Electrical ignition of electrically operated propellant in a gas generation system provides an ignition condition at an ignition surface between a pair of electrodes that satisfies three criteria of a current density J that exhibits a decreasing gradient along an axis normal to an ignition surface, is substantially constant across the ignition surface and exceeds an ignition threshold at the ignition surface. These criteria may be satisfied by one or more of an angled electrode configuration, a segmented electrode configuration or an additive to the electrically operated propellant that modifies its conductivity. These configurations improve burn rate control and consumption of the available propellant and are scalable to greater propellant mass to support larger gas generation systems.

Weapon equipment including a launcher and a projectile, the projectile having an operating head, a tail and a weight between 750 g and 1000 g. The tail includes a tube made of an aluminum alloy having an inner diameter between 21.5 and 22.5 mm, a stroke between first and second locations between 110 mm and 120 mm, and a thickness in the vicinity of the first location between 4.6 mm and 5 mm, a piston movable between the first and second locations and defining with the tube a hermetically-sealed propulsion chamber, a propulsion charge placed in the propulsion chamber, the propulsion charge including a powder having a heat of combustion between 3500 J/g and 4000 J/g, the propulsion charge having a mass greater than 2.4 g and less than 3.7 g.

An igniter assembly including, an igniter, a metal collar arranged around the igniter, and a resin joining portion, the collar including, a joining surface portion having an annular surface covered with the resin joining portion, a first joining groove opened in the annular surface and including a first inner circumferential edge that has a first corner portion formed on the entire circumference of the first inner circumferential edge, and a second joining groove opened in an inner wall surface of the first joining groove and including a second inner circumferential edge that has a second corner portion formed on the entire circumference of the second inner circumferential edge, and the joined state being established when the resin joining portion enters the first joining groove and the second joining groove in a state in which the resin joining portion presses the first corner portion and the second corner portion.

An igniter assembly including, an igniter, a metal collar arranged around the igniter, and a resin joining portion, the collar including, a joining surface portion having an annular surface covered with the resin joining portion, a first joining groove opened in the annular surface and including a first inner circumferential edge that has a first corner portion formed on the entire circumference of the first inner circumferential edge, and a second joining groove opened in an inner wall surface of the first joining groove and including a second inner circumferential edge that has a second corner portion formed on the entire circumference of the second inner circumferential edge, and the joined state being established when the resin joining portion enters the first joining groove and the second joining groove in a state in which the resin joining portion presses the first corner portion and the second corner portion.

Delay tools, systems and methods for achieving a selection of alternative delay times, a tool of which including a body, a drill bit operable relative to the body and a knob operably connected to the drill bit, and operably disposed relative to the body for engagement of the body with a rocket motor bulkhead and the drill both relative to a delay to provide for achieving a selection of alternative delay times.

An ignition system includes a multi-metallic ignition body that has at least two metallic elements in contact with each other. The metallic elements define an ignition initiation temperature above which there is a self-sustaining alloying reaction. A fluorine-containing body is in contact with the multi-metallic ignition body. The metallic elements may include palladium or palladium-ruthenium and aluminum.

The present invention relates a safety ignition device for a high altitude dual pulse motor according to the present invention, and can prevent accidental ignition of an ignition device or a propulsion engine while efficiently using a space by installing the safety ignition device in front of a combustion pipe, increase the reliability of ignition, and maintain the air tightness of the inside of the propulsion engine and the ignition device even in a high altitude environment.

A squib assembly for a non-electric initiator of an anti-personnel obstacle breaching system includes a housing configured to connect to the igniter of a rocket motor of the anti-personnel obstacle breaching system, a slider assembly slidably contained within the housing and configured to connect to a shock tube of the non-electric initiator, and a pyrotechnic element disposed within the housing. Upon activation of the non-electric initiator, the squib assembly is configured to mechanically puncture a base of a initiator sleeve of the rocket motor and to thermally initiate ignition of the rocket motor.

The present invention relates a safety ignition device for a high altitude dual pulse motor according to the present invention, and can prevent accidental ignition of an ignition device or a propulsion engine while efficiently using a space by installing the safety ignition device in front of a combustion pipe, increase the reliability of ignition, and maintain the air tightness of the inside of the propulsion engine and the ignition device even in a high altitude environment.

The present invention relates to an igniter assembly, including a blast tube provided with a supporting part formed in a cylindrical shape, and an aft-closure part having front and rear sides through which igniter combustion gas is emitted, an igniter disposed adjacent to the rear side of the aft-closure part and storing ignition pellet therein, and a blast tube stopper formed in a shape surrounding the supporting part, accommodating the igniter, and coupled to the rear side of the aft-closure part, wherein the aft-closure part includes a plurality of holes through which igniter combustion gas is emitted.