摘要:
Described are energetic compositions formed of a 5,5′-bistetrazole salt and a perchlorate salt, in which the energetic composition is a co-precipitated product. The 5,5′-bistetrazole salt and the perchlorate salt can be dipotassium 5,5′-bistetrazole and potassium perchlorate. The energetic composition can have a particle size distribution between 1-50 micron and/or a mean volume diameter of less than 30 micron. In a low energy electro-explosive device, an ignition element is at least partially surrounded by an acceptor formed of this energetic composition, and the ignition element can be a bridgewire, a thin film bridge, a semiconductor bridge, or a reactive semiconductor bridge.
摘要:
Described are methods of preparing silver azide comprising reacting a silver salt, an azide salt, ammonium hydroxide, and a hydrolysable ester at an elevated temperature.
摘要:
A self contained fire extinguisher system that does not need external power in order to sense or initiate a release of a fire suppression medium, includes components configured to utilize a linear sensor network that can be connected to at least one and/or different sources of fire suppression mediums. A linear temperature sensing cord can be routed over a large area not practical with individual sensors. The cord can also actuate several and different sources of fire suppression mediums to maximize the suppression of a fire.
摘要:
An apparatus to be positioned at the side of a roadway for ensnaring tires of an oncoming land vehicle is described. The apparatus comprises a plurality of segments flexibly attached end-to-end. At least a subset of the segments further comprise a spike ramp. The segments are connected at the ends via hinges. The segments are adapted to house a net package in a stowed-away configuration. The net package includes a set of spikes tethered to netting. A deployment hose is connected to a subset of the segments to cause the segments to become unstacked for deployment when the deployment hose is inflated.
摘要:
An apparatus may be positioned at the side of a roadway for ensnaring tires of an oncoming land vehicle. The apparatus comprises a base layer further comprising a plurality of receptacles to hold spikes at both lengthwise edges of the base layer. The base layer is adapted to support a net package in a rolled stowed configuration. The net package includes a set of spikes tethered to netting. A deployment hose is connected to the base layer to cause the base layer to become unrolled for deployment when the deployment hose is inflated.
摘要:
A control system for a satellite comprises a power source and control system, a propulsion system having individually selectable solid fuel motors, a communication interface and an attitude determination and control system (ADCS). The ADCS receives power from the power source and control system and further receives desired orbital or positional instructions via the communication interface. Based on the desired orbital or position instructions, the ADCS generates and provides commands to the propulsion system. In turn, the propulsion system selects and fires one or more motors of the individually selectable solid fuel motors responsive to the commands received from the ADCS. A satellite may comprise the disclosed satellite control system as well as attitude control components and/or sensor components operatively connected to the satellite control system.
摘要:
Described are methods for preparing salts of 5-nitrotetrazolate that include reacting aqueous solutions of 5-aminotetrazole, an acid, and sodium nitrite in a continuous flow system at an elevated temperature.
摘要:
A self contained fire extinguisher system that does not need external power in order to sense or initiate a release of a fire suppression medium, includes components configured to utilize a linear sensor network that can be connected to at least one and/or different sources of fire suppression mediums. A linear temperature sensing cord can be routed over a large area not practical with individual sensors. The cord can also actuate several and different sources of fire suppression mediums to maximize the suppression of a fire.
摘要:
Described are methods for preparing salts of 5-nitrotetrazolate by reacting 5-aminotetrazole, an acid, and sodium nitrite in water in a batch reaction at an elevated temperature. As examples, the acid is nitric acid, sulfuric acid, perchloric acid, or hydrochloric acid, and the elevated temperature is at or above 65° C.
摘要:
An apparatus and a method for disabling a ground engaging traction device of a land vehicle includes at least one penetrator configured to breach the traction device, an articulated strap configured to move the apparatus between a retracted arrangement and an extended arrangement, a mass configured to deploy the apparatus to the extended arrangement, and a retractor configured to retract the apparatus to the retracted arrangement. The penetrators can be arranged in sections and the penetrators can be arranged so as to be multi-directional within each section.