36 results about "Explosive train" patented technology

A two-stage acceleration sensing apparatus is disclosed which has applications for use in a fuze assembly for a projected munition. The apparatus, which can be formed by bulk micromachining or LIGA, can sense acceleration components along two orthogonal directions to enable movement of a shuttle from an “as-fabricated” position to a final position and locking of the shuttle in the final position. With the shuttle moved to the final position, the apparatus can perform one or more functions including completing an explosive train or an electrical switch closure, or allowing a light beam to be transmitted through the device.

A primer adapter allows hand grenade fuzes of different configurations to use the same primer for the ignition of their explosive trains.

A Safe-and-Arm system for the prevention of unintentional operation of an explosive device by interrupting a detonation train, the system employing an interruptive transfer assembly made of silicon and suitable for implementing in a MEMS device, the assembly including a silicon based transfer charge carrier on a porous explosive passageway made by etching, the passageway extending between at least two ports on the circumference of the transfer assembly, and a drive means that can mechanically bring about at least one armed state of a detonation train.

The invention discloses a deformable energy-gathering cutting device for grid breaking, which belongs to the technical field of ammunition. The cutting device includes two action units, an explosion transfer sequence, a detonator and an elastic ferrule; the two action units are connected through an explosion transfer sequence, and the action unit is connected to the fence bar through an elastic ferrule fixed to itself; The detonator described above is installed on one action unit, and the detonator receives an external detonation signal and transmits the detonation signal to another action unit through the detonation transmission sequence, so that the explosives in the two action units are detonated synchronously, and the energy generated by the explosive is realized on the fence. Cut damage. The invention uses the energy-gathering effect of the charge to realize cutting and destroying the fence. The device can not only cut the fence bars on both sides separately, but also cut the opposite side or the same side of a certain fence bar, so as to realize the rapid and efficient demolition of the fence gate. .

The invention discloses a flying plate thermosensitive squib which includes a pedestal, a packaging base and a detonation propagation sequence which is installed on the pedestal and is packaged by thepackaging base. A first columnar accommodating chamber and a second columnar accommodating chamber are arranged on the pedestal and are connected to each other. A square pedestal groove and a squarepedestal boss are arranged at one side of the second columnar accommodating chamber. The square groove is located at the inner side of the square boss. The detonation propagation sequence comprises first charge and second charge, wherein a flying plate is located beside the first charge. A gun barrel is disposed at the outer side of the flying plate. A charging ring is arranged on the outer side of the gun barrel. The packaging base includes a square packaging boss and a square packaging groove. A third columnar accommodating chamber is arranged on the packaging base in the opening direction of the second columnar accommodating chamber, wherein a thin sheet is arranged on the inner side of the third columnar accommodating chamber. The flying plate thermosensitive squib guarantees action spontaneity in special status, such as fire hazard, and solves a problem of difficult of conversion from combustion to detonation of an insensitive explosive, and can enhance detonation development constrain.

The invention discloses a preparation method for an HMX explosive with a snowflake-shaped structure and belongs to the technical field of energetic materials. The preparation method comprises the following steps: 1) adding HMX crystal into a first organic solvent under room temperature, and then fully dissolving HMX crystal in the manner of mechanical stirring, thereby acquiring a clear transparent HMX solution; 2) using an injector for sucking the HMX solution acquired in step 1), injecting to a second organic solvent under a stirring condition, keeping stirring for a period of time, and thenfiltering, washing with deionized water and drying, thereby acquiring the HMX explosive with the snowflake-shaped structure. The HMX explosive prepared according to the invention has a unique fractalstructure and has an important significance in national defense fields, such as technologies of initiation and explosion-propagation sequence of weapon charging, miniature initiation instruments andinitiating explosive devices. The preparation method disclosed by the invention has the advantages of simple process, short period, mild reaction conditions, easiness in amplification, low cost, and the like, and has an excellent application prospect.

The invention discloses a low-ignition-voltage and high-power-output miniature detonator. The low-ignition-voltage and high-power-output miniature detonator mainly comprises a foot line, a ceramic electrode plug, a detonator shell, a semiconductor bridge chip, an ignition explosive, a primary explosive and a high explosive. The Cl-20 high explosive and the carboxymethyl cellulose lead azide primary explosive are sequentially pressed into the detonator shell to increase the axial output power of the miniature detonator, and a semiconductor bridge ignition component is fixed at a mouth part of the detonator shell by performing a detonator shell necking-in process and coating a sealant at the mouth part. The technical indicators of the miniature detonator disclosed by the invention are characterized in that the minimum full-ignition voltage is as low as 3.83V (10 micro F), the minimum full-ignition energy is 0.074mJ, the safe current is not less than 200mA, the size of the detonator is not more than phi 2.5*4 mm, and when the output detonation pressure of the detonator is tested by a manganin pressure gauge, the maximum output power of the miniature detonator achieves 13-15 GPa. Compared with the technical indicators of an existing bridge wire type electric detonator, the comprehensive performance of the detonator is greatly improved. The low-ignition-voltage and high-power-output miniature detonator disclosed by the invention is suitable for design of explosive trains of micro-electromechanical systems requiring low ignition voltage and high power output.

The invention relates to an auxiliary device for blasthole charging, which comprises a standpipe and a charge pipe. The charge pipe is obliquely connected to the side wall of the standpipe. The side wall of the tube is provided with an open groove parallel to the axis, and the top of the open groove is tapered gradually expanding from bottom to top. When charging the gun barrel, connect the charge tube with the explosive vehicle charging hose; put the lower opening of the standpipe into the blast hole; put the detonating bomb into the blast hole from the upper mouth of the standpipe, Put it into the open slot; the explosive vehicle starts to charge the blast hole until it reaches the charge height for installing the spacer, and the explosive vehicle stops conveying the explosive; put the spacer into the blast hole from the upper mouth of the standpipe 1; continue charging until the blast hole is reached. The gun hole requires charge. The device quickly places the spacer and the detonating bomb, improves the work efficiency of workers, and reduces the charging time. The production cost is low, and it is easy to carry, and solves practical engineering problems such as complex charging process, time-consuming, and labor-consuming.