USA As Represented by Secretary of the Navy

William Steven Jones

John D Horton

James Edwin Rumbough

Felipe A Garcia

Kerry L Wagaman

Robert C Woodall, Jr

Steven L Collignon

Chester F Clark

David S Vickers

Robert P Richter

Carmen M Ferrer

Christopher C Wilmot

Holly Santoli

John Auzins

A sound mitigation system and method reduce the transmission of acoustic output from explosions underwater. The system is submerged to bottom terrain of a body of water and has at a series of gas-generating devices providing volumes of gas that are fed to refractory heat resistant tubing assemblies and flexible general tubing assemblies. The heat resistant and general tubing assemblies extend between adjacent gas generating devices and are provided with at least one row of holes to vent bubbles of gas and form a virtually continuous curtain of bubbles rising to the surface of the water between detonating explosives and areas of interest. The curtain of bubbles mitigates the effects of the explosions on marine mammals and endangered, threatened, or protected species within an area adjacent to the explosions.

Underwater sound mitigation system for explosive testing

An apparatus for and method of laying a minefield in open water uses a high speed air-cushion vehicle that transports substantial quantities of mines to a target area. It then deploys the mines while it is rapidly moving, d marks and records the location of each deployed mine with GPS equipment. Mines can be emplaced at speeds and rates much greater than conventional surface ships. The speed of high speed aircushion vehicle makes it less vulnerable to attack during operations, and it is less vulnerable to other mines it may encounter during a mission. The GPS on high speed air-cushion vehicle ensures an accurate and detailed record of location of the minefield. The high speed air-cushion vehicle has much greater lift capability than aircraft used in mining missions, and, therefore, can deliver a much larger payload per sortie (under all weather conditions) while creating the minefield. Mines can be emplaced much more accurately than an aircraft dropping them from altitude, (at least 100% increase in delivery precision). The high speed air-cushion vehicle running at normal operating speeds, has a low detectable signature and, due to its speed, is invulnerable to certain enemy mine functions. The unexpected benefit is accurate mining of enemy minefields, or areas beyond enemy minefields, for various expeditionary uses.

Air-cushion and accurate mine laying and mapping system

A platform, breakwater, or endless track includes an array of molded cells nterconnected by a system of elongate flexible members, such as wire ropes or lines. The molded cells are cast in molds located at overlapping portions of the cables. The molds may be flexible nylon bags having openings for receiving the cables through them and a fill port to receive material. The molds may be retained on cast cells or removed and reused. A buoyant material, such as expanding self-hardening foam is pumped from foam mixing and pumping equipment into the molds to cast the cells for floating on water, although negatively buoyant cells could be cast for some applications. The cells may be cast on site or elsewhere and then transported to the work site. The cables either can be secured or free running in the molded cells. Accordingly, flotation cells may be separated by lengths of cables to provide for venting the effects of underwater detonations and for dissipating surface wave energy, or flotation cells may be drawn together to provide a solid work platform or roadway. An endless-track mine clearing structure that is readily repairable may be constructed from the cells and cables. Sections of molded cells and cables can be interconnected to provide differently sized and shaped platforms for various applications.

Flotation seaway

A device for clearing obstructions from surf zones comprising an elongated enerally cylindrical housing having a first end and a second end, the housing encasing a fuse positioned inside of the first end and a compartment containing a gas generating compound positioned inside of the second end, the fuse detonationally attached to the compound and being capable of causing the compound to initiate burn, the compound having a burn time which is capable of producing sufficient amounts of gas capable of rupturing the housing with the burning of the compound. A method for clearing obstruction which provides the device, interring the device within the subsoil proximate to the obstructions, and, detonating the compound wherein a burning of the compound forms sufficient amounts of gas to rupture the housing and sunder subsoil support of the obstructions effective to clear the obstructions also is disclosed.

Surf zone mine clearance

A process for producing high bulk density spheroidal nitroguanidine by fong a solution of from 2 to 9 weight percent of nitroguanidine, 0.5 to 2.0 weight percent of methylcellulose, and 0.5 to 2.0 weight percent of partially hydrolyzed poly(vinyl alcohol) in water at a temperature of from 50.degree. C. to 100.degree. C., and then cooling the solution at a rate of from I to 20.degree. C./minute until the solution temperature is less than 40.degree. C.

Method of producing high bulk density spheroidal nitroguanidine

A method for ocean surface delivery of ordnance and clearing of explosive mines and obstacles from a navigable sea channel includes the step of providing quantities of ordnance adapted to survive impact and prolonged immersion in sea water and to arm in response to release from a mobile ocean surface vehicle and to pressure actuation upon submersion to a desired depth in sea water and then to detonate in response to receiving a preselected signal transmitted to the ordnance from a standoff location. The method also includes the step of delivering the quantities of ordnance from a mobile ocean surface vehicle toward multiple sites in a navigable sea channel containing obstacles and explosive mines therein so as to cause arming of the ordnance followed by impact thereof with the navigable sea channel and submersion and emplacement thereof at the multiple sites in the navigable sea channel. The ocean surface delivery method further includes the step of transmitting the preselected signal to and receiving the preselected signal by the emplaced armed ordnance so as to cause detonation thereof and the simultaneous synergistic destruction of the obstacles and explosive mines contained in the navigable sea channel. The method also includes the step of marking an amphibious path through the cleared navigable sea channel.

Growing community of inventors

Panama City Beach, FL, United States of America

William Steven Jones