Home

Panel PC Temperature/Voltage Supervisor

The new Intelligent Thermal And Power Supervisor (ITAPS) from Ocular, Inc. (Dallas, TX) allows the company’s industrial panel PCs to be deployed over the extended temperature range of -20°C to +60°C. ITAPS monitors and manages power and temperature to prevent data corruption, ensuring reliable system operation in extremely harsh conditions.

Posted in: Products, Products, Electronics & Computers
Read More >>

Transceiver Recording and Playback System

The new RTS 2701 from Pentek (Upper Saddle River, NJ) is a complete dual-channel transceiver recording and playback system in a standard 19-inch, rack-mount server chassis that can be placed in a rack or used on a desktop. As a powerful Windows XP workstation, the system allows customers to run their own applications plus a wide range of thirdparty software for signal analysis and post processing.

Posted in: Products, Products, Electronics & Computers
Read More >>

Secure System Virtualization Software

Green Hills Software (Santa Barbara, CA) recently enhanced its Platform for Secure Networking by adding secure virtualization and new reference platforms. The Green Hills approach to system virtualization enables a complete Linux operating system and its applications ecosystem to securely and seamlessly coexist with the performance, reliability-critical, and realtime portions of networking devices — all on a single general purpose microprocessor. System availability is increased by eliminating the possibility for a noncritical application failure or corruption in the Linux environment to compromise the critical real-time packet traffic applications and services running on the INTEGRITY® RTOS.

Posted in: Products, Products, Electronics & Computers
Read More >>

GPU Tools

NVIDIA (Santa Clara, CA) has introduced what it claims is the most powerful and advanced graphics visualization product lineup in the company’s history. Spanning the range from entry-level to standalone visual computing systems, the new series includes:

Posted in: Products, Products, Electronics & Computers
Read More >>

Extended Temperature COTS Filters

LCR Electronics (Norristown, PA) now offers a line of single phase COTS (commercial-off-the-shelf) filters that operates over an extended temperature range of -40°C to +85°C (-40°F to +185°F). The new RoHS-compliant Single Stage F9100 Filters and Double Stage F9200 Filters are ideal for high ambient environments or in applications with limited temperature rise requirements as found in the military, industrial and medical industries.

Posted in: Products, Products, Electronics & Computers
Read More >>

Characterization of High-Temperature Polymer Thin Films for Power Conditioning Capacitors

Wide bandgap semiconductors (e.g., silicon carbide) will enable operation of military systems at temperatures above 150 °C, which eases thermal management. However, such systems cannot be designed efficiently unless capacitors are available that can operate at similarly high temperatures.

Posted in: Briefs, Materials, Capacitors, Heat resistant materials, Polymers, Semiconductors, Military vehicles and equipment
Read More >>

RF Polymer Composites for Electromagnetic Systems

Design of polymer composites with specific engineered electromagnetic properties are of use in a variety of physical electromagnetic systems above 100 MHz. In physical electromagnetic systems such as GPS, radomes, WiFi, etc., proper choice of the material can be transformative in that it can yield considerably better performance. Of interest in this work is the possible development of low-loss magneto-dielectric composites. This project investigates various aspects of material systems, starting with possible composite designs, to design of measurement techniques, to development of finite element models for complex waveguide and conformal antenna configurations that use these materials.

Posted in: Briefs, Materials, Finite element analysis, Antennas, Waveguides, Composite materials, Materials identification, Polymers
Read More >>

Modeling Defects in Transparent Ceramics to Improve Military Armor

The dominant materials solution used for ballistic transparency protection of armored tactical platforms in commercial and military applications is low-cost glass backed by polycarbonate. Development of next-generation ceramics is critical to offering enhanced protection capability and extended service performance for future armored windows to the soldier. Among the potential ceramic materials considered for armor — sapphire, edge-form-growth sapphire, magnesium aluminate spinel, aluminium oxynitride — one was selected for the current pursuit: magnesium aluminate spinel (MgAl2O4).

Posted in: Briefs, Materials, Windows and windshields, Failure modes and effects analysis, Ceramics, Occupant protection, Military vehicles and equipment
Read More >>

Validation of Hazardous Air Pollutant (HAP)-Free Torque Seal Inspection Lacquer

The Army uses numerous adhesives and sealants, among other coating materials, that contain significant amounts of hazardous air pollutants (HAPs). This work examines laboratory and field demonstration/validation of one sealant, Torque Seal. A HAP-free alternative to Torque Seal containing ethanol as the carrier solvent has been identified. Laboratory testing including adhesion, resistance to fluids, resistance to humidity, and drying time validated that the HAP-free sealant performs very similarly to the baseline Torque Seal containing methanol (HAP). Furthermore, a demonstration study at Fort Rucker, AL, using a UH-1 helicopter rotor, shows that the HAP-free sealant performed as well as the Torque Seal.

Posted in: Briefs, Materials, Air pollution, Adhesives and sealants, Performance tests, Test procedures, Military aircraft, Military vehicles and equipment
Read More >>

Wireless Network Cocast: Location-Aware Cooperative Communications with Linear Network Coding

In wireless networks, reducing aggregate transmit power and having even power distribution increase the network lifetime. The conventional direct transmission (DTX) scheme results in high aggregate transmit power and uneven power distribution. In conventional DTX, where mobile units directly transmit their information to a common destination, the distant mobile units require more transmit power to provide a comparable quality of service (QoS) to that of the closer ones. Consequently, high aggregate transmit power (the sum of all transmit power of individual mobile units) and uneven power distribution among the units exist in the network. These two issues result in low network lifetime, which is defined as the time until the first mobile unit dies. It is wellknown that diversity techniques such as time diversity, frequency diversity, and spatial diversity result in reduction of transmit power and thus can be used to improve network lifetime. Three location- aware cooperation-based schemes considered in this work are immediateneighbor cooperation (INC), maximal cooperation (MAX), and wireless network cocast (WNC) that achieve spatial diversity to reduce aggregate transmit power and even power distribution.

Posted in: Briefs, Electronics & Computers
Read More >>