89results about "Mechanical fuzes" patented technology

Methods and devices for differentiating an actual air drop of a gravity dropped weapon from an accidental drop of the weapon onto a surface. The method including: connecting a first end of at least one lanyard to an airframe; releasably connecting a second end of the at least one lanyard to a power generation device such that release of the second end with the power generation device initiates power generation by the power generation device; and releasably connecting a third end of the at least one lanyard to at least a portion of an air velocity sensor such that release of the third end one of activates or exposes the air velocity sensor to an air stream; and differentiating the actual air drop from the accidental drop based at least on a detection of an air velocity by the air velocity sensor.

A projectile, air vehicle or submersible craft with a spinning or rolling fuselage, rotating on its axis, has a collar which can be positioned relative to a longitudinal axis of the projectile using aerodynamic forces. Aerodynamic surfaces, such as lift-producing surfaces, for example tails or canards, are coupled to the collar, and rotate with the collar. An actuator system or mechanism controls orienting of the lift-producing surfaces, such as tilting of the lift producing surfaces, to direct the collar into a desired position relative to a longitudinal axis of the projectile, and to maintain the collar in that position. With such a control the projectile is able to be steered using bank-to-turn maneuvering. The actuator system may use any of a variety of mechanisms to move the lift-producing surfaces, thereby positioning the collar.

A detonator for a hand grenade fuze comprises a detonator case; a slider that is transversely reciprocable in the detonator case from an unarmed position to an armed position, the slider including a longitudinal through-hole filled with a primary explosive; a spring that biases the slider to the unarmed position; an arming mechanism attached to the slider, the arming mechanism comprising a shape memory alloy; an explosive lead disposed below the slider; and a booster charge disposed below the explosive lead.

A safety fuze includes a magneto striker generator (MSG) as its a power generation source. The MSG provides energy to energize an electronic unit and a safety and arming device. The safety fuze allows safety and arming of military hand grenades, with a fully out-of-line explosive initiator and an integrated power generation means, for improving safety and performance. The MSG includes a striker and a receiving bobbin that houses a conductive coil. The striker comprises a permanent magnet that is mounted on a pivot mechanism for allowing a rotational displacement of the permanent magnet, into the bobbin, in order to generate an electrical current. As the permanent magnet is being inserted inside the bobbin, the magnetic flux change induces an electric current in the coil, creating the necessary energy for the fuze operation.

The invention discloses an antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze with a centrifugal self-destruction function. The antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze comprises an upper body, a chamber interior ignition mechanism, a gunpowder timing mechanism, a centrifugal self-destruction mechanism,a ball rotor safety and arming mechanism, a fuze body, a detonating tube and a booster tube; the chamber interior ignition mechanism is located on the upper part of the upper body; the gunpowder timing mechanism achieving a timed detonating function is located between the chamber interior ignition mechanism and the centrifugal self-destruction mechanism; the rear end of the centrifugal self-destruction mechanism tightly presses the ball rotor safety and arming mechanism, and thus the ball rotor safety and arming mechanism cannot rotate; the front end of the detonating tube is adjacent to theball rotor safety and arming mechanism; and the front end of the booster tube is adjacent to the rear end of the detonating tube, and the rear end of the booster tube serves as a fuze output end to beused for detonating charged explosives, containing a silver iodide grain, in a projectile. The antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze has the centrifugal self-destruction function, the dud rate can be greatly decreased, and safety is good.

A rocket-propelled grenade includes a payload section, a selectable fuzing section joined to the payload section, and a propulsion section joined to the selectable fuzing section. A rocket-propelled grenade includes a propulsion section and a payload section operably associated with the propulsion section. The payload section includes a shell, one or more penetrators disposed in the shell, and a charge for compromising the shell to deploy the one or more penetrators when the charge is initiated.

The present invention relates to an igniter mechanism for a toy hand grenade which comprises a pull string ignition assembly, a housing that encases the pull string ignition assembly and a stopper that is located in the housing. The igniter mechanism may meet the requirements of safety, reliability and low production cost.

