Special Coverage

Iodine-Compatible Hall Effect Thruster
Precision Assembly of Systems on Surfaces (PASS)
Development of a Novel Electrospinning System with Automated Positioning and Control Software
2016 Create The Future Design Contest Open For Entries
Clamshell Sampler
Shape Memory Alloy Rock Splitter
Deployable Extra-Vehicular Activity Platform (DEVAP) for Planetary Surfaces
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Converting High-Molecular-Weight Polymer Emulsions Into Dry Form

A company that supplies chemicals, including inverse emulsions that consist of a very high- molecular-weight, water-soluble polymer dispersed in a continuous oil phase, is seeking technologies that can convert these emulsions to powdered form without losing any of the polymer properties. Known technologies include spray-drying and precipitation. Precipitation processes are based upon the water and oil being soluble in some polar solvents, while the high-molecular- weight polymer is insoluble in these solvents. Respond to this TechNeed at: Email: nasatech@yet2.com Phone: 781-972-0600

Posted in: NASA Tech Needs

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Using RFID to Protect System Firmware

Breeching the security of safety- or security-intensive products such as auto parts, set top boxes, military electronics, or smart batteries can be a lucrative business that is well worth the nominal investment required to create lookalike packaging and labeling, or to change the system firmware to allow unpaid access to licensed content. Because the counterfeiter does not incur any of the costs associated with product development, he quickly covers his capital investment at the expense of the authentic product manufacturer or service provider.

Posted in: Articles, Articles

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Board Versus Box: The Age-Old DAQ Dilemma

Since the beginning of PC-based data acquisition and control in the 1980s, one question has remained a constant consideration for all who would specify a new DAQ system. Is this application better served by an external I/O “box” connected to the PC via some communications link, or an internal “board” system plugged into a slot within the computer? If anything, this question has become more complicated as technology has progressed.

Posted in: Articles, Articles

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Adopting Aerospace Development and Verification Standards for Software

An ever-increasing reliance on software control has meant that many companies from non-aerospace business sectors (automotive, nuclear power, MRI scanners, financial systems) that do not have a traditional requirement for sophisticated software development processes now find themselves compelled to undertake safety-critical and safety-related analysis and testing. With the need for increased software quality across different industries, a tendency has emerged for companies to look outside their own market sector for best practice approaches, techniques or standards. Examples of such industry crossover have been seen in the automotive and avionics industries with the adoption of elements of the DO-178B standard by the former and a similar adoption of the Motor Industry Software Reliability Association (MISRA) standards by the latter.

Posted in: Articles, Articles

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Seven Practical Steps for Designing Networking Enclosures

The design of enclosures to house networking servers and components should be guided by one overriding concern — heat. Servers, in particular, generate a great deal of heat, so an enclosure must be capable of dissipating that heat to ensure that the components deliver their expected life.

Posted in: Application Briefs, Application Briefs

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VME NAS RAID Blade

ACT/Technico (Warminster, PA) now offers the VME RAIDStor, a single-slot 6U network attached storage (NAS) blade that provides the same automatic, transparent data replication and re-sync of traditional box-level RAID storage modules in a more compact footprint. With network access for up to 18 slots (up to 1/2 terabyte per slot) in a 19" chassis, the SATA-based VME RAIDStor is suitable for use throughout many industries in a number of high availability, data intensive applications including message processing, network- centric military environments, redundant self-hosted Web servers or storage repositories, as well as transaction processing and logging.

Posted in: Products, Products

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Ultra-Wide Input DC-DC Converters

Aimtec (Montreal, Canada) has introduced the 2 watt AM2GW-NZ series of ultra wide input (4:1) DC-DC switching power supplies with operating temperature range of -40°C to + 85°C. Versatile, single and dual output modules are available in input ranges of 9-36V and 18-72V with I/O isolation of 1500VDC within a compact SIP9 package. With output currents of up to 500mA delivered to a regulated output voltage range of 3 to 15V, at high efficiency rates of up to 82%, the AM2GW-NZ series is ideally suited for portable power management applications, in addition to other telecom, microcontroller, DSPs industrial process systems, remote or battery backed systems, test/lab instrumentation, robotic systems and board level power distribution subsystems, datacom, and transportation equipment applications where loosely regulated input voltages are present.

Posted in: Products, Products

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