device composed by the base with case fixed therein secured at missile body. Ring at top part of cotter-pin is connected by cable with carrier launching hardware. Permanent ring magnet of cotter-pin and permanent ring magnet of the base are fitted in cotter-pin and body, respectively. This device can be incorporated in long-term-guarantee-life drone at storage and operation temperature of ±60°C.

EFFECT: simplified design, higher reliability and efficiency, decreased weight, sizes and costs.

1 dwg

FIELD: weapons and ammunition.

SUBSTANCE: device includes electrical circuit for activating the electric detonator, which includes contact of electric connector for connection to control instrument, contact of electric detonator activation and activation circuit connector, shutter, integrating device, electromechanical limit stop including electric drive and conversion device of rotational movement of electric drive shaft to translational movement of connector of activation circuit. At that, conversion device has the possibility of fixing the activation circuit connector in initial and activated states. Integrating device is electrically connected to electric drive control winding with possibility of its activation after integration is completed. Besides, integrating device is connected to electric drive shaft with possibility of its fixation in initial state and release after completion of integration by means of lever-cam mechanism or by means of electromagnetic switch. Shutter is connected to electric drive shaft and arranged on the way of movement of activation circuit connector with possibility of rotation for release of the above way.

EFFECT: reducing the probability of unauthorised activation of detonating fuse protection and communication device.

3 cl, 4 dwg

FIELD: explosives.

SUBSTANCE: mechanism comprises vessel, holding firing circuit that includes electric detonator and transmission charge, firing circuit gate, installed with the possibility of displacement under action of compression spring, pyrotechnical stop to hold gate in initial condition, fixator of gate in actuated condition and electric connector for connection with detonating fuse control instrument. At the same time the mechanism additionally comprises electromechanical stop, including step motor, on shaft of which there is a device for conversion of shaft rotary motion into reciprocal displacement of engagement element with gate, and also thermal safety stop for blocking of firing circuit gate in initial condition as safe operation temperature is exceeded. The gate contains two slots to hold it in initial condition by electromechanical and pyrotechnical stops with the possibility of disengagement as per specified sequence of their actuation, and the third slot - for blocking with thermal safety stop.

EFFECT: increased safety of detonating fuse and ammunition at all stages of operation and armed application.

2 cl, 2 dwg

FIELD: military equipment.

SUBSTANCE: according to the invention, the energy and the mission data for the guided missile are transmitted from the missile erector via an induction interface. The guided missile has a capacitor member for reception and storage of electric power transmitted via the induction interface, member for reception and storage of the data transmitted via the interface simultaneously with the electric power in the combination signal of electric power and data. The missile has also a flight battery and a time stabilization system fed from the capacitor member of electric power and the flight battery. The time stabilization system is fed from the capacitor member of electric power storage during loading and salvo, and the flight battery is activated after the missile launch.

EFFECT: enhanced safety and capacity.

7 cl, 4 dwg

The invention relates to the field of remotely-contact fuses for jet depth bombs marine systems of volley fire

FIELD: explosives.

SUBSTANCE: safety-and arming fuse mechanism refers to explosion engineering. Safety-and arming fuse mechanism includes body with electric detonator, transversely moved partition located in the guide slot of the body, inertia locking mechanism with centrifugal fixing device of end position of the partition, which is made in the form of two pins located in the partition hole perpendicular to electric detonator axis, and fixing devices of initial position of the partition, one of which is made in the form of stepped cylinder arranged in the body hole and in the appropriate coaxial hole of the partition, and two other are made in the form of spring-loaded axisymmetrical centrifugal fixing devices. On one of the partition surfaces there installed is switching plate, and normally open electric contacts are arranged in the body opposite the slot. On the partition surface there is projection, and at the body slot bottom there is additional through slot, and projection of surface enters the above slot with possibility of being moved along the slot. In partition there is through hole filled with explosive agent and offset relative to electric detonator axis, with possibility of their axes' alignment and contact closure with the switching plate to be connected to power supply after the partition arming. Hole of the partition for stepped cylinder is made in the form of blind cone hole with cone angle chosen within 45-60°, and its contact edge is made in the form of spherical segment.

EFFECT: improving safety when the fuse is used.

3 dwg

FIELD: blasting.