A propelled lance provides a wounding non-lethal anti-insurgent action when stepped on by piercing an enemy insurgent's foot with a lance penetrator. The lance penetrator lodges in the foot and further penetration is impeded by a stop plate. The lance penetrator may insert an RFID or other identifiable device or other payload into the insurgent. The lance penetrator provides anti-personnel, anti-vehicle and anti-robot action.

The invention discloses a fuse capable of improving grazing impact and self-destruction reliability. On the basis of the original standard product design, a piston type part (such as a support barrelor a shearing barrel) capable of sliding axially is additionally arranged at the head of the fuse, the piston type part is pushed to move axially by the aid of target fragments produced when the fusecollides with a target or ground sediments during landing, a self-destruction spring is compressed, then a firing pin is pushed to trigger a detonator, the explosive sequence is detonated, and projectile detonation is realized. Meanwhile, the piston type part capable of sliding axially can stop foreign matters such as the ground sediments and the like from entering an inner cavity of the fuse to hinder movement of the firing pin when the fuse lands (particularly grazes), the firing pin stabs the detonator reliably, and the reliable grazing impact effect of the fuse is guaranteed. The fuse is simple in structure, and few changes are made on the original structure.

A dual purpose munition includes a housing; a shaped warhead disposed in a front interior of the housing; a vertically orienting explosive disposed on a front end of the housing; a safe and arm device explosively connected to the shaped warhead for arming and detonating the shaped warhead; a dual sensor circuit comprising an E-field sensor board, a B-field sensor board and a processor board; and a power source connected to the dual sensor circuit and the safe and arm device.

A weapons cable retention device is used for separating an electrical connection, and retaining a cable and an electrical connector coupled to an aircraft, when a munition, such as a bomb or a missile, is released from the aircraft. The cable retention device includes a structural coupling for coupling to the aircraft, a rod having an adjustment mechanism for adjusting the length of the rod, and an attachment mechanism for attaching to the electrical connector. The cable retention device provides a substantially rigid coupling to secure the electrical connector. The cable retention device may be configured so that the attachment mechanism engages lanyard holes of a standard electrical connector. According to one embodiment, the structural coupling may include a collar that receives a bail bar on the aircraft structure through a hole therein.

The invention discloses an electromechanical time fuse of an antiaircraft gun hail-mitigating cloud-seeding round. The fuse comprises an upper body 1, a wind cap 2, an electromechanical timing ignition mechanism 3, a fuse body 4, a ball rotor safety and arming mechanism 5 and a booster 7, wherein the wind cap 2 covers the front end of the upper body 1, the bottom of the wind cap 2 is closed and fixed in an annular groove in the outer side of the upper body 1, the electromechanical timing ignition mechanism 3 comprises a magnetic recoil power supply and an electronic timing and ignition module,and is positioned inside a cavity of the upper body 1, the rear end of the electromechanical timing ignition mechanism 3 is adjacent to a primary-explosive-free detonator 17, the ball rotor safety and arming mechanism 5 is located inside a cavity of the fuse body 4, the top end of the ball rotor safety and arming mechanism 5 is adjacent to the primary-explosive-free detonator 17, a bulge part ofthe front end of the booster 7 is adjacent to the ball rotor safety and arming mechanism 5, the rear end of the booster 7 serves as a fuse output end, and the the booster 7 is used for initiating projectile charges. According to the electromechanical time fuse of the antiaircraft gun hail-mitigating cloud-seeding round, the timing is accurate, the manufacturability is good, and the reliability ishigh.

A projectile, air vehicle or submersible craft with a spinning or rolling fuselage, rotating on its axis, has a collar which can be positioned relative to a longitudinal axis of the projectile using aerodynamic forces. Aerodynamic surfaces, such as lift-producing surfaces, for example tails or canards, are coupled to the collar, and rotate with the collar. An actuator system or mechanism controls orienting of the lift-producing surfaces, such as tilting of the lift producing surfaces, to direct the collar into a desired position relative to a longitudinal axis of the projectile, and to maintain the collar in that position. With such a control the projectile is able to be steered using bank-to-turn maneuvering. The actuator system may use any of a variety of mechanisms to move the lift-producing surfaces, thereby positioning the collar.

