Application Briefs: Electronics & Computers
Although a few industrial backplane architectures are already geared for rugged Mil/Aero applications, some design considerations are often required when designing rugged COTS products.
...
Articles: Electronics & Computers
While industrial applications typically require high levels of reliability, availability, ruggedness, and longevity, there often is a set of unique system requirements dependent...
Application Briefs: Sensors/Data Acquisition
Formation, Inc.
Moorestown, NJ
856-234-5020
www.formation.com
Formation’s ToughDisk® 3500 SATA Rugged...
Articles: Motion Control
The trend in aircraft design is toward more efficient brushless DC motors. A integrated motor drive module for brushless DC motors from International Rectifier (El Segundo, CA) reduces the effort...
Briefs: Materials
Hybrid Wound Filaments for Greater Resistance to Impacts
The immediately preceding article includes an example in which a composite overwrap on a pressure vessel contains wound filaments made of a hybrid of high-strength carbon fibers and poly(phenylene benzobisoxazole) [PBO] fibers. This hybrid material is chosen in an effort to increase the...
Briefs: Physical Sciences
Solid-state electrochemical sensors for measuring the degrees of acidity or alkalinity (in terms of pH values) of liquid solutions are being developed. These sensors are intended to...
Application Briefs: Electronics & Computers
Conventional hard disk drives (HDDs) are designed to reliably operate in the hospitable physical surroundings of interior deployments, which are typically characterized by mild...
Application Briefs: Electronics & Computers
As the cost of micro-disk and NAND Flash continue to drop, devices are storing more and more data. It is common now for a person's MP3 player to have more storage than their laptop. But this increase in...
Briefs: Software
JMS Proxy and C/C++ Client SDK
JMS Proxy and C/C++ Client SDK ("JMS" signifies "Java messaging service" and "SDK" signifies "software development kit") is a software package for developing interfaces that enable legacy programs (here denoted "clients") written in the C and C++ languages to communicate with each other via a JMS broker. This...
Briefs: Mechanical & Fluid Systems
Graphite Composite Booms With Integral Hinges
A document discusses lightweight instrument booms under development for use aboard spacecraft. A boom of this type comprises a thin-walled graphite-fiber/matrix composite tube with an integral hinge that can be bent for stowage and later allowed to spring back to straighten the boom for deployment in...
Briefs: Electronics & Computers
A scheme for stabilizing the frequency of a microwave signal is proposed that exploits the operational characteristics of a coupled optoelectronic oscillator (COEO) and related...
Briefs: Photonics/Optics
A scheme for stabilizing the frequency of a microwave signal is proposed that exploits the operational characteristics of a coupled optoelectronic oscillator (COEO) and related...
Briefs: Mechanical & Fluid Systems
A rugged iris mechanism has been designed to satisfy several special requirements, including a wide aperture in the “open” position, full obscuration in the “closed” position, ability to function in a cryogenic...
Briefs: Materials
Low-Density, Aerogel-Filled Thermal- Insulation Tiles
Aerogel fillings have been investigated in a continuing effort to develop low-density thermal-insulation tiles that, relative to prior such tiles, have greater dimensional stability (especially less shrinkage), equal or lower thermal conductivity, and greater strength and durability. In...
Briefs: Electronics & Computers
Historically, the price of non-commercial hardware has been astronomical due to the engineering required for it to perform specific functions and to operate reliably in harsh conditions, with...
Briefs: Materials
Formulations for Stronger Solid Oxide Fuel-Cell Electrolytes
Tests have shown that modification of chemical compositions can increase the strengths and fracture toughnesses of solid oxide fuel-cell (SOFC) electrolytes. Heretofore, these solid electrolytes have been made of yttria- stabilized zirconia, which is highly conductive for oxygen ions...
Briefs: Information Technology
Artifacts that are fabricated with the help of molecular-beam epitaxy (MBE) are undergoing development for use as dimensional calibration standards with sub-micron widths. Such...
Briefs: Mechanical & Fluid Systems
An instrument is undergoing development for use in measuring both the horizontal direction and the horizontal speed of wind in the speed range from 60 to 300 mph (about 27 to 134 m/s) at a rate of at...
Briefs: Physical Sciences
An instrument that measures the characteristic lifetime of fluorescence of chlorophyll has been invented for in situ, real-time oceanographic studies of photosynthesis in...
Briefs: Photonics/Optics
The figure shows a first-phase prototype of a miniature, rugged long-wavelength infrared (LWIR) spectrometer that incorporates recent advances in the design and fabrication of microelectronic and...
Briefs: Motion Control
Spectrol has produced an innovative design for a three-terminal voltage output device that integrates a Hall-effect sensor and a patented magnetic circuit to convert radial...
Briefs: Mechanical & Fluid Systems
NASA's F-15B #836 is a two-seat version of the F-15, which is a high-performance, supersonic, all-weather fighter airplane. The F-15B is used as a test-bed aircraft for a wide variety of...
Briefs: Materials
Polymeric Composite Damage Protective Overwraps for Composite Pressure Vessels
Damage-tolerant polymeric composite overwraps have been proposed for lightweight pressure vessels that are made of composites of graphite fibers in polymeric matrices. Graphite-fiber/polymer composites are vulnerable to impact damage; overwraps on the pressure...
Briefs: Electronics & Computers
Prolonging the Lives of Rechargeable Lithium-Ion Cells
Several modifications of the design and operation of lithium-ion rechargeable electrochemical cells have been proposed to prolong the cycle lives of the cells. As explained below, overdischarge can result in dissolution of a metal current collector in the anode of a cell, with consequent...
Briefs: Mechanical & Fluid Systems
Multifinger electroactive-polymer grippers (MEPGs) are simple, compact, lightweight robotic end effectors with fingers that bend and function similarly to human fingers. The fingers are made...
Briefs: Materials
Improved concrete structural members such as columns, piers, and piles can be manufactured by incorporating fiber-reinforced-plastic (FRP) exterior shells and FRP interior submembers. The...
Briefs: Mechanical & Fluid Systems
There has been some success in continuing efforts to increase the service lifetimes of the guide rolls in hot-roll-slitter machines in the steel industry. In these machines, hardened knives are...
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