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Designing Thermal Management Systems for Smaller, Lighter Avionics

The avionics systems of military aircraft support maneuverability and situation awareness for the pilot, process essential images, operate sensors, record data, and provide for broadcast and communication between home base and wingman. The newest generation of military aircraft cannot be flown without avionics, and modern combat is making the leap to electronic warfare.

Posted in: Articles, Aerospace, Avionics, Thermal management, Military aircraft
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Using RF Technology to Form a Wireless Network Under Water

Consumers have shown that they are eager to be rid of cabling and wires connecting them to devices situated or worn near or on the body. From athletic monitoring devices to headphones, and computer mice to cellphone hands-free kits, manufacturers have met a demand for connectivity without wires through the application of short-range RF technology.

Posted in: Articles, RFM Catchall, Aerospace, Radio equipment, Wireless communication systems, Water, Marine vehicles and equipment
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Oil Pipeline Fault Detection System Determines Material Permittivity at Microwave Frequencies

Researching fault location techniques for the oil industry requires data on the complex permittivity of the polyamide Rilsan at microwave frequencies. Rilsan is a vital material used in oil pipe construction. Currently there is no published data for the complex permittivity of Rilsan. The task for this project was to develop an accurate method to measure the complex permittivity of Rilsan to gain an understanding of the dielectric relaxations that occur within it. A fast, accurate method was developed using a vector network analyzer (VNA) and rectangular waveguide.

Posted in: Articles, Detectors, Waveguides, Research and development, Materials properties, Test equipment and instrumentation, Test procedures, Mining vehicles and equipment
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From VME to VPX

Sequestration, defense reform and cost constraints are driving a new paradigm in the defense industry, where leveraging existing technologies is no longer optional, but required. This is especially true as we migrate from VME to VPX-based embedded computing.

Posted in: Articles, Articles, Electronics & Computers, Embedded software, Cost analysis, Defense industry, Military aircraft, Military vehicles and equipment
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Optical Muzzle Flash Detection Sensors

An optical detector technology from Cal Sensors detects muzzle flash from over 100 meters away. Operating at the speed of light, optical flash detection systems provide an almost instantaneous response to a gunfire event. The realtime detection capabilities give the targets the critical seconds needed to duck and apply counter-measures.

Posted in: Application Briefs, Optics, Sensors and actuators, Surveillance, Military vehicles and equipment
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Line-of-Sight Radio

The U.S. Air Force has selected Cambium Networks’ pointto- point (PTP) 45600 High Capacity Line-of-Sight (HCLOS) radio for its Theater Deployable Communications program of record (TDC PMO). Supported by General Dynamics, TDC PMO will replace its legacy Radio Frequency Module (RFM) backhaul radio with Cambium’s PTP 45600 HCLOS technology, providing secure voice, video, and data functions for both deployable warfighters and first response missions.

Posted in: Application Briefs, Radio equipment, Telecommunications systems, Military vehicles and equipment, Rescue and emergency vehicles and equipment
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Thermal System Reduces Munitions Stockpiles

Harper International has been selected by U.S. Demil, LLC (USD) for the design of a continuous, indirect Rotary Thermal Treatment Unit (TTU). The equipment will support US Department of Defense efforts directed at reducing and recycling large stockpiles of excess, obsolete, and unserviceable munitions for safety and environmental purposes.

Posted in: Application Briefs, Defense, Recycling, Waste management, Product development, Suppliers, Industrial vehicles and equipment, Military vehicles and equipment
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Confocal Imaging System for Ultra-Fast, Three-Dimensional Transport Studies in Thermal Management Applications

The objective of this work was to develop a high-speed, three-dimensional (3D) confocal imaging system to study coupled fluidic and heat transport processes for high-performance thermal management applications. However, to successfully implement these approaches, fundamental understanding of interfacial dynamics and transport processes was necessary.

Posted in: Briefs, Physical Sciences, Imaging, Thermal management
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Evaluating a Data Clustering Approach for Lifecycle Facility Control

Given the current emphasis on sustainability, there is a growing interest in monitoring various facets of building resource consumption. Building monitoring and automation systems most commonly exist as closed-loop systems for security, fire safety, water, electrical, and HVAC (Heating, Ventilation, and Air-Conditioning). One of the fundamental requirements of a mature engineering process model is the comparison of planned versus actual results for cost, risk, and quality control. For facility engineering, this implies that there must be a structured specification of building space requirements and a mechanism for detecting divergent system and occupant behaviors. Such a mechanism would have broad applicability for commissioning, energy efficiency, sustainability, diagnostics, maintenance, and a variety of other problems.

Posted in: Briefs, Physical Sciences, Sustainable development, Cost analysis, Risk management, Total life cycle management, Quality control
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Portable Data Recorder for Measuring Sand Grain Fracture After Blasts

Abullet cannot penetrate through a sandbag while an arrow can, so understanding the behavior of granular materials such as sand and its energy absorption in a blast is critical in the design of armor. To this end, as part of the “Soil Blast Modeling and Simulations” project sponsored by the Office of Naval Research’s Multidisciplinary University Research Initiative (MURI), experiments were performed using a portable data recorder to determine the mechanical behavior of sand grains under confined compression.

Posted in: Briefs, Physical Sciences, Particulate matter (PM), Soils, Materials properties, Event data recorders, Military vehicles and equipment
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