Mines are fabricated in the form of munitions, specifically including cartridges for firearms and several types of grenade, including both hand grenades and rocket-propelled grenades, the cartridges containing either very high energy explosives or very high temperature burning materials, that upon ignition will at least destroy the firearm in which fired or may exert lethal force against the user, while such mines in the form of grenades will explode immediately upon being activated rather than exhibit the expected time delay, both types of mines being supplied surreptitiously to an enemy force for its unknowing use, thereby to direct the lethal effect of such munitions against those enemy forces rather than the friendly forces as the enemy forces would have intended.

The invention relates to a steel-plastic combined fuse of an artificial precipitation projectile, which comprises a fuse body, a side ignition mechanism, a time delay self-destruction mechanism and an auxiliary detonator. The side ignition mechanism and the time delay self-destruction mechanism are installed on the upper part of the inner bore of the fuse body, the auxiliary detonator is installed at the lower part of the inner bore of the fuse body; the fuse body is combined by the fuse steel body at the lower part and the cast plastics at the upper part; the side ignition mechanism comprises an ignition base, the position beyond the center of the ignition base is provided with a groove; the time delay self-destruction mechanism comprises a middle priming tube, in which 611 pieces of miniature smoke gunpowder are equipped, the pressing quality of which is 53-58mg. The invention solves the problems of large quantity of residual fractions after the full explosion of artificial precipitation projectiles, the incomplete explosion, misfire, and the like existing in the artificial precipitation projectiles.

A stun grenade includes a fuze assembly secured to a housing adjacent gas outlet ports. The fuze assembly includes a fuze body having contact surfaces located in the flow path of the gas from the outlet ports so that gas flowing from the outlet ports impinges on the contact surfaces. The contact surfaces of the fuze body extend at an angle of no more than about 50 degrees to the first direction.

The invention relates to an insurance-type human rain shell fuze, which comprises a fuze body, a self-destructive mechanism and a booster. The self-destructive is arranged on the upper part of the fuze body inner hole, the booster is arranged at the lower part of the fuze body inner hole; the fuze body consists of a fuze steel body part in the lower part and a molding plastic part in the upper part; and a slider isolation mechanism is arranged between the self-destructive mechanism and the booster, and the self-destructive booster and the slider isolation framework are separated by a bottom paper gasket. The booster is arranged in the inner screw thread of a centrifuge slider mechanism. The slider isolation mechanism adopts double environment simple slider insurance mechanism. The fuze can solve the semi-explosive shells of current artificial rainfall-increasing eliminating-hail shells, the high rate of misfire, large quality of explosive remnants which cause potential security issues.

The present invention relates to an igniter mechanism for a toy hand grenade which comprises a pull string ignition assembly, a housing that encases the pull string ignition assembly and a stopper that is located in the housing. The igniter mechanism may meet the requirements of safety, reliability and low production cost.

A grenade includes a body having at least one interior chamber; a fuze assembly attached to the body, that fuze assembly being capable of detonating the grenade and a safety lever movable between a first position to a second position which engages the fuze assembly. A firing pin is engageable with the safety lever to prevent the lever from being moved to the second position. A retaining clip retains the firing pin and prevents premature release of the pin from the grenade wherein the retaining clip is integrated within the safety lever.

A mechano-electrical fuse (10) for a hand grenade (76), which has a spring element for the storage of mechanical energy and which has a drive device connected to the spring element for driving an electrical generator (28) through mechanical energy which is stored in the spring element. The electrical generator (28) is connected through an electronic delay circuit (56) with a detonator (46), with which a booster charge (48) is associated. A barrier (40) is provided between the detonator (46) and the booster charge (48). The spring element is formed by a tensioning spring (24) associated with the handle lever (18) of the hand grenade (76). The drive device has a taut cable line (68) which is fixed at one end (70) to the generator shaft (30) and wound with a number of turns (72) around the generator shaft (30). The second end (74) of the cable line (68) is mounted to the handle lever (18). Fixed to the generator shaft (30) is a flywheel mass (32) which is fixed releasably by a shearing element (92) in a fuse housing (16) of the mechano-electrical fuse (10).

An intelligent mine device includes a detection unit configured to detect an approach of a target object. The device includes an analysis processing unit configured to radio-communicate with the target object to perform identification of friend or foe against the target object. The device a blasting unit configured to blast the intelligent mine device when the analysis processing unit identifies the target object as the foe.

