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Briefs Electronics & Computers
Asymmetric Core Computing for High-Performance Applications
High-performance computing (HPC) users have traditionally relied upon two things to supply them with processing power: speed of the central processing units (CPUs) and the scalability of the system. There are problems with this approach. Physical limitations are curtailing clock speed...
Briefs Materials
Templated Synthesis of Aluminum Nanoparticles for Stable Energetic Materials
Reactive nanoparticles as energetic materials have received much recent attention for a variety of existing and/or potential applications. Among more extensively...
Briefs Physical Sciences
Performance and Operability of a Dual-Cavity Flame Holder in a Supersonic Combustor
Supersonic combustion has been of interest for many years in order to support future Air Force hypersonic missions. The current generation of hydrocarbon-fueled...
Briefs Physical Sciences
Gesture-Directed Sensor-Information Fusion Gloves
Current chemical-protection gear for warfighters on the ground inhibits electronic communication via keyboards, cell phones, and remote-control devices. To improve communications capabilities...
Briefs Physical Sciences
GigE Advanced Imaging Sensor
The Wide-Field Dynamic Range (WFDR) camera is a high-sensitivity, wide-field-of-regard sensor of importance to future military surveillance and survivability systems. It is intended to be used in harsh, noisy...
Briefs Information Technology
Channel Modeling for a Wireless Transmission System
A wireless transmission system provides high-quality video transmission over severely impaired wireless links between nodes that are connected within airborne networks. The target bit rate for...
Briefs Mechanical & Fluid Systems
Eccentric Mounting and Adjustment System for Belt-Driven Devices
This design relates to an eccentric mounting and adjustment (EMA) system for belt driving, or for belt-driven devices, that is installed and operated within the restricted confines of an engine compartment, typically a motor vehicle. It satisfies two essential requirements for...
Briefs Mechanical & Fluid Systems
Lightcraft Propulsion for Launching a Small Satellite
A study of lightcraft propulsion systems in general has led to the conception and analysis of such a system for launching a small (having a mass no more than a few kilograms) satellite into...
Briefs Materials
Nanodomain Model of Polymer-Derived Ceramics
Areport discusses a model developed to explain the unusual properties of polymer- derived ceramics (PDCs), which are so named because they are made by controlled pyrolysis of cross-linked polymers. PDCs are metastable ceramics that have potential to be further developed into high-temperature materials...
Briefs Materials
Performance Evaluation of Commercial Carbon Monofluoride Materials in Lithium Batteries
The performance of six different commercially available carbon monofluoride (CFx) materials was evaluated at four different discharge rates. The physical...
Briefs Physical Sciences
Modular, Portable, and Reconfigurable Wireless Sensing System
A modular, portable, reconfigurable wireless sensor system monitors and records environmental conditions in an aircraft cabin. By designing a sensor system that can be easily...
Briefs Physical Sciences
Indoor Navigation for Unmanned Aerial Vehicles
This research proposed the use of inexpensive, lightweight range sensors for indoor unmanned aerial vehicle (UAV) navigation. Two potential range sensors were tested for suitability and error...
Briefs Electronics & Computers
Silicon Carbide Junction Field-Effect Transistor Devices for Scalable Solid-State Circuit Breakers
Power electronic converters functioning as components in high-power systems, such as those of hybrid military ground vehicles, require fast fault...
Briefs Electronics & Computers
Effects of Differing Carbon Nanotube Field-Effect Transistor Architectures
Understanding the differing methods and materials that can be used for producing carbon nanotube (CNT)- based electronic components means an informed use of materials...
Briefs Electronics & Computers
Low-Power Circuit for an Electromagnetic Warning System Sensor
Low-power sensors are important to the Army for monitoring infrastructure of the lifecycle of an operation. Isotope batteries can power and operate compact, low-power sensors for...
Briefs Physical Sciences
Power for Micro Autonomous Systems
The Micro Autonomous Systems and Technology (MAST) Collaborative Technology Alliance (CTA) has been initiated to spur basic research in small autonomous robots, particularly in four main areas: Microsystem...
Briefs Electronics & Computers
High Assurance Virtualization Engine (HAVEN)
Virtualization technology has been around since the late 1960s. Initially, it was conceived to maximize utilization of expensive hardware by running multiple instances of an operating system (OS)...
Briefs Materials
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...
Briefs Materials
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...
Briefs Materials
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...
Briefs Materials
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...
Briefs Electronics & Computers
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...
Briefs Electronics & Computers
Memory-Based, Structured, Application-Specific Integrated Circuit (ASIC)
For air, space, and ground-based systems, there is a clear need for high-performance, lightweight, low-power, highly reliable computing on data-intensive applications. A...
Briefs Weapons Systems
Solid-State, High-Energy Lasers Based on Rare-Earth Doped Gallium Nitride
Laser-based directed-energy weapons (DEW) are important components for future Army missile defense systems. The diode-pumped, rare-earth (RE)-doped, solid-state laser is a very promising path towards achieving a DEW-sufficient level of average power from a reasonably compact...
Briefs Photonics/Optics
Analysis of Analog Photonic Links Employing Multiple-Channel (Arrayed) Receivers
Analog optical links are finding increased application in commercial and military systems ranging from radio-over-fiber applications, antenna remoting, and optical...
Briefs Photonics/Optics
Photonic Recirculating Delay Line for Analog-to-Digital Conversion
Aconventional analog fiber-optic link can be augmented with a recirculating optical delay loop so as to realize an optically assisted analogto- digital converter (ADC) that...
Briefs Photonics/Optics
Design and Development of a Package for a Diluted Waveguide Electro-Absorption Modulator
Externally coupled electroabsorption modulators (EAMs) are commonly used in order to transmit RF signals on optical fibers. Recently, an alternative device...
Briefs Mechanical & Fluid Systems
Developing Fleets of Autonomous Underwater Vehicles
Autonomous underwater vehicles (AUVs) have a demonstrated capability to collect valuable data for scientific and military purposes. Historically, individual vehicles have been used. To reduce the overall time and cost of acquiring data over large areas, multiple vehicles must be used. A fleet of...
Briefs Mechanical & Fluid Systems
Stability Analysis of Distributed Engine Control Systems
Full Authority Digital Engine Control (FADEC), based on a centralized architecture framework, is being widely used for gas turbine engine control. However, current FADEC is not able to...
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