摘要:
A projectile for safe standoff destruction of explosive devices. The projectile's casing encloses a chamber containing combustible material located opposite a roughened surface on the chamber. The combustible material is mounted so upon the projectile impacting the explosive device, the combustible material flies onto the roughened surface, heating the material by shear forces and igniting the material. This creates pressure bursting the chamber, injecting combustion gases into the explosive fill within the device, thereby igniting the fill locally at the impact, and along cracks in the fill. This arrangement prevents a coherent detonation wavefront from forming within the fill, and a slower burn of the fill, whereby a rifleman has little chance of receiving a concussive shock, or shrapnel, from the device.
摘要:
An explosive event may be produced by mixing reactive material and water to form a mixture. The reactive material may be mixed with a substantially stoichiometric amount of water needed for complete reaction of the water with the reactive material. After forming the mixture, the mixture may be detonated with opposing shock waves. Shock fronts of the opposing shock waves may coincide to form a mach front or mach stem, which may enhance the explosive effect.
摘要:
An underwater hydro-reactive explosive system includes a pressure vessel with a central section of water disposed between identical sections of a material selected from the group consisting of thermites, intermetallics, nano-sized metallic particles, and micro-sized metallic particles. The water is provided in a stoichiometric quantity that provides a complete reaction with the material following simultaneous detonation of the sections thereof.
摘要:
The invention is an explosively formed projectile (EFP). On detonation of an explosive charge, an explosively formed projectile is formed from two separate metal elements, an open-poled dished liner and a cavitation pin. The open-poled dished liner is made of a metal more dense than a metal of the cavitation pin. The cavitation pin lies on the open-poled dished liner longitudinal axis and in contact therewith. The cavitation pin has a truncated right conical shape with a base diameter to length ratio of 0.7:1 to 1.5:1. The ratio of the open-poled dished liner diameter:cavitation pin fore portion major base diameter is 2:1 to 4:1. Upon detonation, the cavitation pin leads the explosively forged liner in the explosively formed projectile assembly. The leading pin causes cavitation in water resulting in an increase in the velocity of the explosively formed projectile.
摘要:
A reaction container has contains an amount of a water reactive material and a volume of water within the confined space of its interior. The water reactive material, which contains aluminum, is formed as two separate and spaced apart portions. The water is located between the two portions of the water reactive material. A detonation mechanism, which is configured to mix the amount of water reactive material and the volume of water, is provided in communication with each portion of the water reactive material. The volume of water and the aluminum in the water reactive material are stoichiometrically balanced.
摘要:
An extensible torpedo has a body, a cavity within the body and a water reactive material in communication with the cavity. A mechanism selectively positions the cavity between a first volume and a second volume and also selectively positions the torpedo between a first length and a second length. The second volume and length are greater than the first volume and length. The mechanism introduces ambient water into the cavity in a volume that represents a stoichiometric balance with the amount of water reactive material.
摘要:
An incendiary grenade's casing has a fuze with a portion extending into the casing. Thermite disposed in the casing encases the portion of the fuze that extends into the grenade casing. Insulating material is disposed in the casing adjacent to the thermite. Layers of a titanium-boron intermetallic and an oxidizer are disposed in the casing. One layer of the titanium-boron intermetallic is adjacent to the layer of insulating material. This one layer of the titanium-boron intermetallic and a layer of the oxidizer adjacent thereto have a common-axis hole formed therethrough that is aligned with the portion of the fuze. A separating material is disposed at each interface between the titanium-boron intermetallic and the oxidizer.
摘要:
The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue, including treatment using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using, for example, microwave energy.
摘要:
The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using microwave energy.
摘要:
Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.