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

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

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

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

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

Effect of Acceleration Frequency on Spatial Orientation Mechanisms

Extreme motion environments can induce loss of visual acuity, motion sickness, and spatial disorientation. Understanding how human sensory integration of acceleration stimuli affects spatial awareness will improve models of spatial disorientation and mishap analysis. While there are numerous studies describing vestibular semicircular canal responses to angular acceleration, less is known about vestibular otolith responses to linear acceleration. This gap in knowledge is important to resolve, since seasickness and airsickness are highly dependent on the predominant frequency of a linear acceleration stimulus.

Posted in: Briefs, Medical, Body regions, Human factors, Nervous system, Vehicle acceleration, Vehicle dynamics

Localization of Head-Mounted Vibrotactile Transducers

T he human sensory systems most frequently used in military displays (vision and audition) are sometimes overloaded. When soldiers rely on visual or auditory displays, their situation awareness can be degraded due to the need to attend to the display. A proposed alternative sensory channel for soldier displays is the tactile channel. In military applications, VT displays are primarily being used to aid in orientation, navigation, and communication. Tactile displays can also be used to impart more abstract information such as in command-and-control applications.

Posted in: Briefs, Physical Sciences, Displays, Vibration, Helmets, Military vehicles and equipment

MicroTCA Ecosystem

VadaTech (Henderson, NV) has released a complete ecosystem of boards and chassis in the MicroTCA architecture that is conduction-cooled. Designed for rugged applications, the products include air transport racks (ATR), MicroTCA carrier hubs (MCH), power modules, and advanced mezzanine cards. Compliant to MicroTCA.3 (Hardened Conduction-Cooled MicroTCA) specification, the boards and chassis come in various sizes and formats.

The MCH, which acts as a shelf controller, features a 400 MHz RISC CPU for high performance and low latency. The power modules provide true hot- swappability in a dual 10-36V input and outputs of up to 800W. They also have dual Intelligent Platform Management Interface (IPMI) and two banks of 256K flash for redundancy. Several of VadaTech’s advanced mezzanine cards (AMCs) are in the conduction-cooled format. The company is also able to modify standard AMCs to ruggedized versions with wedge locks.

Posted in: Products, Products, Electronics & Computers

XMC Controller/Adapter

Technobox, Inc. (West Berlin, NJ) has introduced a new SATA-based storage solution in its 6183 Dual CFast XMC Adapter. The 6183 accommodates two CFast devices – either the Type 1 or 2 – with one affixed to an on-board site and the other removable via the front panel port. Data movement between each CFast device and the internal 1X PCIe bus is controlled by a Silicon Image Sil3132 bridge. The bridge supports two SATA Gen2 interfaces at 3.0 GBytes/s.

On-board BIOS, loaded in flash memory, provides boot up configuration for the Sil3132. The bridge retrieves the stored configuration data via an I2C interface. Two LEDs on the front panel provide activity status for the front panel and onboard CFast cards. Another four LEDs on the card give an indication of activity for each device.

A retention mechanism is included to prevent accidental removal of the front panel device. The retainer also functions as an interlock for the 6183 hot swap feature. .

Posted in: Products, Products, Electronics & Computers

DDS Function Generator

Saelig Company, Inc. (Fairport, NY) has introduced the TG1006 - a DDS-based 1mHz to 10MHz function generator that, unlike other digital generators, can be operated over any frequency range using analog control in addition to numeric or spin-wheel frequency entry. The quasi-analog frequency control can rapidly sweep the frequency between preset limits, which is difficult to do with most digital function generators.

The TG1006 Function Generator can produce waveforms between 0.001Hz and 10MHz with a resolution of six digits, and with a one-year stability of better than 10ppm. Up to ten frequencies can also be stored in memory for preset test procedures. The output amplitude is variable between 5mV and 20V pk-pk from a source impedance of 50 ohms or 600 ohms. The LCD display shows frequency and amplitude or offset simultaneously. For accurate frequency selection, precise frequencies can be entered directly from the numeric keypad in Hz, kHz or MHz.

Posted in: Products, Products, Electronics & Computers