USA As Represented by Secretary of the Navy

Nova Research, Inc.

Other

Med-eng, LLC

Graham K Hubler

Yan R Kucherov

Robert Furstenberg

James S Horwitz

Chris Kendziora

Michael Papantonakis

R Andrew McGill

Brant G Johnson

Robert Andrew McGill

Brian H Houston

Thomas L Carroll

Robert D Corsaro

Doug Wong

Jeffrey Levine

Jean-Philippe Dionne

Kirth E Simmonds

Lock-Sui Chin

Peter Matic

Daniel Crossman

Peter Herdic

James A Sprague

Deborah Van Vechten

Alain Berdoz

Jeffrey Byers

Nevin Rupert

Phil Frank

Richard Steven Bruno

Jason Kost

Kenny Opachko

Edward P Donovan

Philip R Malmberg

Theoren P Smith, Iii

A composite armor plate includes a fracture layer placed adjacent to a ceramic layer. The ceramic layer provides a ballistic resistant layer that receives a ballistic impact and propagates a compression wave. The fracture layer is placed behind the ceramic layer and absorbs a portion of the compression wave propagating out in front of the ballistic impact. The absorbed compression wave causes the fracture layer to at least partially disintegrate into fine particles, which dissipates energy in the process. To cause a higher degree of fracturing (and thus larger dissipation of compression wave energy) the fracture layer includes a plurality of resonators embedded in a fracture material.

Armor plate with shock wave absorbing properties

A heat dissipation system that includes a structure having a surface with a cavity recessed on the surface. A wing or channel causes a vortex to occur in the cavity. Destabilizers, such as projections or recesses are disposed on the sidewall of the cavity to disrupt the local surface boundary layer that forms in the cavity. Alternatively, a plurality of freely moving bead elements are disposed in the cavity to disrupt the local surface boundary layer. A cover can be included that prevents the bead elements from exiting the cavity.

Heat dissipation system with surface located cavities for boundary layer disruption

Heat dissipation system with boundary layer disruption

An apparatus as provided for measuring acceleration of a person's head or other object. The apparatus comprises a sensor for sensing acceleration and a controller for controlling recording of data resulting from the sensed acceleration due to an explosive force. The controller is adapted to determine whether or not to enable recording of the data based on the sensed acceleration. A data receiver is provided to receive the sensed acceleration data from the sensing means, and requires electrical power to enable data to be received thereby. The controller controls electrical power to the receiver so that if the sensed acceleration reaches or exceeds a predetermined value, electrical power to the data receiver is enabled. The recorded acceleration data may be used for injury analysis.

Method and apparatus for measuring data for injury analysis

A system for reducing the effects of a blast wave includes armor plating configured to face a supersonic blast wave. The armor plating has a surface consisting of alternating tall and short peaks with valleys between the peaks. The peaks and valleys are positioned such that the supersonic blast wave reflects from the side surfaces of the tall peaks as a regular reflection that at least partially suppresses Mach reflection of the supersonic wave caused by the short peaks and the valleys. The surface may also be designed to not trap reflected waves. The valleys can be parabolic shaped to deflect and/or dissipate transonic flow that follows the blast wave front.

Blast wave effects reduction system

A method for non-contact analyte detection by selectively exciting one or more analytes of interest using an IR source optionally operated to produce pulses of light and tuned to at least one specific absorption band without significantly decomposing organic analytes and determining if the analyte is present by comparing emitted photons with an IR detector signal collected one or more times before, during, or after, exciting the analyte. Another embodiment of the present invention provides a method for non-contact analyte detection by selectively exciting analytes of interest using one or more IR sources that are optionally operated to produce pulses of light and tuned to at least one specific wavelength without significantly decomposing organic analytes, wherein the analyte is excited sufficiently to increase the amount of analyte in the gas phase, and wherein the content of the gas is examined to detect the presence of the analyte.

