A glass-metal feedthrough consists of an external conductor, a glass material and an internal conductor. The internal conductor has a coefficient of expansion .sub.internal, the glass material has a coefficient of expansion .sub.glass, and the external conductor has a coefficient of expansion .sub.external. The coefficient of expansion of the internal conductor .sub.internal is greater than the coefficient of expansion of the glass material .sub.glass and the coefficient of expansion of the external conductor .sub.external is at least 2 ppm/K, such as at least 4 ppm/K, greater than the coefficient of expansion of the glass material .sub.glass in the temperature range of 20 C. to the glass transformation temperature.

A sacrificial outer sleeve of a self-eroding single-use gas-turbine-engine igniter contains a main pyrotechnic composition and an initiator embedded therein proximate to a distal portion of the sacrificial outer sleeve. The sacrificial outer sleeve extends within a combustion chamber of the gas-turbine engine when operatively coupled thereto so as to provide for igniting a fuel/air mixture therein. The sacrificial outer sleeve is constructed of a material that is consumable either responsive to combustion of the main pyrotechnic composition responsive to activation of the initiator responsive to an actuation signal communicated via an associated signal conduit, or, responsive to a subsequent operation of said gas-turbine engine to which the igniter is operatively coupled, when operatively coupled thereto.

A metallic case for a pyrotechnical igniter of a gas generator for a vehicle safety device that includes a peripheral side wall, a closed end, and a weak zone in the peripheral side wall. The weak zone extends along a continuous trace having a first end portion, a second end portion, and an intermediate portion between the first and second end portions. The first and second end portions of the continuous trace both transition from a first point having a first side wall depth to a second point having a second side wall depth. The second side wall depth is greater than the first side wall depth. The weak zone is configured for opening a vent in the peripheral side wall in response to an increase of pressure within the metallic case.

A system for a molded power charge with secondary pellet at each end. The molded power charge includes a solid outer wall which extends for the length. The solid outer wall has a first end and a second end. The power charge further includes a secondary pellet at each end. The first end and the second end of the outer wall include a secondary pellet with an exposed face. This allows the power charge to be ignited from either end.

A system for a molded power charge with secondary pellet at each end. The molded power charge includes a solid outer wall which extends for the length. The solid outer wall has a first end and a second end. The power charge further includes a secondary pellet at each end. The first end and the second end of the outer wall include a secondary pellet with an exposed face. This allows the power charge to be ignited from either end.

An opto-thermal laser detonator uses resonantly absorptive tuned nano-material associated with secondary explosives for optical absorption and initiation by an integral laser diode. The opto-thermal laser detonator includes main explosive material; resonantly absorptive tuned nano-material; secondary explosive material, wherein the resonantly absorptive tuned nano-material and the secondary explosive material are associated to form associated material made of the resonantly absorptive tuned nano-material and the secondary explosive material; and a laser diode operatively connected to the associated material, wherein the laser diode initiates the associated material which in turn initiates the main explosive material.

An opto-thermal laser detonator uses resonantly absorptive tuned nano-material associated with secondary explosives for optical absorption and initiation by an integral laser diode. The opto-thermal laser detonator includes main explosive material; resonantly absorptive tuned nano-material; secondary explosive material, wherein the resonantly absorptive tuned nano-material and the secondary explosive material are associated to form associated material made of the resonantly absorptive tuned nano-material and the secondary explosive material; and a laser diode operatively connected to the associated material, wherein the laser diode initiates the associated material which in turn initiates the main explosive material.

The present invention relates to a platform for testing collisions or near-collision situations between a collision body, in particular a vehicle, and a test object. The platform has a base body, which has a bottom surface and an attachment surface formed opposite to the bottom surface, wherein an attachment device is formed on the attachment surface for attaching the test object. Furthermore, the platform has at least one roller element, which is arranged at the bottom surface, wherein the roller element is configured such that the base body is displaceable along a ground by the roller element. The base body is formed of an elastically deformable material having a thickness of less than 2500 kg/m.sup.3.

An injector can include an ignition device including a partition wall member forming a first space for housing a gunpowder and made from a rigid material to be destroyed by a rise in pressure in the first space in a case that the gunpowder is combusted. The actuator can also include a casing including a base portion being fixed to the actuator body near the ignition device, and being disposed in a space inside the actuator body covering the ignition device. The casing can define a second space between the casing and the partition wall member of the ignition device, and seal, inside the second space, a combustion product generated by combustion of the gunpowder by the ignition device. When pressure inside the second space arises due to combustion of the gunpowder, a portion of the casing can stretch to approach a predetermined end portion of the output piston portion.

An explosive device composed of an explosive annular shaped charge liner having a given configuration; and an initiator configured to detonate said liner according to a selected one of two different jet formation modes.