A device for enabling safe / arm functionality in a gravity dropped weapon detachably connected to an airframe where the device includes: an elastic element disposed in a shell of the weapon; a releasable connection between the weapon and the airframe to release one or more of a stored and generated energy in the elastic element; and a piezoelectric member connected to one end of the elastic member for converting the one or more of the stored and generated energy to an electrical energy. The releasable connection can include: a link having a movable connection for movement of the link relative to the shell between a first position constraining the elastic element from movement and a second position releasing the elastic member to generate the electrical energy; and a lanyard for tethering the link to the airframe such that the link is moved to the second position upon the weapon being released from the airframe.

An auxiliary safety mechanism for a grenade to prevent detonation from shockwaves, heat, fragments, etc., the grenade including a fuse housing containing a delay detonator and explosive train. In at least one embodiment, the fuse housing includes a reversible slider element interposed between the delay detonator and the rest of the explosive train to form a barrier therebetween when the grenade is in an unarmed condition, and when the slider element is withdrawn the barrier between the delay detonator and explosive train is removed leaving the grenade in an armed condition. In another embodiment, a further safety mechanism involves connecting the two sections of the housing with a weak connection that ruptures prior to the explosive contained therein reaching the critical explosive temperature / pressure.

Methods and devices for differentiating an actual air drop of a gravity dropped weapon from an accidental drop of the weapon onto a surface. The method including: connecting a first end of at least one lanyard to an airframe; releasably connecting a second end of the at least one lanyard to a power generation device such that release of the second end with the power generation device initiates power generation by the power generation device; and releasably connecting a third end of the at least one lanyard to at least a portion of an air velocity sensor such that release of the third end one of activates or exposes the air velocity sensor to an air stream; and differentiating the actual air drop from the accidental drop based at least on a detection of an air velocity by the air velocity sensor.

A grenade firing mechanism (12) includes a body (24) containing a firing pin (20) and a tiring pin actuator mechanism (22). A safety system includes twist to arm collar (70) and a safety interlock (92). The collar is movable between an unarmed position and an armed position and tire safety interlock is movable between a collar locking position, a collar release position and a firing position. When the collar (70) is in the unarmed position and the safety interlock (92) is in the collar locking position, actuation of the firing pin (20) is inhibited and the safety interlock (92) inhibits movement of the collar to the armed position. When, the safety interlock (92) is in the collar release position, the collar (70) is able to be moved between said unarmed and armed positions and actuation of the firing pin is inhibited. When the collar (70) is in the armed position and the -safety interlock (92) is in the firing position, actuation of the firing pin is enabled.

A method for neutralization of the explosive content of mines and UXO by essentially completely consuming the explosive by combustion or decomposition before any explosion occurs. A charge of a compound that reacts with an extremely high heat-release rate is ignited on or near the casing of the device to be neutralized. The intense exothermic reaction generates high temperature combustion products that will disrupt the casing, thus leading to combustion or decomposition of the explosive. The holes melted in the mine casing enable ignition of a large area of the explosive charge and provide easy access for atmospheric air to support active burnout of the explosive. The apparatus comprises the compound that reacts with a high heat release rate, an ignition source, and a container for the assembly.

The munition employs an energetically initiated electromagnetic pulse through a coil which induces a voltage intended to be used for the operation of an electronic time delay circuit and subsequent ignition of a detonation device. Explosive energy from a primer is employed to move a generator core through a generator coil to induce the voltage. The voltage is supplied to a delay circuit. After a set time, the delay circuit supplies power to a laser igniter which detonates the munition. A striker assembly, in addition to initiating the primer, functions as an out of line safety as well as an electric safety.

A rocker-arm igniter for irritation grenades, hand grenades, smoke or fog grenades, or similar, includes a rocker arm that may be pivoted by a tensioned spring about a pivot axis from a initial position into a second position, and that is firmly attached to a striker that, when the rocker arm is pivoted into its second position, strikes a igniter element of the rocker-arm igniter. A first mechanical securing device with a first securing device element is provided that holds the rocker arm in its initial position. Additionally, a second mechanical securing device with a second securing device element is provided that also holds the rocker arm in its initial position. The rocker arm is released to pivot into its second position only after removal of both securing device elements.