SUBSTANCE: fuse comprises metal body 1, containing the following components - metal arming unit of segment shape, consisting of electric spark igniter 2 and moderator 3 connected by tight cavity, electric filter arranged in insulating vessel of segment shape 4, composite reaction striker consisting of stem 5, striker 6 and pressing nut 7, inertial striker 8 with spring-loaded detonating cap 9 and transmitting detonator 10 spring-loaded with percussion detonator 11, bushing 12 with pyrotechnic compound 13, side bushing 14, detonator 15 and electric cord with contact unit 16.

EFFECT: fuse provides for safety of ship-based aviation under conditions of exposure to electromagnetic fields of high intensity, high reliability of aerial bomb actuation with reduced dimensions of fuse and its safety in case of release without supply of electric pulse from carrier.

4 cl, 2 dwg

Ordnance timer // 2399020

FIELD: weapons and ammunition.

SUBSTANCE: fuse case with ring thread outer diametre D incorporates D1-thick inner web. Fuse assembly units, i.e. detonating cartridge, safety-detonating device and electronic timer, are arranged below said web. The other elements of the fuse are arranged above said web. Diametres D and thickness D1 are related by the following ratio, i.e. D=(2.0…7.0)D1.

EFFECT: higher reliability of projectile burst.

1 dwg

FIELD: weapons and ammunition.

SUBSTANCE: proposed fuse comprises casing, target reactionary pickup, and actuator. Target pickup is made up of two, four or six current conducting pins arranged regularly on case face along D-diametre circumference, and cap with inner current conducting surface of diametre D1. Said pins are isolated from the case. Even pins are connected to control circuit of actuator, while uneven pins are connected to power supply circuit. Said cap is galvanically isolated from actuator circuit. Diametres D and D1 are related by the following ratio, i.e. D=(0.3…0.8)D1.

EFFECT: higher noise immunity and reliability of proposed fuse.

2 dwg

Artillery fuse // 2397436

FIELD: weapons and ammunition.

SUBSTANCE: artillery fuse comprises reaction striker with point, inertial striker with fuse-igniter, primary safety cartridge, primary safety spring, upper limit ball, lower stop balls, membrane and safety cap. Additional safety cartridge with locking lugs and lower limit flange as well as additional safety spring are arranged between primary safety cartridge and inertial striker. Note here that distance hd from lower face of additional safety cartridge to bottom of primary bore in inertial striker are described by relationship hd=(0.15…0.35)h, where h is distance from lower face of additional safety cartridge to bottom of primary bore in inertial striker, while inertial striker has recess to receive additional spring, recess depth making L=(0.1…0.2)Hstr, where Hstr is inertial striker depth. Note also that depth of primary bore in inertial striker is increased by the thickness of limit flange.

EFFECT: higher safety of fuse.

1 dwg

Starting mechanism // 2244249

FIELD: ammunition, applicable for accomplishment of starting of the power supply source or removal of the fuse protection stage of jet projectiles.

SUBSTANCE: the starting mechanism has a hollow cylindrical body, positioned in whose upper part are the bob-weight, the first group of balls, the first cylindrical compression spring, as well as the firing pin, hammer and the percussion primer. The mechanism is featured by the fact that it is provided with the second group of balls, second bob-weight made in the form of a case enveloping with a clearance the upper part of the body, second cylindrical compression spring enveloping the body and installed between the lower base of the body and the case, and the first bob-weight is made in the form of the first cylindrical bush, installed coaxially and with a clearance in the upper cavity of the body, the inner surface of the first bush is made stepped, the larger inside diameter of the first bush is made on the side of its upper face, the larger part of the second group of balls is positioned in a through hole made in the side wall of the body, and the smaller part is positioned in the first circular groove made on the outer surface of the first bush, the balls of the second group are engageable with the inner surface of the lower section of the case, with the second circular groove made in its upper section; a guide rod is fastened coaxially on the lower base of the body, and the hammer is made in the form of the second bush loose-fitted onto the guide rod and installed with a clearance inside the first bush, a flange resting on the step on the inner surface of the first bush is made in the upper section of the second bush, through holes are made in the upper section of the first bush, with the respective ball of their first group of balls engageable with the inner surface of the side wall of the body located with its larger part in each of them, made in the lower part of the side wall are through holes corresponding to the dimensions of the first group of balls, the lower, projecting part of each ball of the first group, from the bottom, is engageable with the flange of the second bush so as to prevent its motion upwards, a guide groove is made in the side wall of the body, a pin fastened in the wall of the first bush is positioned in the guide groove, the first cylindrical compression spring is fitted onto the guide rod between the lower base of the body and the lower face of the second bush, the firing pin and the percussion cap are installed above the hammer in the upper part of the body.

