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Wheel Force Transducer

Aconcept wheel force transducer has been developed that can measure the forces and moments between a tire and a road on a High Mobility Multi-purpose Wheeled Vehicle (HMMWV or Humvee) driven under off-road conditions. The proposed wheel force transducer is an important step in correcting the gap in current tire testing and modeling knowledge to ensure that future off-road vehicle models and simulation efforts are conducted with confidence. In order to obtain tire characteristics over off-road terrain, cost-effective field test equipment was required.

Posted in: Briefs, Mechanical Components, Tires and traction, Wheels, Test equipment and instrumentation, Off-highway vehicles and equipment
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Testbed for Reconfigurable Network Security Research and Experimentation

A novel, reconfigurable network testbed has been developed, suitable for the implementation, testing, and analysis of new and existing network-based defenses against various information attacks. The system is based on a cluster of reconfigurable networking nodes that can be configured to emulate an arbitrary network infrastructure.

Posted in: Briefs, Electronics & Computers, Analysis methodologies, Cyber security, Test procedures
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Architectures for Cognitive Systems

A need exists for small, autonomic systems in the battlefield. Autonomy allows the creation of unmanned systems to perform complex, high-risk, and/or covert operations in the battlefield without the need for constant human operation. Current computing systems are not optimized to perform intelligent operations such as environmental awareness, learning, and autonomic decisions in a size, weight, and power form factor that matches platforms envisioned for future use.

Posted in: Briefs, Electronics & Computers, Architecture, Autonomous vehicles, Military vehicles and equipment
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Circuit-Switched Memory Access in Photonic Interconnection Networks for High-Performance Embedded Computing

High-performance embedded systems, such as those found in aerial surveillance platforms and handheld devices used by the military, are of key importance. These systems are characterized by stringent power budgets and the need for extremely fast, streaming access to memory. While general-purpose processors offer a customizable solution, they typically do not meet the power and performance requirements for the systems in question. For this reason, specialized chip multiprocessors (CMPs) are used.

Posted in: Briefs, Electronics & Computers, Embedded software, Surveillance, Military vehicles and equipment
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Analysis of Voltage and Current Signal Processing in a Li-ion Battery Management System

A Battery Management System (BMS) manages Li-ion batteries in a storage system for pulsed power weapons aboard Naval vessels. The system charges the batteries with a buck converter according to the Constant Current Constant Voltage method. The BMS uses analog equipment to measure signals and then digitally converts signals for transmittal to a Field Programmable Gate Array (FPGA).

Posted in: Briefs, Electronics & Computers, Analysis methodologies, Lithium-ion batteries, Marine vehicles and equipment, Military vehicles and equipment
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Quasicrystalline Aircraft Coating Shows Promise for Cookware, Prosthetics

A technology initially designed to lubricate aircraft parts could lead to more durable nonstick cookware and prosthetic bone-repair implants.

Posted in: Tech Transfer Reports, Coatings & Adhesives
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Thin Film Fixes Flaws in Thermal Battery Igniters

Unlike alkaline batteries used in common consumer electronic items, thermal batteries are inert, solid-state devices that do not rely on liquid electrolytes, which can corrode or leak from their casings over time. Long shelf life and reliability make thermal batteries the most common device to power missile navigation and control systems.

Posted in: Tech Transfer Reports, Energy Storage
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14-Bit Analog-to-Digital Converter

The 14-bit ADS4149 from Texas Instruments (Dallas, TX) is a high-speed analog-to-digital converter (ADC) that delivers low power consumption and performance across wide signal bandwidths from DC up to 550 MHz. It features a maximum sample rate of 250 mega-samples per second (MSPS) and consumes as little as 275mW per channel at that rate, while offering 72.5-dB SNR at 100-MHz input frequency. Dynamic power scaling reduces power consumption to 215mW at 160 MSPS.

Posted in: Products, Products, Electronics & Computers
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Chassis Mount Power Supplies

XP Power (Sunnyvale, CA) has announced the VCS series of chassis mount single output AC-DC power supplies aimed at cost sensitive industrial applications. The series comprises 50W, 70W and 100W models and are available with +5, +12, +15, +24 or +48 VDC outputs. A user accessible voltage trim control provides a +/- 10% adjustment of the output voltage allowing for the use of non-standard voltages or to compensate for cable losses. The VCS series accommodates the full universal input range from 90 — 264 VAC without derating, and can provide full output power from -10 degrees C to +50 degrees C without derating, and with derating to +70 degrees C. Start-up is from -20 degrees C.

Posted in: Products, Products, Electronics & Computers
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SDRAM Multi-Chip Modules

Aeroflex Colorado Springs (Colorado Springs, CO) announced the addition of two SDRAM members to its Quantified Commercial off the Shelf (QCOTS) memory family: the 2.5G and 3.0Gbit SDRAM multi-chip-modules (MCM), organized 64M × 40 (UT8SDMQ64M40) and 64M × 48 (UT8SDMQ64M48) respectively. They offer low power consumption at 3.3V and fast access time (133 MHz) with performance guaranteed via a Standard Microcircuit Drawing (SMD). Both products are assured to withstand 100 krad(Si) and are single event latchup immune (SEL) to 111 MeV-cm2/mg. They are offered in a 128-lead flatpack and Q and Q+ qualified.

Posted in: Products, Products, Electronics & Computers
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