Analyte detection with infrared light

The present invention is directed to a method for non-contact or stand off chemical detection by selectively exciting one or more analytes of interest using an IR source tuned to at least one specific absorption band without significantly decomposing the analyte and determining if the analyte is present by comparing emitted photons with an IR detector signal made before and during or shortly after exciting the analyte. Another embodiment provides a method for non-contact or stand off chemical detection by selectively exciting one or more analytes of interest using an IR source tuned to at least one specific absorption band without significantly decomposing the analyte, wherein the analyte is excited sufficiently to generate a vapor plume, and wherein the plume is examined to detect the presence of the analyte. Additionally, the present invention provides for a system for non-contact or stand off chemical detection.

Detection of chemicals with infrared light

An armor plate transforms projectile energy into solid-state lattice waves and facilitates absorption of these waves at different wavelengths. For high frequency lattice waves, dopants are used for absorbing the lattice waves and converting them to thermal energy. Heavy dopants and layered materials can also be use for reflecting lattice waves to facilitate attenuation through absorption. A spreading layer can also be used for dispersing non-absorbed lattice waves.

Armor plate

A system and method is provided for estimating a trajectory of an incoming bullet based on the acoustics of the shock wave created as the bullet travels through the air. A first auditory signal representing a direct sound from the shock wave is recorded and its azimuthal direction is determined. Based on this azimuthal direction and other assumptions two possible bullet directions that can cause that shock wave are estimated. A second auditory signal representing a reflection of the shock wave as it travels through the air also is recorded and its azimuthal direction determined. The azimuthal direction of the ground reflection will lie between the azimuthal direction of the first auditory signal and the more correct of the two estimated trajectories, and thus can resolve the ambiguity in the estimated direction of the bullet source.

Direction finder for incoming gunfire

Body armor for ballistic protection of a user's extremities preferably comprising right and left arm protection units and/or right and left leg protection units. The units include a ballistic protection material which preferably covers most of the user's upper arm, elbow region, lower arm, shoulder, upper leg, knee region, and lower leg except for ventilation zones preferably located on the inner portion of the upper arm and the inner part of the upper leg. The back of the knee is preferably covered by a protective flap.

Extremity armor

An apparatus and method for producing films of silicon nitride whose index of refraction varies continuously with film depth by preselected amounts between n=3.9 and n=1.99. This is done by producing an amorphous film of silicon nitride, Si.sub.1-x N.sub.x, of pre-selected stoichiometry between x=0 and x=0.57. In a vacuum-chamber, a target substrate is exposed to vaporized silicon while being simultaneously bombarded with an ion beam of relatively high kinetic energy, ionized, nitrogen particles. The nitrogen embeds in the silicon film deposited on the substrate to form amorphous silicon nitride, the stoichiometry of which depends on the intensity of the ion beam. Instruments measure during the deposition the relative rate of arrival at the target for silicon and nitrogen, and, with pre-generated calibration data for the apparatus, enable an operator to selectively control the film's stoichiometry by controlling the ion beam's intensity response to the measured rate of silicon deposition.

Method for producing substoichiometric silicon nitride of preselected

A single or multilayer optical interference filter and method of forming filter by ion implantation. One or more layers of nitrogen ions are implanted into a single crystal silicon with the crystal at a temperature of from about 600.degree. C. to about 1000.degree. C. The implanted ions create a buried layer(s) of silicon nitride (Si.sub.3 N.sub.4) whose refractive index is substantially different from that of silicon (Si) such that appreciable multiple reflection of incident light occurs between the buried layer(s) and the front surface. The resulting interference maxima and minima in transmitted or reflected light which occur at well-defined positions in wavelength may be controlled both in amplitude and wavelength position. The ions may be implanted in layers at different depths to produce a 'thin film' interference filter.

Ion-implanted multilayer optical interference filter

Growing community of inventors

Highland, MD, United States of America

Graham K Hubler