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Briefs Physical Sciences
Portable, Rapid-Test Fuel Tank Leak Detection System
In 1988, the EPA issued Underground Storage Tank (UST) regulations for fuel storage in order to implement monthly monitoring and annual tightness testing. Monthly monitoring requires that the...
Briefs Information Technology
Ballistic Filter for GPS and Accelerometer Measurements
Ballistic filtering describes the dynamic equations that can be used to form Extended Kalman Filters (EKF) for the estimation of a projectile’s trajectory. The steps associated with initialization and implementing an EKF are demonstrated through a specific task. The performance of an EKF...
Briefs Electronics & Computers
Procedure to Determine and Correct for Transmission Line Resistances for Direct-Current, On-Wafer Measurements
Resistances of tenths of ohms to several ohms in transmission lines have been measured in laboratory systems from the power supply to...
Briefs Electronics & Computers
Channel Field Effect Transistors
Narrow bandgap semiconductors offer high carrier mobilities and low contact resistances, while wide bandgap semiconductors offer high breakdown voltages. A series of heterojunction transistors has been investigated and proved to be effective for improving both speed and power output. These devices include double...
Briefs Electronics & Computers
Self-Aware Computing
This project performed an initial exploration of a new concept for computer system design called Self-Aware Computing. A self-aware computer leverages a variety of hardware and software techniques to automatically adapt and...
Briefs Photonics/Optics
Computational Photonics in Laser Communications Through Clouds
This work explored the concept of creating a partially coherent laser beam consisting of an array of spatially overlapping or separated Gaussian beams with possible individual...
Briefs Materials
Fire Resistance of Geopolymer Concretes
Geopolymer concrete has been proposed as an alternative to Portland cement concrete in applications requiring high degrees of fire resistance, because the intrinsic chemistry of the geopolymer binder does...
Briefs Materials
Tomographic Electrical Resistance-Based Damage Sensing in Nano-Engineered Composite Structures
Advanced composite materials are increasingly replacing metals in the aerospace industry as they offer weight-saving improvements such as high...
Briefs Photonics/Optics
Uncooled Tunable LWIR Microbolometers
Uncooled infrared detectors have significant potential capabilities that have been little explored. Micro-machined uncooled detectors with tunable spectral characteristics across the long-wave infrared...
Briefs Physical Sciences
Fluid Helmet Liner for Protection Against Blast-Induced Traumatic Brain Injury
An Advanced Combat Helmet liner design uses the novel idea of including filler materials inside channels in the liner. An energy-absorbing foam was selected for the main liner structure, and several filler material candidates of widely varying properties are being...
Briefs Physical Sciences
Performance of Steel Stud Walls Subjected to Blast Loads
Construction trends have brought about an increase in the use of cold-formed steel studs in Air Force facilities. These steel stud walls have significant potential for mitigating large...
Products
Key-Locking Studs
Acme Industrial Co., a division of Jergens (Carpentersville, IL), has introduced a line of key-locked fasteners for aerospace, military, and electronics use with a one-piece design to provide high pull-out strength and...
Products
Pressure Transmitters
American Sensor Technologies (Mt. Olive, NJ) offers the AST2000 and AST20HA pressure transmitters for military and aerospace applications such as trucks, unmanned vehicles, transmissions, hydraulic pumps, fuel monitoring,...
Products
Linear Position Sensors
The HSTAR 750 Series hermetically sealed position sensors from Macro Sensors (Pennsauken, NJ) are high-temperature, rugged LVDT sensors for use in military and defense applications such as fuel/oil level monitoring, load...
Products
Retaining Rings
Rotor Clip (Somerset, NJ) provides manufacturing and processing of retaining rings to military specifications under Cage Code 07382. Stainless steel parts for military applications are made from PH15-7 stainless material. MS parts made from high carbon spring steel are also available. Finishes include cadmium, zinc dichromate, and...
Products
Rugged Notebook Computer
GammaTech Computer Corp. (Fremont, CA) offers the D14RM rugged notebook tested using the military 810G specification for protection against drop, shock, spill, and dust. It is protected by a magnesium alloy case....
Products
Laser Glass
SCHOTT North America (Arlington, VA) offers LG-910 eye-safe laser glass products for operation at 1.5 μm, including rods, slabs, and discs with high-laser-damage-threshold dielectric coatings. Applications include ranging and targeting on handheld, ground, fixed-wing, and rotary platforms. The glass is an erbium-ytterbium-chromium...
Products
Silicone Adhesive
NuSil Technology (Carpenteria, CA) has introduced SCV-2586 Ultra Low Outgassing™ silicone adhesive for applications requiring thermal stability and a broad operating temperature range in aerospace, aircraft, and electronics...
Products
Radionuclide Detection System
The ORTEC Products Group of AMETEK Advanced Measurement Technology (Oak Ridge, TN) has introduced the ORTEC Detective Mobile, a mobile radionuclide search system that incorporates high-purity germanium detectors...
Products
Surfacing Film
Park Electrochemical Corp. (Melville, NY) offers Aeroglide™ surfacing film for aircraft composite parts fabrication. The film is designed to improve the surface finish of aircraft composite parts, and reduce or eliminate secondary surface finishing operations prior to painting. The film is compatible with most epoxy prepregs, and...
Products
Disconnect Switch
The SureStart™ Low-Voltage Disconnect (LVD) Switch 48513 from Cole Hersee (South Boston, MA) electronically senses battery voltage and conserves starting power by disconnecting non-critical loads, prolonging battery life by...
Products
Backplane Connector
Tyco Electronics (Harrisburg, PA) offers the FORTIS ZD high-speed backplane connector for military and aerospace applications that require shock and vibration protection. The connector combines a high-speed contact leadframe...
Products
AC-to-DC Converter
C Systems (Setauket, NY) offers the BC-751, an 800W AC-to-DC converter with eight outputs to provide power for solid-state RF amplifiers in airborne Identification Friend or Foe (IFF) applications. The converter accepts a...
Products
Absorptive Polarizers
Moxtek (Orem, UT) offers absorptive wire-grid polarizers for the blue, green, and red channels. The polarizers are designed for narrow-band applications and where back reflection is a concern. They are designed to transmit the p-polarization and absorb the s-polarization of incident light, rather than reflecting the unwanted...
Products
Rugged Power Converter
Schaefer (Ashland, MA) offers a rugged power converter designed for subsea mineral exploration or other deep-sea application. The design features industrial-grade components and provides up to 110W of power with an...
Products
Toolholders
REGO-FIX® (Indianapolis, IN) has introduced Xtended Length (XL) toolholders for aerospace applications. The toolholders provide an extended reach up to 14" and are available in the ER and powRgrip® lines. The toolholder line...
Articles Energy
Alternative Energy and Propulsion Power for Today's U.S. Military
The U.S. military has the most sophisticated weapons systems in the world, but they are fueled and mechanically powered by old technologies. Given the mission of the U.S....
Tech Transfer Reports
Miniaturized Rad-Hard System Shrinks Propulsion Electronics
Developed by Space Micro (San Diego, CA), a new technology involves the miniaturization and radiation hardening of electronics through a novel means of stacking...
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