The present invention relates to a safety and arming unit for initiation of underwater charges, comprising: a housing; a detonator; an interrupter slidable within the housing from a first position in which a firing chain from the detonator to a charge is interrupted, to a second position, in which the firing chain is complete; a first member configured to cooperate with the housing and the interrupter to form a first interlock, wherein, upon the first member being in a first position, said interlock locks said interrupter in said first position, and upon the first member being in a second position, said interrupter is free to slide relative to said first member; a second member configured to cooperate with the housing and the interrupter to form a second interlock, mechanically independent of said first interlock, wherein, upon the second member being in a first position, the interlock locks said interrupter in said first position, and upon the second member being in a second position, said interrupter is free to slide relative to said second member; and a plurality of electrical switches arranged in series, switchable from a first configuration in which the detonator is electrically isolated from a remote initiation firing system, to a second configuration in which the detonator is in electrical communication with a remote initiation firing system; wherein, upon the first member being in the second position, and the second member being in the second position, the interrupter is slidable from the first position to the second position upon being subjected to an external water pressure of at least a predefined threshold value. Upon the interrupter being in the second position, the interrupter acts on the plurality of electrical switches to switch said plurality of switches to said second configuration.

An unmanned vehicle and a method of operating the vehicle are provided. The vehicle includes a fuselage and at least one thrust device coupled to the fuselage. A first payload module having an first attachment plate is fixedly coupled to the fuselage, the first payload module further having a first control module removably coupled to the first attachment plate and a first payload having a first energetic element. A second payload module having an second attachment plate is fixedly coupled to the fuselage adjacent the first payload module, the second payload module further having a second control module removably coupled to the second attachment plate and a second payload having a second energetic element.

A fireworks kit can have a set of fireworks having multiple fireworks of different types and a plurality of detonators in communication with the fireworks that are configured to launch or detonate a firework attached thereto. A remote controller or mobile device can be in communication with the detonators and operable to provide dynamic or user customizable control of detonation, launching, or ignition of the fireworks.

A method for storing energy in a device upon acceleration of the device. The method including: permitting a first movable member configured to be movable in one direction relative to a base; biasing the first movable member in a second direction opposed to the first direction; permitting a plurality of second movable members, to be each movable towards an engagement surface of the first movable member when subjected to a predetermined acceleration event in a direction offset from the first direction; and sequentially engaging a portion of the engagement surface, which when pressed causes a movement of the first movable member in the one direction against a biasing force of the first biasing member, upon an increasing acceleration of the base such that energy is stored in the first biasing member.

A launcher and projectile system include at least one magnet disposed on or within the launcher for charging a wire coil of the projectile to energize the projectile, thereafter having a housing of the projectile rupture, disintegrate, separate or otherwise have an opening created therein after launch to release a payload. In another embodiment, an accessory for a launcher and projectile is provided, the accessory comprising a magnet for charging a projectile that is launched by the launcher. The strength of magnetic field of the magnet may be adjusted for selective performance of the projectile.

The invention relates to an electronic ignition unit fora stun grenade, comprising at least one energy source, at least one igniter, at least one control device, wherein the electronic ignition device further comprises an igniter driver connected to the at least one energy source and to the at least one control device.

A piezoelectric generator for generating power upon an acceleration and upon a deceleration of a body. The piezoelectric generator including: first and second masses; first and second springs, the first spring being connected to the body at one end and to the first mass at an other end, the second spring being connected to the body at one end and to the second spring at an other end; and a piezoelectric material connected to the first and second masses such that the piezoelectric material generates power when the body is accelerated or decelerated.

A digitally controlled hand-tossable explosive delivery receptacle comprises a ruggedized reusable compartment enclosing a digital circuit and a disposable cartridge holding one or more explosive chemical agents and a primer. The disposable cartridge is configured to be mounted to the ruggedized reusable cartridge, and a high-strength bulkhead incorporated into the reusable or disposable compartment that separates the digital circuit from the chemical agents. The reusable compartment is sufficiently ruggedized to withstand the ignition of the primer and the detonation of the chemical agents to be reused with one or more additional disposable cartridges. In one implementation, the delivery receptacle uses a commercial airbag initiator as the primer, which is arranged in relation to the one or more chemical agents so that when the initiator is activated, it generates a pressure wave that expels the one or more chemical agents from the grenade.

A fuze for a projectile intended to be fired by a cannon by ignition of a propellant charge using an electric igniter. This fuze is allowed to pase from a safety position to an armed position following the fire by releasing at least two different safeties. This fuze includes a capacitor which is intended to be connected to the electric igniter and which charges during the ignition of the propellant charge, and also a computer which detects the charge of the capacitor in order to allow the arming of the fuze when this charge is greater than or equal to a reference value, the charge of the capacitor constituting a first fire safety.

The invention relates to an electronic ignition unit for a stun grenade, comprising at least one energy source, at least one igniter, at least one control device, wherein the electronic ignition device further comprises an igniter driver connected to the at least one energy source and to the at least one control device.