EFFECT: reduced probability of unauthorized actuation.

2 cl, 7 dwg

Artillery fuze // 2210054
The invention relates to the field of military technology and can be used in detonators for ammunition for various purposes

The invention relates to the field of military equipment and specifically to contact fuzing devices for highly maneuverable missiles

Starting mechanism // 2244249

FIELD: ammunition, applicable for accomplishment of starting of the power supply source or removal of the fuse protection stage of jet projectiles.

SUBSTANCE: the starting mechanism has a hollow cylindrical body, positioned in whose upper part are the bob-weight, the first group of balls, the first cylindrical compression spring, as well as the firing pin, hammer and the percussion primer. The mechanism is featured by the fact that it is provided with the second group of balls, second bob-weight made in the form of a case enveloping with a clearance the upper part of the body, second cylindrical compression spring enveloping the body and installed between the lower base of the body and the case, and the first bob-weight is made in the form of the first cylindrical bush, installed coaxially and with a clearance in the upper cavity of the body, the inner surface of the first bush is made stepped, the larger inside diameter of the first bush is made on the side of its upper face, the larger part of the second group of balls is positioned in a through hole made in the side wall of the body, and the smaller part is positioned in the first circular groove made on the outer surface of the first bush, the balls of the second group are engageable with the inner surface of the lower section of the case, with the second circular groove made in its upper section; a guide rod is fastened coaxially on the lower base of the body, and the hammer is made in the form of the second bush loose-fitted onto the guide rod and installed with a clearance inside the first bush, a flange resting on the step on the inner surface of the first bush is made in the upper section of the second bush, through holes are made in the upper section of the first bush, with the respective ball of their first group of balls engageable with the inner surface of the side wall of the body located with its larger part in each of them, made in the lower part of the side wall are through holes corresponding to the dimensions of the first group of balls, the lower, projecting part of each ball of the first group, from the bottom, is engageable with the flange of the second bush so as to prevent its motion upwards, a guide groove is made in the side wall of the body, a pin fastened in the wall of the first bush is positioned in the guide groove, the first cylindrical compression spring is fitted onto the guide rod between the lower base of the body and the lower face of the second bush, the firing pin and the percussion cap are installed above the hammer in the upper part of the body.

EFFECT: reduced probability of unauthorized actuation.

2 cl, 7 dwg

Artillery fuse // 2397436

FIELD: weapons and ammunition.

SUBSTANCE: artillery fuse comprises reaction striker with point, inertial striker with fuse-igniter, primary safety cartridge, primary safety spring, upper limit ball, lower stop balls, membrane and safety cap. Additional safety cartridge with locking lugs and lower limit flange as well as additional safety spring are arranged between primary safety cartridge and inertial striker. Note here that distance hd from lower face of additional safety cartridge to bottom of primary bore in inertial striker are described by relationship hd=(0.15…0.35)h, where h is distance from lower face of additional safety cartridge to bottom of primary bore in inertial striker, while inertial striker has recess to receive additional spring, recess depth making L=(0.1…0.2)Hstr, where Hstr is inertial striker depth. Note also that depth of primary bore in inertial striker is increased by the thickness of limit flange.

EFFECT: higher safety of fuse.

1 dwg

FIELD: weapons and ammunition.

SUBSTANCE: proposed fuse comprises casing, target reactionary pickup, and actuator. Target pickup is made up of two, four or six current conducting pins arranged regularly on case face along D-diametre circumference, and cap with inner current conducting surface of diametre D1. Said pins are isolated from the case. Even pins are connected to control circuit of actuator, while uneven pins are connected to power supply circuit. Said cap is galvanically isolated from actuator circuit. Diametres D and D1 are related by the following ratio, i.e. D=(0.3…0.8)D1.

EFFECT: higher noise immunity and reliability of proposed fuse.

2 dwg

Ordnance timer // 2399020

FIELD: weapons and ammunition.

SUBSTANCE: fuse case with ring thread outer diametre D incorporates D1-thick inner web. Fuse assembly units, i.e. detonating cartridge, safety-detonating device and electronic timer, are arranged below said web. The other elements of the fuse are arranged above said web. Diametres D and thickness D1 are related by the following ratio, i.e. D=(2.0…7.0)D1.

EFFECT: higher reliability of projectile burst.

1 dwg

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